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Carbene dual-function bridging of Ag-Cu sites enables*CO pooling for*COCHO coupling with>80%C2+selectivity in CO2 electroreduction 认领 引用
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作者 Haoyu Zhang Lujie Jin +6 位作者 Tanghong Zheng Xinran Qiu Yang Liu Dongyun Chen Qingfeng Xu Youyong Li Jianmei Lu 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第3期105-114,共10页
The electrocatalytic CO2 reduction reaction(CO2RR)offers a promising sustainable route for producing high-value C2+chemicals and fuels by using renewable electricity.However,boosting C2+product yields has ... The electrocatalytic CO2 reduction reaction(CO2RR)offers a promising sustainable route for producing high-value C2+chemicals and fuels by using renewable electricity.However,boosting C2+product yields has been significantly hindered by insufficient*CO intermediate generation in confined spaces and limited activity of sites for subsequent hydrogenation and C-C coupling processes.Herein,we introduce an efficient strategy that involves carbene dual-function bridging of Ag-Cu sites to enable*CO pooling and facilitate*COCHO coupling.As a result,a remarkable C2+Faradaic efficiency of 80.3%at 400 mA cm-2 was achieved.In-situ surface-enhanced Raman spectroscopy,in-situ attenuated total reflection surface-enhanced infrared absorption spectroscopy,and density functional theory calculations collectively uncover the underlying mechanism.Carbene facilitates CO spillover from Ag to Cu sites,modulates the electronic structure of Cu,stabilizes CO intermediates,and reduces the energy barrier for CO hydrogenation.These effects synergistically enhance C-C coupling,thereby improving the Faradaic efficiency for C2+product formation. 展开更多
关键词 Carbon dioxide C2+products Electrolysis Carbene modification Dual-function bridging
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Joint resource and trajectory optimization in a UAV-enabled dual-function radar-communication network 认领 引用
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作者 Haowei Zhang Weijian Liu +3 位作者 Lin Zhang Youwei Meng Tao Song HeXiu Xu 《Defence Technology（防务技术）》 SCIE EI CAS CSCD 2026年第6期30-49,共20页
The resource and trajectory optimization problem is critical in joint radar and communication systems,as it mitigates spectrum interference and enhances resource utilization.This paper proposes a joint power and subch... The resource and trajectory optimization problem is critical in joint radar and communication systems,as it mitigates spectrum interference and enhances resource utilization.This paper proposes a joint power and subchannel allocation with trajectory optimization(JPSATO)strategy for a dual-function radar-communication network that tracks multiple targets while serving multiple users.The predicted-conditional Cram er-Rao lower bound(PC-CRLB)in the clutter domain is derived as the tracking performance metric,quantifying the accuracy loss caused by clutter.The optimization model is formulated as minimizing the sum of weighted PC-CRLBs of multiple targets while adhering to the communication data ratio constraint of each user.It is shown that the continuous power allocation,trajectory optimization,and binary subchannel allocation variables are all coupled in the objective function and constraints,resulting in a mixed integer programming problem.In addition,an information reduction factor is embedded in the PC-CRLB to express the clutter effects,and it destroys the convexity of objective function with respect to the power allocation.A four-layer alternating optimization-based method(FLAOM)is designed for this problem-solving.The radar power allocation and communication power allocation are solved using the sequential optimization method,where the nonconvex sub-problem is transformed into a near convex one in each iteration using the first-order Taylor expansion.Then,the subchannel allocation is solved using a greedy search idea.Finally,the trajectory is optimized by the reformulation and the sequential optimization method.Simulation results confirm the effectiveness and efficiency of proposed FLAOM compared with the state-of-the-art methods.It is also shown that the trajectory optimization plays important roles in the considered JPSATO problem. 展开更多
关键词 Dual-function radar-communication Unmanned aerial vehicles Resource allocation Nonconvex optimization
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ACQ-FRET dual-functional near-infrared fluorescent probes for the bioimaging of nanocarriers 认领 引用
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作者 Chang Liu Runtong Zhang +4 位作者 Yi Lu Zongguang Tai Quangang Zhu Zhongjian Chen Wei Wu 《Asian Journal of Pharmaceutical Sciences》 SCIE CAS CSCD 2026年第2期108-122,共15页
