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The interface engineering strategy assists the 3D core-shell structure Co3S4/CuS@NiFe LDH nanocoral spheres to achieve significant overall water splitting 认领 引用 被引量：3
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作者 Jun Yu Yangping Zhang +6 位作者 Nannan Zhang Jie Li Huiyu Sun Xinyu Gu Changqing Ye Tianpeng Liu Yukou Du 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第2期570-576,共7页
Designing a highly active and stable bifunctional catalyst is essential for achieving superior overall water splitting(OWS).In this study,a three-dimensional(3D)core-shell structure Co3S4/CuS@NiFe LDH nanocoral ... Designing a highly active and stable bifunctional catalyst is essential for achieving superior overall water splitting(OWS).In this study,a three-dimensional(3D)core-shell structure Co3S4/CuS@NiFe LDH nanocoral spheres electrocatalyst was constructed on nickel foam(NF)via an interfacial engineering strategy.This 3D core-shell heterostructure maximizes the exposure of active sites,optimizes the charge transport pathway and accelerates gas release rates.The protective shell strategy of NiFe LDH provides favorable stability,which contributes to inhibiting the electrochemical corrosion of the electrocatalyst and mitigating the toxic effects of Cl- and other microorganisms during the seawater splitting process.Moreover,the introduction of NiFe LDH induces a change in the OER mechanism from an adsorption evolution mechanism(AEM)to a lattice oxygen mechanism(LOM),which improves the intrinsic activity of the catalyst.Consequently,Co3S4/CuS@NiFe LDH demonstrates exceptional performance in the oxygen evolution reaction(OER)(η100=251 mV)and in the hydrogen evolution reaction(HER)(η100=254 mV),alongside remarkable stability over 100 h.For OWS,it exhibits a voltage of 1.46 V at 10 mA/cm2 and maintain stability for 100 h.Impressively,Co3S4/CuS@NiFe LDH still possesses outstanding activity and stability in natural alkaline seawater.This work proposes interfacial engineering to construct bifunctional catalysts with core-shell heterostructures,providing instructive guidelines for the design of highly efficient electrocatalysts toward seawater electrolysis. 展开更多
关键词 Core-shell structure Layered double hydroxides Transition metal sulphides Bifunctional catalyst Overall water splitting Overall seawater splitting
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Crystallization Engineering of GaAs/Sb2S3 Core-Shell Nanowires for Gain Manipulation of Photodetectors 认领 引用
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作者 Yu Hao Xuan Fang +9 位作者 Deng-Kui Wang Zhen Wang Dan Fang Yong Wang Xi-Yao Fu Jie Fan Hai-Zhu Wang Yong-Gang Zou Xiao-Hua Wang Jin-Hua Li 《Rare Metals》 SCIE EI CAS CSCD 2026年第2期420-430,共11页
Photodetectors,based on GaAs nanowires (NWs),hold significant promise in the fields of high integration micro-and nano-optoelectronics applications because of their outstanding electronic and optical properties.To dat... Photodetectors,based on GaAs nanowires (NWs),hold significant promise in the fields of high integration micro-and nano-optoelectronics applications because of their outstanding electronic and optical properties.To date,significant efforts have been directed toward enhancing the performance of photodetectors,aiming for high detectivity and fast response.However,considerable challenges remain in achieving both efficient separation of carriers and enhancing gain capabilities simultaneously.In this work,we report a high-performance GaAs core-shell nanowire photodetector featuring a hybrid-crystallization(HC) Sb2S3 shell that incorporates homogeneous crystalline quantum dots (QDs) within an amorphous matrix.The Sb2S3 shell reconfigures the valence valley and introduces trap states,thereby effectively separating photo-generated carriers spatially while serving as a conduit for minority carriers.The unique hybrid-crystallization shell emerges as a crucial factor in enhancing performance.The core-shell nanowire photodetector presents a high responsivity of 1061.3 A W-1,a detectivity of 1.2×1012cm Hz0.5W-1,and an external quantum efficiency (EQE) of 1.63×105% at 5 V under 808 nm irradiation,surpassing those of conventional GaAs nanowire photodetectors.Moreover,this device demonstrates rapid response characteristics.These findings underscore a unique strategy for designing high-performance nanowire photodetectors through the incorporation of engineered amorphous quantum dots. 展开更多