Forster resonance energy transfer(FRET)and aggregation-caused quenching(ACQ)are well-established mechanisms with promising potential to eliminate interference from free probes in studies of in vivo nanocarrier behavio... Forster resonance energy transfer(FRET)and aggregation-caused quenching(ACQ)are well-established mechanisms with promising potential to eliminate interference from free probes in studies of in vivo nanocarrier behavior.However,both approaches have a critical limitation,fluorescence reillumination.This problem arises when aggregates of quenched ACQ probe redisperse,or separated FRET probe pairs recouple,after repartitioning and enrichment in hydrophobic domains,leading to significant interference.To minimize reillumination,our study employs an“And”logic-gate strategy,integrating ACQ and FRET principles.We screened a series of near-infrared(NIR)fluorophores based on the BODIPY parent structures to identify an optimized ACQ-FRET dual-functional probe pair,where BDP1 was chosen as the donor and P1 as the acceptor.Compared to the individual donor(BDP1)or acceptor(P1),the ACQ-FRET probe pair dramatically reduced reilluminationderived interference in both plasma and cell line assays.Subsequent in vivo and ex vivo bioimaging confirmed the superior performance of the ACQ-FRET probe,which consistently exhibited the lowest reillumination interference(below 15%)among all tested probes.This performance significantly outperformed that of BDP1(32%)and P1(47%),and even exceeded P2(19%),a well-established NIR probe characterized by relatively low reillumination. 展开更多
关键词 Forster resonance energy transfer Aggregation-caused quenching Dual-functional Near-infrared Nanocarriers In vivo fate
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Recent Advances in Dual-Functional Metal Sulfide-Based Composites for Photocatalytic H2Production Integrated with Selective Organic Oxidation Reactions 认领 引用
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作者 Ikram Ullah Chonghui Yang +6 位作者 Risheng Duan Shuai Chen Jing-Han Li Muhammad Amin Pei Zhao Ning Qin An-Wu Xu 《Precision Chemistry》 CAS CSCD 2026年第2期107-124,共18页
Photocatalytic hydrogen(H2)evolution integrated with selective oxidation offers a prominent pathway for sustainable energy production and high-value chemical production.Metal sulfide-based photocatalysts(named MSP)... Photocatalytic hydrogen(H2)evolution integrated with selective oxidation offers a prominent pathway for sustainable energy production and high-value chemical production.Metal sulfide-based photocatalysts(named MSP)have gained attention due to their appropriate band alignments,strong light absorption,and adjustable surface characteristics.This review systematically summarizes recent advances in MSP design for coupled H2production and selective oxidation of representative organic molecules,including benzyl alcohol(BA),furfural alcohol(FFA),5-hydroxymethylfurfural(HMF),benzylamine(BAm),and lactic acid(LA).Particularly,we highlight their photocatalytic performance and charge transfer mechanisms.Finally,this review presents current challenges and future strategies for designing efficient and industrially feasible photocatalytic systems. 展开更多
关键词 MSP dual-functional photocatalysis H2 production organic oxidation charge carrier mechanism
S-scheme heterojunctions of metal-doped ZnIn2S4/TpPa-1:Regulating H adsorption/desorption and internal electric field for boosted dual-functional photocatalysis 认领 引用
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作者 Shaodan Wang Heng Yang +3 位作者 Lijun Xue Jianjun Zhang Shuxin Ouyang Lili Wen 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第1期159-173,共15页
Cooperative coupling of photocatalytic hydrogen generation with oxidative organic synthesis is promising in simultaneously producing sustainable energy and value-added chemicals.However,the photocatalytic activity is ... Cooperative coupling of photocatalytic hydrogen generation with oxidative organic synthesis is promising in simultaneously producing sustainable energy and value-added chemicals.However,the photocatalytic activity is constrained by restricted redox potentials and insufficient photocarrier separation and transfer.Herein,we construct S-scheme heterojunctions based on metal-doped ZnIn2S4 and covalent organic frameworks,denoted as M-ZIS/TpPa-1(M=Ni or Mo).Theoretical calculations demonstrated that Mo-ZIS possess optimum H adsorption Gibbs free energies,deeper downshift of sulfur p-band center and higher integrated crystal orbital Hamilton population(ICOHP)value than Ni-ZIS and ZIS to optimize H adsorption/desorption dynamics.Besides,metal-doping reasonably enhanced the interfacial charge transfer in heterostructures,identifying the enlarged internal electric field(IEF)in Mo-ZIS/TpPa-1 than Ni-ZIS/TpPa-1 and ZIS/TpPa-1.Moreover,experimental explorations of photoelectrochemical measurements,femtosecond transient absorption spectroscopy,in-situ irradiated X-ray photoelectron spectroscopy and electron paramagnetic resonance verified the facilitated photocarrier separation and migration in metal-doped S-scheme heterojunctions.Ultimately,Mo0.01-ZIS/TpPa-1 exhibited visible-light driven H2 evolution rate of 1648μmol g-1 h-1 and N-benzylidenebenzylamine formation rate of 1812μmol g-1 h-1,better than Ni0.048-ZIS/TpPa-1,and superior to parent ZIS/TpPa-1.This work might provide insights into the modulation of H adsorption/desorption behavior and IEF within S-scheme heterostructures via rational metal-doping strategy for efficient dual-functional photocatalysis. 展开更多
关键词 Covalent organic frameworks Metal-doped ZnIn2S4 S-scheme heterojunction H adsorption/desorption Internal electric field Dual-functional photocatalysis
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A dual-functional capsule robot for drug delivery and tissue biopsy based on magnetic torsion spring technology 认领 引用 被引量：4
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作者 Qing Cao Yue Pan +5 位作者 Yangqianhui Zhang Yuning Jiang Guofang Gong Huayong Yang Fuzhou Niu Dong Han 《Bio-Design and Manufacturing》 SCIE EI CAS CSCD 2025年第3期495-510,I0062,共16页
Wireless capsule endoscopy(WCE)has the potential to fully replace conventional wired counterparts for its low invasiveness.Recent studies have attempted to expand the functions of capsules toward this goal.However,lim... Wireless capsule endoscopy(WCE)has the potential to fully replace conventional wired counterparts for its low invasiveness.Recent studies have attempted to expand the functions of capsules toward this goal.However,limitations in space and energy supply have resulted in the inability to perform multiple diagnostic and treatment tasks using a single capsule.In this study,we developed a dual-functional capsule robot(DFCR)for drug delivery and tissue biopsy based on magnetic torsion spring technology.The delivery module was shown to rotate the push rod with a thrust of 894 mN to release approximately 0.3 mL of semisolid drug.The biopsy module used a built-in blade to cut tissue with a shear stress of 22.87 MPa,producing a sample of approximately 1.8 mm3.Additionally,a five-degree-of-freedom permanent magnet drive system was developed.By adjusting the strength of the unidirectional magnetic field generated by an external magnet,the capsule can be wirelessly controlled to sequentially trigger the two functions.Ex vivo tests on porcine stomachs confirmed the feasibility of the prototype capsule(12 mm in diameter and 45 mm in length)in active movement,medication,and tissue biopsy.The newly developed DFCR further expands the clinical application prospects of WCE robots in minimally invasive surgery. 展开更多
关键词 Wireless capsule endoscopy(WCE) Dual-functional capsule robot(DFCR) Magnetic torsion spring(MTS) Drug delivery Tissue biopsy Permanent magnet
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Very low Ru loadings boosting performance of Ni-based dual-function materials during the integrated CO2capture and methanation process 认领 引用 被引量：2
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作者 Anastasios I.Tsiotsias Eleana Harkou +8 位作者 Nikolaos D.Charisiou Victor Sebastian Dhanaji R.Naikwadi Bart van der Linden Atul Bansode Dragos Stoian George Manos Achilleas Constantinou Maria A.Goula 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第3期309-328,共20页
Herein,the effect of the Ru:Ni bimetallic composition in dual-function materials(DFMs)for the integrated CO2capture and methanation process(ICCU-Methanation)is systematically evaluated and combined with a thorough ... Herein,the effect of the Ru:Ni bimetallic composition in dual-function materials(DFMs)for the integrated CO2capture and methanation process(ICCU-Methanation)is systematically evaluated and combined with a thorough material characterization,as well as a mechanistic(in-situ diffuse reflectance infrared fourier-transform spectroscopy(in-situ DRIFTS))and computational(computational fluid dynamics(CFD)modelling)investigation,in order to improve the performance of Ni-based DFMs.The bimetallic DFMs are comprised of a main Ni active metallic phase(20 wt%)and are modified with low Ru loadings in the 0.1-1 wt%range(to keep the material cost low),supported on Na2O/Al2O3.It is shown that the addition of even a very low Ru loading(0.1-0.2 wt%)can drastically improve the material reducibility,exposing a significantly higher amount of surface-active metallic sites,with Ru being highly dispersed over the support and the Ni phase,while also forming some small Ru particles.This manifests in a significant enhancement in the CH4yield and the CH4production kinetics during ICCU-Methanation(which mainly proceeds via formate intermediates),with 0.2 wt%Ru addition leading to the best results.This bimetallic DFM also shows high stability and a relatively good performance under an oxidizing CO2capture atmosphere.The formation rate of CH4during hydrogenation is then further validated via CFD modelling and the developed model is subsequently applied in the prediction of the effect of other parameters,including the inlet H2concentration,inlet flow rate,dual-fu nction material weight,and reactor internal diameter. 展开更多
关键词 Dual-function materials Integrated CO2capture and methanation Bimetallic materials Nickel-ruthenium Reducibility in-situ DRIFTS CFD modelling
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Performance optimization and parameters estimation for MIMO-OFDM dual-functional communication-radar systems 认领 引用 被引量：3
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作者 Chen Zhong Mengting Lou +2 位作者 Chunrong Gu Lan Tang Yechao Bai 《Digital Communications and Networks》 SCIE EI CSCD 2025年第2期387-400,共14页