关键词 core-shell structures hybrid-crystallization Sb2S3 minority carriers'channels nanowire photodetectors spatial separation
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Synergistic integration of hierarchical structure and oxygen vacancy engineering in core-shelled Ni and Zn co-doped Co3O4 microsphere for efficient detection of triethylamine gas 认领 引用 被引量：1
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作者 Wei Ding Fengrui Zhu +3 位作者 Siyu Zheng Yan Chao Yin Qiqi Zhao Jie Hu 《Rare Metals》 SCIE EI CAS CSCD 2025年第9期6426-6441,共16页
This work presents a hierarchical yolk-shell NiZn-Co3O4sphere with abundant oxygen vacancy by utilizing structure optimization and composition regulation for efficient detection of triethylamine(TEA)gas.A compar... This work presents a hierarchical yolk-shell NiZn-Co3O4sphere with abundant oxygen vacancy by utilizing structure optimization and composition regulation for efficient detection of triethylamine(TEA)gas.A comparative exploration of TEA gas sensing characterization for different Co3O4-based sensors is conducted systematically.The result shows that the sensor based on the NiZn–Co3O4HCSS displays the highest sensing response of 42.5 at a working temperature of 180°C.In particular,the Ni Zn–Co3O4HCSS device possesses a fast responserecovery speed,excellent anti-humidity and outstanding long-term stability of up to 40 days to TEA gas.The improved TEA gas sensing property can be attributed to the intriguing hierarchical core–shell architecture and abundant oxygen vacancy induced by NiZn co-doping.Moreover,to study the sensing mechanism in detail,the adsorption behavior and charge transfer phenomenon between OV–NiZn–Co3O4(110)and TEA molecule is carried out by the density functional theory(DFT).This work demonstrates an outstanding performance of Ni and Zn co-doped hierarchical core–shell Co3O4in TEA detection by combining theoretical and experimental investigations into mechanisms for optimized TEA gas molecule sensing. 展开更多
关键词 Core-shell structure Gas sensor Co-doping Oxygen vacancy
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Engineering core-shell-structured BaAl2O4overlaid Ni catalyst with strong metal-support interaction for durable and efficient CH4 dry reforming 认领 引用
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作者 Qiangqiang Xue Kang Hui Lim +7 位作者 Zhehao Sun Binhang Yan Zongyou Yin Ange Nzihou Yujun Wang Guangsheng Luo Feng-Shou Xiao Sibudjing Kawi 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第10期807-819,共13页
Dry reforming of methane(DRM)over Ni-based catalysts is an economically reasonable technology for large-scale CO2utilization.However,prolonged Ni sintering and carbon deposition reduce the durability and efficiency... Dry reforming of methane(DRM)over Ni-based catalysts is an economically reasonable technology for large-scale CO2utilization.However,prolonged Ni sintering and carbon deposition reduce the durability and efficiency of DRM,hindering its engineering application.Herein,we propose a facile approach by combining continuous microscale coprecipitation with solid-state reactions to construct a BaAl2O4-overlayer-confined Ni catalyst.The 5-wt%-Ni@BaAl2O4catalyst exhibited advanced CO2and CH4conversions of 96% and 86% at 800℃ and a GHSV of 144 L gcat-1.h-1.Moreover,the kd-CO2and kd-CH4of Ni@BaAl2O4were 0.0063 and 0.0029 h-1;which are approximately half and one-thirds of those of Ni/BaAl2O4and slightly better than those of Ni@MgAl2O4,underscoring the versatility of the proposed synthesis protocol for constructing core-shell structures.XAS,HAADF-STEM-EDS,and CO transmission-IR characterizations confirmed the SMSI of~2-nm amorphous BaAl2O4-overlaid~10 nm Ni with an overall mesoporous structure.After a long-term test,the sintering and coking inhibition effects of Ni@BaAl2O4(10→11 nm,0.55 mgCgcat-1.h-1)outperformed Ni/BaAl2O4(13→22 nm,1.90 mgCgcat-1.h-1)and Ni@MgAl2O4.In situ time-resolved CH4→CO2transient response,DRIFTS experiments,and DFT calculations suggested that Ni@BaAl2O4and Ni/BaAl2O4followed the Mars-van Krevelen and Langmuir-Hinshelwood redox mechanisms,respectively.The functional interfacial lattice oxygen promoted the removal of Cads*on Ni and core-shell structure induced fast CO2adsorption and CO desorption.The present study provides a facile approach for constructing a stable and active Ni-based core-shell catalyst.Furthermore,it offers novel insights into the functionalities of non-reducible spinel overlayers in the DRM process. 展开更多