Dual-function communication radar systems use common Radio Frequency(RF)signals are used for both communication and detection.For better compatibility with existing communication systems,we adopt Multiple-Input Multip... Dual-function communication radar systems use common Radio Frequency(RF)signals are used for both communication and detection.For better compatibility with existing communication systems,we adopt Multiple-Input Multiple-Output(MIMO)Orthogonal Frequency Division Multiplexing(OFDM)signals as integrated signals and investigate the estimation performance of MIMO-OFDM signals.First,we analyze the Cramer-Rao Lower Bound(CRLB)of parameter estimation.Then,the transmit powers over different subcarriers are optimized to achieve the best tradeoff between the transmission rate and the estimation performance.Finally,we propose a more accurate estimation method that uses Canonical Polyadic Decomposition(CPD)of the third-order tensor to obtain the parameter matrices.Due to the characteristic of the column structure of the parameter matrices,we only need to use DFT/IDFT to recover the parameters of multiple targets.The simulation results show that tensor-based estimation method can achieve a performance close to CRLB,and the estimation performance can be improved by optimizing the transmit powers. 展开更多
关键词 Bistatic dual-function communication-radar systems MIMO-OFDM CRLB Power allocation CPD
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Synergistic hydrogen production and organic pollutant removal via dual-functional photocatalytic systems 认领 引用 被引量：1
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作者 Bin Han Xiangcheng Shan +7 位作者 Hui Xue Fuyu Liu Xiaoyang Song Jiarui Kong Qiupei Lei Yingjun Wang Dongling Ma Qingzhe Zhang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2025年第7期202-216,共15页
Photocatalytic water splitting is a promising way to produce H2,a green and clean energy source.However,efficient H2 production typically relies on the addition of electron donors,such as alcohols and acids,whic... Photocatalytic water splitting is a promising way to produce H2,a green and clean energy source.However,efficient H2 production typically relies on the addition of electron donors,such as alcohols and acids,which are neither environmentally friendly nor cost-effective.Recently,we have witnessed a surge of studies in coupling photocatalytic H2 evolution with organic pollutant oxidation,which significantly promotes charge separation and improves the overall photocatalytic efficiency.It is thus an opportune time to critically assess the recent literature concerning dual-functional photocatalytic systems and provide perspectives for its future development.In this minireview,we begin with the working principles and requirements for synergistic photocatalytic systems.We then summarize and critically discuss the recent advances in photocatalytic H2 production and the degradation of various organic pollutants,including antibiotics,dyes,and phenols.Finally,we discuss the current challenges and suggest future directions for this field. 展开更多
关键词 Dual-functional photocatalysis Pollutant removal Water remediation H2evolution Clean energy
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Nd@g-C3N4dual-functional photosynthesis and antitumor activities of 3-fluoroalkylated quinoxalin-2(1H)-ones 认领 引用 被引量：1
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作者 Qiong-Hui Peng Ning-Bo Li +6 位作者 Jia-Cheng Hou Cai-Jun He Ya-Xin Yang Chun-Lin Zhuang Li-Juan Ou Mei Yuan Wei-Min He 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第12期199-203,共5页
Herein,the Nd@g-C3N4 dual-functional photocatalysis enabled fluoroalkylative heteroarylation of alkenes with RfSO2Cl under visible-light and ultrasound conditions was firstly reported.The photogenerated el... Herein,the Nd@g-C3N4 dual-functional photocatalysis enabled fluoroalkylative heteroarylation of alkenes with RfSO2Cl under visible-light and ultrasound conditions was firstly reported.The photogenerated electron-driven reductive production of fluoroalkyl radical paired with photogenerated hole-driven oxidative production of chloride radical resulted in the full utilization of photogenerated carrier for bond formation.A wide range of N-heteroarenes,alkenes and RfSO2Cl,were well compatible for this reaction to access valuable fluoroalkylated N-heteroarenes with diverse structural features.The antitumor potential of synthesized fluoroalkylated N-heterocycles against Glioma 261 cells was evaluated by CCK8 assay.Notably,compound 4 aka demonstrated remarkable efficacy,exhibiting approximately sevenfold greater potency than temozolomide,a widely used chemotherapeutic agent. 展开更多
关键词 Dual-functional photocatalysis Dual role Quinoxalin-2(1H)-one Fluoroalkylatione Photogenerated carrier
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Control of dual-function amphiphilic biochar-MoO3-xcatalysts with abundant oxygen vacancies for efficient extractant-free oxidative desulfurization 认领 引用
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作者 Xue Liang Tian-Jing Zhang +6 位作者 Hong-Xia Yu Jie Hong Mohamed Abbas Claudia Li Sibudjing Kawi Wan-Liang Yang Mei-Song Xu 《Petroleum Science》 SCIE EI CAS CSCD 2025年第5期2215-2232,共18页