关键词 Heterogeneous catalysis Overlayer Core-shell Sintering Carbon deposition
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Electron-enriched iridium active centers via spontaneous core-shell architecture engineering for efficient and durable water oxidation catalysis 认领 引用
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作者 Hongxiang Wu Xin Guan +11 位作者 Zhaoping Shi Yibo Wang Ming Yang Zi’ang Wang Xiaohui Liu Kai Li Tao Gan Jiong Li Minhua Shao Meiling Xiao Wei Xing Changpeng Liu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第11期751-759,I0017,共9页
The development of robust and active oxygen evolution reaction(OER)electrocatalysts is urgently desirable for the widespread implementation of proton exchange membrane water electrolyzers(PEMWE),yet remains a critical... The development of robust and active oxygen evolution reaction(OER)electrocatalysts is urgently desirable for the widespread implementation of proton exchange membrane water electrolyzers(PEMWE),yet remains a critical challenge.We propose a catalyst named U-IrRuOx@IrRu(where“U”denotes“ultrathin”),which features a spontaneously formed amorphous oxide shell that synergistically optimizes the electronic structure and corrosion resistance.Combined experimental and theoretical studies reveal that the oxyphilic Ru-induced electronic modulation weakens Ir-O binding strength,thereby accelerating the rate-determining step of *OOH formation.In addition,the metallic alloy core functions as an electron reservoir,suppressing excessive oxidation of active sites while ensuring high conductivity.Due to these attributes,the U-IrRuOx@IrRu demonstrates a low overpotential of 230 mV at 10 mA cm-2,outperforming commercial IrO2(CM)by 65 mV.When integrated into a PEMWE with an ultra-low Ir loading of 0.25 mgIrcm-2,it delivers an industrial current density of 2 A cm-2at 1.74 V and 3 A cm-2at 1.836 V,surpassing the U.S.Department of Energy(DOE)2025 target.More impressively,the U-IrRuOx@IrRubased electrolyzer can stably operate for over 550 h,with an extremely low decay rate of 7.52μV h-1,corresponding to a predicted lifespan of 23,000 h with 90%performance retention. 展开更多
关键词 Oxygen evolution reaction Electron-enriched iridium active centers PEM water electrolyzer Spontaneous core-shell architecture
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Multi-scale coherent interfaces in core-shell Sr0.875La0.1TiO3-based textured ceramics for enhanced high temperature thermoelectric performance 认领 引用 被引量：1
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作者 Zhihao Lou Ziyao Wei +4 位作者 Xiaoyu Xu Ping Zhang Jingji Zhang Jie Xu Feng Gao 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第5期279-289,I0007,共11页
SrTiO3-based thermoelectric ceramics show potential for high-temperature energy harvesting but face challenges from inefficient carrier transport and high thermal conductivity.This work presents a multi-scale struc... SrTiO3-based thermoelectric ceramics show potential for high-temperature energy harvesting but face challenges from inefficient carrier transport and high thermal conductivity.This work presents a multi-scale structural engineering strategy to address these challenges,fabricating textured Sr0.875La0.1Ti O3m Ti/10 wt%Bi2O3(SLTTB)ceramics via plate-like SrTiO3templates.Through this design,the ceramics form a unique core-shell architecture,where template seeds act as growth cores for epitaxially alignedoriented grains,forming coherent interfaces with a precipitate-rich interlayer and a precipitate-free shell.In the interlayer,uniformly distributed“peanut-shaped”Bi-Ti_nO2n-1nanoparticle pairs enhance electron mobility and phonon scattering.The hierarchical microstructure creates multiscale coherent interfaces that reduce electron grain boundary scattering,enabling preferential electron transport pathways parallel to the casting direction.This architecture enables the decoupling of electrical and thermal properties,with a power factor reaching 1815μW/m/K2at 1073 K with thermal conductivity suppressed by interfacial and nanoparticle scattering.Consequently,the SLTTB textured ceramic achieves a notable ZT of 0.64 at 1073 K,a significant enhancement over conventional counterparts.This work demonstrates a multi-scale structural strategy integrating template-induced texture,core-shell design,and nanoscale interface modulation to decouple the electrical and thermal properties of SrTiO3-based materials,and provides a roadmap for tailoring the electrical-thermal transport properties of thermoelectric textured ceramics. 展开更多
关键词 Strontium titanate Thermoelectrics Textured ceramics Core-shell architecture Coherent interfaces
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Nanocellulose-Induced“Surface-Lock”Engineering:Curbing the Dissolution of MnO2for High-Performance Zn-MnO2Flexible Electrodes 认领 引用 被引量：2
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作者 Meng Zhang Ting Xu +8 位作者 Wei Liu Han Zhang Junjie Qi Xuan Wang Yaxuan Wang Liyu Zhu Kun Liu Junfeng Wang Chuanling Si 《Carbon Energy》 SCIE EI CAS CSCD 2026年第4期1-14,共14页
Carbon-based substrates in Zn-MnO2flexible batteries have issues of low adhesion to MnO2,impacting cycle stability and capacity performance.A triple-synergistic strategy integrating C-O-Mn covalent bonding,wetta... Carbon-based substrates in Zn-MnO2flexible batteries have issues of low adhesion to MnO2,impacting cycle stability and capacity performance.A triple-synergistic strategy integrating C-O-Mn covalent bonding,wettability optimization,and hierarchical mesoporous engineering via cellulose nanofibers/carbon nanotube(CNF/CNT)-modified carbon cloth(CC)was proposed.This design achieves a“surface-locking”effect between the substrate and electrode materials,which was proven through theory and experiments.Density functional theory(DFT)simulations validate the“surface-locking”mechanism,where oxygen functionalities on CNF can form robust CO-Mn bonds with MnO2,inducing an increase in MnO2adsorption energy from-0.21 e V(pristine CC)to-1.36 e V,effectively suppressing Mn dissolution.Optimal wettability(contact angle:97°)reduced Zn2+desolvation and water-induced side reactions.Hierarchical pore structures accelerated Zn2+diffusion.The optimized CC@CNF1/CNT2-MnO2cathode achieves 92%capacity retention after 2000 cycles at 1 A/g.This study highlights a surface engineering strategy that effectively addresses the individual challenges associated with interfacial adhesion,reaction kinetics,and ion transport.This strategy offers fundamental insights into electrode interface modification for the development of nextgeneration flexible energy storage systems. 展开更多
关键词 cellulose nanofibers flexible zinc batteries interface engineering
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Synthetic metabolic engineering of functional crops:Boosting nutrition and human health 认领 引用 被引量：5
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作者 Nan Chai Jie Xu +12 位作者 Ruixiang Zhang Guangzhou Li Jun Wen Liying Su Yang Xue Tie Li Jialin Liu Dongchang Zeng Jiantao Tan Jiaqi Huang Letian Chen Yao-Guang Liu Qinlong Zhu 《The Crop Journal》 SCIE CSCD 2026年第1期8-21,共14页
A growing global population and the increasing prevalence of diet-related health issues such as“hidden hunger”,obesity,hypertension,and diabetes necessitate a fundamental rethinking of crop design and breeding.Synth... A growing global population and the increasing prevalence of diet-related health issues such as“hidden hunger”,obesity,hypertension,and diabetes necessitate a fundamental rethinking of crop design and breeding.Synthetic metabolic engineering offers a method to modify and redesign metabolic pathways to increase the nutritional value of crops.We summarize recent advances in the biofortification of key nutrients including provitamin A,vitamin C,vitamin B9,iron,zinc,anthocyanins,flavonoids,and unsaturated fatty acids.We discuss the potential of multi-gene stacking,gene editing,enzyme engineering,and artificial intelligence in synthetic metabolic engineering.We propose future research directions and potential solutions centered on leveraging AI-driven systems biology,precision gene editing,enzyme engineering,agrobacterium-mediated genotype-independent transformation,and modular metabolic engineering strategies to develop next-generation nutritionally enhanced super crops and transform global food systems. 展开更多