The development of an efficient dual-function catalytic-sorption system,which seamlessly integrates reaction and separation into a single step for extractant-free systems,represents a transformative advancement in oxi... The development of an efficient dual-function catalytic-sorption system,which seamlessly integrates reaction and separation into a single step for extractant-free systems,represents a transformative advancement in oxidative desulfurization(ODS)process.In this work,we introduce a novel dualfunction amphiphilic biochar(Mo/CBC)catalyst,functionalized with MoO3-xfeaturing abundant oxygen vacancies,for highly effective extractant-free ODS.The polarity of the biochar was precisely tailored by varying the amount of KOH,leading to the creation of amphiphilic carriers.Subsequent ball milling facilitated the successful loading of MoO3-xonto the biochar surface via an impregnation-calcination route leveraging carbon reduction,resulting in the synthesis of amphiphilic Mo/CBC catalysts.The amphiphilic nature of these catalysts ensures their stable dispersion within the oil phase,while also facilitating their interaction with the oxidant H2O2 and the adsorption of sulfur-containing oxidation products.Characterization techniques,including EPR,XPS,and in situ XRD,verified the existence of abundant oxygen vacancies obtained by carbon reduction on the amphiphilic Mo/CBC catalysts,which significantly boosted their activity in an extractant-free ODs system.Remarkably,the amphiphilic Mo/CBC catalyst displayed exceptional catalytic performance,achieving a desulfurization efficiency of 99.6%in just 10 min without extraction solvent.DFT theoretical calculations further revealed that H2O2readily dissociates into two OH radicals on the Ovac-MoO3,overcoming a low energy barrier.This process was identified as a key contributor to the catalyst's outstanding ODS performance.Furthermore,other biochar sources,such as rice straw,bamboo,rapeseed oil cake,and walnut oil cake,were investigated to produce Mo-based amphiphilic biochar catalysts,which all showed excellent desulfurization performance.This work establishes a versatile and highly efficient dual-function catalytic-sorption system by designing amphiphilic biochar catalysts enriched with oxygen vacancies,paving the way for the development of universally applicable ODS catalysts for industrial applications. 展开更多
关键词 Amphiphilic biochar catalyst Dual-function MoO3-x Oxygen vacancy Oxidative desulfurization Extractant-free
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Reconfigurable intelligent surface-aided dual-function radar and communication systems with MU-MIMO communication 认领 引用
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作者 Yasheng Jin Hong Ren +6 位作者 Cunhua Pan Zhiyuan Yu Ruisong Weng Boshi Wang Gui Zhou Yongchao He Maged Elkashlan 《Digital Communications and Networks》 SCIE EI CSCD 2025年第6期1831-1842,共12页
In this paper,we investigate an reconfigurable intelligent surface-aided Integrated Sensing And Communication(ISAC)system.Our objective is to maximize the achievable sum rate of the multi-antenna communication users t... In this paper,we investigate an reconfigurable intelligent surface-aided Integrated Sensing And Communication(ISAC)system.Our objective is to maximize the achievable sum rate of the multi-antenna communication users through the joint active and passive beamforming.Specifically,the weighted minimum mean-square error method is first used to reformulate the original problem into an equivalent one.Then,we utilize an alternating optimization algorithm to decouple the optimization variables and decompose this challenging problem into two subproblems.Given reflecting coefficients,a penalty-based algorithm is utilized to deal with the non-convex radar Signal-to-Noise Ratio(SNR)constraints.For the given beamforming matrix of the base station,we apply majorization-minimization to transform the problem into a Quadratic Constraint Quadratic Programming(QCQP)problem,which is ultimately solved using a Semi-Definite Relaxation(SDR)based algorithm.Simulation results illustrate the advantage of deploying reconfigurable intelligent surface in the considered multi-user MultipleInput Multiple-Output(MIMO)ISAC systems. 展开更多
关键词 Integrated sensing and communication Reconfigurable intelligent surface Dual-function radar-communication
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In vitro and in silico analysis of dual-function peptides derived from casein hydrolysate 认领 引用 被引量：10
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作者 Maolin Tu Xinyu Qiao +4 位作者 Cong Wang Hanxiong Liu Shuzhen Cheng Zhe Xu Ming Du 《Food Science and Human Wellness》 SCIE CAS CSCD 2021年第1期32-37,共6页
There is no study on food-derived peptide with both anticoagulant and angiotensin I-converting enzyme inhibitory (ACEI) activities yet. In this work, the anticoagulant and ACEI activities of the casein hydrolysates re... There is no study on food-derived peptide with both anticoagulant and angiotensin I-converting enzyme inhibitory (ACEI) activities yet. In this work, the anticoagulant and ACEI activities of the casein hydrolysates released by pepsin digestion were evaluated for the first time to the best of our knowledge. Results indicated that the casein hydrolysate exhibited potent anticoagulant activity by prolonging the thrombin time (TT) and the activated partial thromboplastin time (APTT). Compared with control samples, at 10 mg/mL, the TT and APTT of casein hydrolysate were 186.0 % ± 6.6 % and 163.5 % ± 7.4 %, respectively. The casein hydrolysate also showed a strong ACEI activity with an IC50 value of 1.775 mg/mL. The components of the bioactive casein hydrolysate were analyzed by nanoscale liquid chromatography quadrupole time-of-flight tandem mass spectrometry (NanoLC-Q-TOF-MS/MS). Total of 115 peptides were identified, among which 34, 9, 55 and 17 peptides were derived from αs1-, αs2-, β-, and κ-casein, respectively. The results of PeptideRanker and PepSite 2 analysis showed that 6 peptides (FRQFYQL, NENLLRF, NPWDQVKR, PVVVPPFLQ, PVRGPFPIIV, and ARHPHPHLSF) have both ACEI and anticoagulant activities by binding to the active sites of ACE and thrombin. This study indicated that casein is a potential functional food supplement that can be used for medical purposes. 展开更多