关键词 Synthetic biology Synthetic metabolism engineering Functional crops Multigene stacking and gene editing Artificial intelligence
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Crop metabolic engineering towards enhanced resistance to pests and pathogens 认领 引用 被引量：1
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作者 Jiaojiao Wang Jinyue Yang +5 位作者 Junxing Yu Yaxian Liu Youping Wang Amr El-Demerdash Wenbin Zhou Dewei Wu 《The Crop Journal》 SCIE CSCD 2026年第1期48-60,共13页
Plants produce a vast array of specialized metabolites that serve as essential defenses against herbivores and pathogens.However,the capacity to produce these compounds differs substantially among plant species and is... Plants produce a vast array of specialized metabolites that serve as essential defenses against herbivores and pathogens.However,the capacity to produce these compounds differs substantially among plant species and is frequently diminished during domestication.Advances in synthetic metabolic engineering enable efficient elucidation and engineering of plant specialized metabolic pathways active in crop pest and pathogen resistance.This review summarizes strategies and workflows for selecting defensive metabolic pathways,identifying candidate biosynthetic genes,and rewiring native or introducing heterologous pathways to enhance crop resistance to pests and pathogens.Strategies include weighted gene co-expression network construction,biosynthetic gene cluster scanning,and metabolite genome-wide association studies for pathway discovery,as well as transcriptional reprogramming,enzyme activity optimization,and transporter deployment for pathway engineering.We further discuss challenges in using synthetic metabolic engineering to enhance crop resistance and highlight the potential of artificial intelligence in addressing them. 展开更多
关键词 Crop resistance Synthetic metabolic engineering Plant specialized metabolite Synthetic biology
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Ultra-low Pt core-shell electrocatalysts:Noble metal core from irregular binarity to structure-shape-selectivity multielement 认领 引用
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作者 Xuemei Wang Tianlai Hou +4 位作者 Xin Ba Ruixin Wang Haiping Xu Songrui Wang Fanpeng Kong 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第4期298-316,I0008,共19页
Highly efficient low-Pt loading electrocatalysts towards oxygen reduction reaction(ORR)is urgent for advanced membrane electrode assemblies(MEA),directly determining the deployment of low-temperature fuel cells.For OR... Highly efficient low-Pt loading electrocatalysts towards oxygen reduction reaction(ORR)is urgent for advanced membrane electrode assemblies(MEA),directly determining the deployment of low-temperature fuel cells.For ORR,only exposed Pt atoms catalyze molecular oxygen reduction into water,signifying that interior Pt atoms are theoretically replaced by cheaper metals.Core-shell structure is well-known as an ideal model to solve this challenge where Pt atoms mainly locate at the(near-)surface region.Additionally,interior core presents a promising promoter role towards d-band center of Pt shell by short-range ligand effect and long-range strain effect,both which is affected by their large difference in electronegativity and lattice mismatch,respectively.Therefore,the adsorption energy of oxygenated species on Pt shell surface is theoretically optimized by well-designed core structure.In this review,the development of low Pt loading core-shell electrocatalysts is systematically summarized.The effect of composition,shape,element distribution and anisotropy on performance and corresponding enhancement mechanism is also discussed in depth.This review provides an encouraging guideline to fabricate high-performance low-Pt loading core-shell electrocatalysts. 展开更多