关键词 Casein Anticoagulant ACE inhibitory Dual-function NanoLC-Q-TOF-MS/MS
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A hydrophilic poly(methyl vinyl ether-alt-maleic acid) polymer as a green, universal, and dual-functional binder for high-performance silicon anode and sulfur cathode 认领 引用 被引量：10
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作者 Hao Chen Zhenzhen Wu +4 位作者 Zhong Su Luke Hencz Su Chen Cheng Yan Shanqing Zhang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第11期127-135,I0003,共9页
Binders could play crucial or even decisive roles in the fabrication of low-cost, stable and high-capacity electrodes. This is especially the case for the silicon (Si) anodes and sulfur (S) cathodes that undergo large... Binders could play crucial or even decisive roles in the fabrication of low-cost, stable and high-capacity electrodes. This is especially the case for the silicon (Si) anodes and sulfur (S) cathodes that undergo large volume change and active material loss in lithium-ion batteries during prolonged cycles. Herein, a hydrophilic polymer poly(methyl vinyl ether-alt-maleic acid) (PMVEMA) was explored as a dual-functional aqueous binder for the preparation of high-performance silicon anode and sulfur cathode. Benefiting from the dual functions of PMVEMA, i.e., the excellent dispersion ability and strong binding forces, the as-prepared electrodes exhibit improved capacity, rate capability and long-term cycling performance. In particular, the as-prepared Si electrode delivers a high initial discharge capacity of 1346.5 mAh g−1 at a high rate of 8.4 A/g and maintains 834.5 mAh g−1 after 300 cycles at 4.2 A/g, while the as-prepared S cathode exhibits enhanced cycling performance with high remaining discharge capacities of 663.4 mAh g−1 after 100 cycles at 0.2 C and 487.07 mAh g−1 after 300 cycles at 1 C, respectively. These encouraging results suggest that PMVEMA could be a universal binder to facilitate the green manufacture of both anode and cathode for high-capacity energy storage systems. 展开更多
关键词 Dual-functional Aqueous binder Silicon anode Sulfur cathode Lithium-ion batteries Lithium-sulfur batteries
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Dual-Functional Lithiophilic/Sulfiphilic Binary-Metal Selenide Quantum Dots Toward High-Performance Li-S Full Batteries 认领 引用 被引量：13
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作者 Youzhang Huang Liang Lin +6 位作者 Yinggan Zhang Lie Liu Baisheng Sa Jie Lin Laisen Wang Dong-Liang Peng Qingshui Xie 《Nano-Micro Letters》 SCIE EI CAS CSCD 2023年第5期169-186,共18页
The commercial viability of lithium-sulfur batteries is still challenged by the notorious lithium polysulfides(Li PSs)shuttle effect on the sulfur cathode and uncontrollable Li dendrites growth on the Li anode.Herein,... The commercial viability of lithium-sulfur batteries is still challenged by the notorious lithium polysulfides(Li PSs)shuttle effect on the sulfur cathode and uncontrollable Li dendrites growth on the Li anode.Herein,a bi-service host with Co-Fe binary-metal selenide quantum dots embedded in three-dimensional inverse opal structured nitrogen-doped carbon skeleton(3DIO FCSe-QDs@NC)is elaborately designed for both sulfur cathode and Li metal anode.The highly dispersed FCSe-QDs with superb adsorptive-catalytic properties can effectively immobilize the soluble Li PSs and improve diffusion-conversion kinetics to mitigate the polysulfide-shutting behaviors.Simultaneously,the 3D-ordered porous networks integrated with abundant lithophilic sites can accomplish uniform Li deposition and homogeneous Li-ion flux for suppressing the growth of dendrites.Taking advantage of these merits,the assembled Li-S full batteries with 3DIO FCSe-QDs@NC host exhibit excellent rate performance and stable cycling ability(a low decay rate of 0.014%over 2,000 cycles at 2C).Remarkably,a promising areal capacity of 8.41 mAh cm-2can be achieved at the sulfur loading up to 8.50 mg cm-2with an ultra-low electrolyte/sulfur ratio of 4.1μL mg-1.This work paves the bi-serve host design from systematic experimental and theoretical analysis,which provides a viable avenue to solve the challenges of both sulfur and Li electrodes for practical Li-S full batteries. 展开更多
关键词 Dual-functional host Fe2CoSe4quantum dots Shuttle effect Dendrite-free Li anode Li-S full batteries
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Rational design of MoS2 nanosheets decorated on mesoporous hollow carbon spheres as a dual-functional accelerator in sulfur cathode for advanced pouch-type Li–S batteries 认领 引用 被引量：10
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作者 Qinjun Shao Pengfei Lu +4 位作者 Lei Xu Decai Guo Jing Gao Zhong Shuai Wu jian Chen 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2020年第12期262-271,共10页
Developing sulfur cathodes with high catalytic activity on accelerating the sluggish redox kinetics of lithium polysulfides(Li PSs) and unveiling their mechanisms are pivotal for advanced lithium–sulfur(Li–S)batteri... Developing sulfur cathodes with high catalytic activity on accelerating the sluggish redox kinetics of lithium polysulfides(Li PSs) and unveiling their mechanisms are pivotal for advanced lithium–sulfur(Li–S)batteries. Herein, MoS2 is verified to reduce the Gibbs free energy for rate-limiting step of sulfur reduction and the dissociation energy of lithium sulfide(Li2 S) for the first time employing theoretical calculations. The Mo S2 nanosheets coated on mesoporous hollow carbon spheres(MHCS) are then reasonably designed as a sulfur host for high-capacity and long-life Li–S battery, in which MHCS can guarantee the high sulfur loading and fast electron/ion transfer. It is revealed that the shuttle effect is efficiently inhibited because of the boosted conversion of Li PSs. As a result, the coin cell based on the MHCS@Mo S2-S cathode exhibits stable cycling performance maintaining 735.7 mAh g-1 after 500 cycles at 1.0 C. More importantly, the pouch cell employing the MHCS@Mo S2-S cathodes achieves high specific capacity of1353.2 m Ah g-1 and prominent cycle stability that remaining 960.0 m Ah g-1 with extraordinary capacity retention of 79.8% at 0.1 C after 170 cycles. Therefore, this work paves a new avenue for developing practical high specific energy and long-life pouch-type Li–S batteries. 展开更多
关键词 Lithium sulfur batteries MoS2 Dual-functional accelerator Pouch cell
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High efficiency photothermal cyclic self-healing antibacterial coating based on in-situ dual-functional BiOI@Bi2S3 认领 引用 被引量：8
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作者 Huimeng Feng Tong Wang +3 位作者 Wei Wang Chengcheng Ma Yanan Pu Shougang Chen 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2024年第6期121-136,共16页
Although extremely challenging,it is highly desirable to develop self-healing materials that exhibit high efficiency under environmental conditions for marine protection applications.In this work,polyurethane elastome... Although extremely challenging,it is highly desirable to develop self-healing materials that exhibit high efficiency under environmental conditions for marine protection applications.In this work,polyurethane elastomers with hydrogen bond and dimethylglyoxime-urethane(DOU)coordination complex were combined with in-situ dual-functional BiOI@Bi2S3 to synthesize high-efficiency photothermal cyclic self-healing antibacterial coating.The photothermal efficiency of BiOI@Bi2S3 is improved by 38% through interfacial regulation.BiOI@Bi2S3/PU rapidly rises by 50.2℃ within 300 s under near-infrared(NIR)light,which can trigger the hydrogen bond of polyurethane coating and recover the barrier properties of the coating through self-healing.Density functional theory was used to simulate and analyze the generation of multiple electron transfer paths after the vulcanization of BiOI,which improves the interfacial mobility of photogenerated carriers and generates more heat.Importantly,molecular dynamics verified the self-healing mechanism of hydrogen bond and the photothermal lifting mechanism of the coating.After 5th scratches and self-healing cycle tests,the coating has a self-healing efficiency of more than 80%,which can ensure the self-healing and anticorrosion protection performance of the coating for multiple cycles.The photocatalytic and photothermal properties of BiOI@Bi2S3 enhance the antibacterial rate of the coating up to 99%.This work provides heuristic perspectives for the design of coatings with anti-corrosion,antibacterial and self-healing properties. 展开更多
关键词 Self-healing Photothermal Interfacial regulation Dual-functional BiOI@Bi2S3 Antibacterial
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Enhancing structure and cycling stability of Ni-rich layered oxide cathodes at elevated temperatures via dual-function surface modification 认领 引用 被引量：5
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作者 Ying-De Huang Han-Xin Wei +11 位作者 Pei-Yao Li Yu-Hong Luo Qing Wen Ding-Hao Le Zhen-Jiang He Hai-Yan Wang You-Gen Tang Cheng Yan Jing Mao Ke-Hua Dai Xia-Hui Zhang Jun-Chao Zheng 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第12期301-309,I0008,共9页
High-nickel single-crystal layered oxide material has become the most promising cathode material for electric vehicle power battery due to its high energy density.However,this material still suffers from structural de... High-nickel single-crystal layered oxide material has become the most promising cathode material for electric vehicle power battery due to its high energy density.However,this material still suffers from structural degradation during cycling and especially the severe interfacial reactions at elevated temperatures that exacerbate irreversible capacity loss.Here,a simple strategy was used to construct a dualfunction Li1.5Al0.5Ge1.5P3O12(LAGP)protective layer on the surface of the high-nickel single-crystal(SC)cathode material,leading to SC@LAGP material.The strong Al-O bonding effectively inhibits the release of lattice