关键词 Oxygen reduction Core-shell Strain structure Electronic effect
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Coffee grounds-derived core-shell aerogels:Preparation and application for diesel pollutant degradation in water 认领 引用
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作者 Lihua Chen Bin Zhang +4 位作者 Yang Jin Yanyu He Yuhan Zhang Wenyu Zheng Shaopeng Chen 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第2期264-273,共10页
The effective and environmentally friendly management of oily wastewater,alongside the beneficial conversion of waste biomass,holds paramount importance for environmental conservation,public health,and sustainable soc... The effective and environmentally friendly management of oily wastewater,alongside the beneficial conversion of waste biomass,holds paramount importance for environmental conservation,public health,and sustainable societal progress.In this research,an innovative biomass core-shell bioreactor(CGC@SiO2 aerogel) with selective adsorption and degradation properties was developed.The reactor's core is composed of coffee cellulose aerogel,offering a porous framework conducive to microbial colonization while safeguarding microorganisms from adverse external factors.The shell integrates hydrophobic silica enriched with polydimethylsiloxane,which alters the material's hydrophilic properties,enabling it to remain afloat on water for up to 100 days.This superhydrophobic layer maintained a contact angle of 150° even after ten consecutive rubbings.Experimental results indicate that the material performs exceptionally well in oil-water separation,as demonstrated by its success in 9 consecutive oil-water separations.It achieved 99 % selective adsorption,91 % removal,and 46.2 % degradation of a 3 wt.% diesel solution under conditions of 37℃,120 r/min,and pH=7.Additionally,tests assessing environmental tolerance revealed the material's robust adaptability and stability across varying pH levels and temperatures.Compared to traditional hydrophobic and lipophilic materials or free-floating microorganisms,CGC@SiO2 aerogel not only efficiently captures oil pollutants but also degrades them into non-hazardous substances.Combining biodegradation with selective adsorption has shown to be an effective approach for treating oily wastewater,offering significant practical application potential.The low-carbon production of CGC@SiO2aerogel aligns with circular economy principles,underscoring its role in sustainable development. 展开更多
关键词 Cellulose aerogel Core-shell structure Selective adsorption Microbial degradation Environmental remediation
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Synergistically coupling of vertically oriented Ru/Co co-doped MoS2 with interfacial engineering for efficient electrochemical hydrogen evolution 认领 引用
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作者 Yanqi Ding Tao Zhang +5 位作者 Xue Ren Lingyun Wang Qian Chen Hongbing Song Meng Xiao Tingting Huang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第5期127-138,共12页
This article proposes an optimized strategy integrating bimetallic doping with interfacial wettability engineering to successfully fabricate a Ru-Co bimetallic-doped MoS2 catalyst vertically oriented on modified ca... This article proposes an optimized strategy integrating bimetallic doping with interfacial wettability engineering to successfully fabricate a Ru-Co bimetallic-doped MoS2 catalyst vertically oriented on modified carbon cloth for efficient hydrogen evolution reaction.The treated carbon cloth not only enhances its surface hydrophilicity but also provides nucleation sites for the growth of RuCo-MoS2 nanosheets.Subsequently,the development of an oriented growth induction strategy enables the vertical alignment of bimetallic atom-doped MoS2 on modified carbon cloth.This vertically grown structure is conducive to exposing more active sites,shortening the proton transport path,reducing the charge transfer impedance.Moreover,this study employs a reductive bonding technique to precisely modulate the coordination environments and electron distributions of co-doped Co and Ru bimetallic atoms,as well as significantly improving the hydrogen evolution reaction kinetics.Therefore,the as-prepared RuCo-MoS2/MCC catalyst demonstrates excellent HER performance in acidic electrolyte,exhibiting a relatively low overpotential of 62 mV at 10 mA·cm-2and a small Tafel slope of 48.2 mV·dec-1. 展开更多