oxygen(O)at elevated temperatures,which is supported by the positive formation energy of O vacancy from first-principal calculations.Besides,theoretical calculations demonstrate that the appropriate amount of Al doping accelerates the electron and Li+transport,and thus reduces the kinetic barriers.In addition,the LAGP protective layer alleviates the stress accumulation during cycling and effectively reduces the erosion of materials from the electrolyte decomposition at elevated temperatures.The obtained SC@LAGP cathode material demonstrates much enhanced cycling stability even at high voltage(4.6 V)and elevated temperature(55℃),with a high capacity retention of 91.3%after 100 cycles.This work reports a simple dual-function coating strategy that simultaneously stabilizes the structure and interface of the single-crystal cathode material,which can be applied to design other cathode materials. 展开更多
关键词 Lithium-ion battery Ni-rich cathode Dual-function coating Single-crystalline Elevated temperature
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Bimetallic active site nuclear-shell heterostructure enables efficient dual-functional electrocatalysis in alkaline media 认领 引用 被引量：6
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作者 Yu Cheng Xi Zhou +3 位作者 Qin-Min Pan Li-Fang Zhang Yu-Feng Cao Tao Qian 《Rare Metals》 SCIE EI CAS CSCD 2023年第9期3024-3033,共10页
Hydrogen,as a green and clean next-generation fuel,is a key to achieving the goal of carbon neutrality.Constructing an electrocatalyst with bifunctional hydrogen evolution and oxygen evolution activity in the same ele... Hydrogen,as a green and clean next-generation fuel,is a key to achieving the goal of carbon neutrality.Constructing an electrocatalyst with bifunctional hydrogen evolution and oxygen evolution activity in the same electrolyte is a key technology for producing hydrogen via water splitting.Herein,a bimetallic active site catalyst,which possessed an edge-riched MoS2nanoflakes array vertically growing on cubic CoS2,forming a nuclear-shell heterogeneous configuration,termed CSC-Mo S2@Co S2.was reported The optimal CSC-Mo S2@Co S2-24 possessed good dualfunctional electrocatalytic activity(hydrogen evolution(HER),10 m A·cm-2@241.5 m V and oxygen evolution(OER),10 m A·cm-2@350 m V).Especially,CSC-Mo S2@CoS2-24 exhibited an extremely high mass activity for HER,and only required an overpotential of~550 m V when reaching a large current density of 1422 m A·mg-1,which was20.6-fold that of the bulk CoS2(69 m A·mg-1),as well as exhibiting stability of up to 100 h.The good electrocatalytic performance was attributed to the nuclear-shell heterostructure of Mo S2@CoS2hybrid could bring critical synergies,improving efficient mass transfer and electron transfer processes between Co S2and Mo S2,which collaboratively promoted the electrocatalytic kinetics.It is foreseeable that the method proposed in this work will have guiding value for the preparation of dual-functional electrocatalysts with multi-interface heterostructures by assembling layered sulfides on cubic sulfides. 展开更多
关键词 Dual-functional electrocatalysts Nuclearshell cubic heterostructure Edge-riched Bimetallic active site Strong interaction
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Wideband switchable dual-functional terahertz polarization converter based on vanadium dioxide-assisted metasurface 认领 引用 被引量：2
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作者 De-Xian Yan Qin-Yin Feng +4 位作者 Zi-Wei Yuan Miao Meng Xiang-Jun Li Guo-Hua Qiu Ji-Ning Li 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第1期324-331,共8页
The terahertz technology has attracted considerable attention because of its potential applications in various fields.However,the research of functional devices,including polarization converters,remains a major demand... The terahertz technology has attracted considerable attention because of its potential applications in various fields.However,the research of functional devices,including polarization converters,remains a major demand for practical applications.In this work,a reflective dual-functional terahertz metadevice is presented,which combines two different polarization conversions through using a switchable metasurface.Different functions can be achieved because of the insulator-to-metal transition of vanadium dioxide(VO2).At room temperature,the metadevice can be regarded as a linear-to-linear polarization convertor containing a gold circular split-ring resonator(CSRR),first polyimide(PI)spacer,continuous VO2 film,second PI spacer,and gold substrate.The converter possesses a polarization conversion ratio higher than 0.9 and a bandwidth ratio of 81%in a range from 0.912 THz to 2.146 THz.When the temperature is above the insulator-to-metal transition temperature(approximately 68℃)and VO2 becomes a metal,the metasurface transforms into a wideband linear-to-circular polarization converter composed of the gold CSRR,first PI layer,and continuous VO2 film.The ellipticity is close to-1,while the axis ratio is lower than 3 dB in a range of 1.07 THz-1.67 THz.The metadevice also achieves a large angle tolerance and large manufacturing tolerance. 展开更多
关键词 metasurface polarization conversion vanadium dioxide dual-functional
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