关键词 Molybdenum disulfide Interfacial wettability engineering Defect engineering Bimetallic doping Electrocatalysis Hydrogen production
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Molecular sieving and skeletal engineering of a pitch precursor to overcome reaction heterogeneity for high-performance hard carbon anodes in sodium-ion batteries 认领 引用
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作者 Zenghao Wang Bin Lou +7 位作者 Jun Li Luning Chai Ning Xiang Shifu Cheng Zhichen Zhang Xiangen Shan Rongheng Gou Dong Liu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第5期290-301,I0007,共12页
Pitch-derived hard carbons(HC)are promising anodes for sodium-ion batteries(SIBs)due to their high carbonization yield and low cost.However,the inherent compositional heterogeneity of pitch induces non-uniform oxidati... Pitch-derived hard carbons(HC)are promising anodes for sodium-ion batteries(SIBs)due to their high carbonization yield and low cost.However,the inherent compositional heterogeneity of pitch induces non-uniform oxidative cross-linking during conventional pre-oxidation,which not only renders the microstructure of HC difficult to regulate but also significantly degrades its sodium storage performance.Here,we identify the“shielding effect”of oxidation-inert components in pitch as the root cause of this structural inhomogeneity.To overcome this limitation,we propose a novel“sieving-and-reinforcement strategy”.This involves liquid-phase crosslinking to construct a polar three-dimensional(3D)carbon skeleton,followed by stepwise extraction as a molecular sieving process to remove inert components and expose the reactive skeleton,and finally,oxygen etching as a reinforcement step to drastically enhance the crosslinking density and defect population.This controllably engineered carbon skeleton in-situ evolves into an HC with a uniform hierarchical porous structure,featuring abundant ultramicropores,optimally sized closed pores(-2.15 nm),and ultrathin pore walls during carbonization.The resulting HC anode delivers a high reversible capacity of 363.3 mAh g-1at 50 mA g-1,with an impressive plateau capacity contribution of 71.5%.It also demonstrates exceptional cycling stability,retaining203.1 mAh g-1after 500 cycles at a high current density of 1000 mA g-1.This work provides a fundamental understanding of precursor engineering,paving the way for the rational design of advanced carbon materials for next-generation energy storage. 展开更多
关键词 Hard carbon Sodium-ion batteries Pitch Precursor engineering Reaction heterogeneity Skeletal engineering Closed pores
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In situ exploration of oxygen electrocatalysis using core-shell nanostructure-enhanced Raman spectroscopy 认领 引用
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作者 Zhengxin Qian Jishuang Zeng +5 位作者 Sen Zhao Qingna Zheng Jinghua Tian Qingchi Xu Hua Zhang Jianfeng Li 《Nano Materials Science》 EI CAS CSCD 2026年第4期873-885,共13页
Advancements in fuel cells and water electrolyzers have significantly bolstered the utilization of hydrogen energy.Notably,the oxidation and reduction processes of oxygen at the electrode—termed oxygen evolution reac... Advancements in fuel cells and water electrolyzers have significantly bolstered the utilization of hydrogen energy.Notably,the oxidation and reduction processes of oxygen at the electrode—termed oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)—manifest sluggish reaction kinetics,thus requiring noble metals as catalysts,which considerably impedes system efficiency and cost.The imperative for enhancing reaction rates and diminishing overpotential necessitates the development of effective catalysts,which strongly depends on the mechanistic understanding of these reactions at the molecular level.Therefore,this review summarizes our recent efforts in utilizing in situ enhanced Raman spectroscopy,especially the borrowing surface-enhanced Raman spectroscopy(SERS)strategy,shell-isolated nanoparticle-enhanced Raman spectroscopy(SHINERS),and the SHINERS-satellite strategy,to capture oxygen intermediate species as a bridge to investigate the molecular mechanisms of OER and ORR.Combining in situ SERS with other characterization techniques and theoretical simulation,the structural evolution of active sites and intermediates,including*OOH,*OH,*OO,etc.,during OER/ORR has been monitored under reaction conditions,and the reaction mechanisms together with structureactivity correlations have been identified at the molecular level.These findings may provide a pivotal scientific foundation towards the discovery of better materials for electrochemical hydrogen energy. 展开更多
关键词 Surface-enhanced Raman spectroscopy Oxygen evolutioneduction reaction Reaction mechanism In-situ characterization Core-shell nanostructures
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Design and Phase-Field Simulation of Core-Shell Microstructure in TiNb Binary Alloy 认领 引用
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作者 Chen Gongyu Cheng Li +2 位作者 Liu Zihan Zhang Gang Zhu Jiaming 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2026年第5期1129-1136,共8页
The core-shell structure in bulk TiNb binary alloy was designed and studied by phase-field simulations,where various core-shell structures were obtained by precise control of the initial and boundary conditions of the... The core-shell structure in bulk TiNb binary alloy was designed and studied by phase-field simulations,where various core-shell structures were obtained by precise control of the initial and boundary conditions of the TiNb binary alloy system during spinodal decomposition,and then the formation mechanism of core-shell structure was revealed.In addition,the influences of initial temperature gradient,average temperature,and initial concentration distribution of the system on the core-shell structure were investigated.Results show that the initial concentration gradient is the key factor for forming the core-shell structure.Besides,larger initial temperature gradient and higher average temperature can promote the formation of core-shell structure,which can be stabilized by adjusting the initial concentration distribution of the Nb-rich region in TiNb binary alloy.As a theoretical basis,this research provides a novel and simple strategy for the preparation of TiNb-based alloys and other materials with peculiar core-shell structures and desirable mechanical and physical properties. 展开更多
关键词 TiNb binary alloy phase-field simulation spinodal decomposition core-shell structure microstructure evolution
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Facet engineering of metal-organic frameworks enables high piezoelectricity and piezocatalysis:A case study of ZIF-8 认领 引用
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作者 Zhemi Xu Haolin Cui +9 位作者 Shule Zhang Peiyuan Guan Tianhao Ji Jin Yan Qianyu Li Dewei Chu Yunxuan Weng Zhimin Ao Yang Liu Jian Jin 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期312-318,共7页
The exposure of specific facets in catalysts plays a pivotal role in surface/interface reactions.This study systematically explores facet engineering as a novel approach to enhancing the piezoelectric and piezo-photoc... The exposure of specific facets in catalysts plays a pivotal role in surface/interface reactions.This study systematically explores facet engineering as a novel approach to enhancing the piezoelectric and piezo-photocatalytic capabilities of metal-organic frameworks(MOFs),with a focus on ZIF-8 as a model compound.By selectively exposing specific facets-(100),(110),and a combination of both in mixed configurations,this research examines how facet orientation affects piezoelectric properties,charge separation efficiency,and catalytic performance.The ZIF-8 samples,identified as ZIF-8-RD,ZIF-8-CUBE,ZIF-8-TRD_1,and ZIF-8-TRD2 demonstrated distinct catalytic activities in photocatalysis,piezocatalysis,and piezo-photocatalysis.Notably,ZIF-8-TRDs,with the mixed-facet exposure,showed superior catalytic performance,achieving up to 94%degradation of tetracycline(TC)in piezo-photocatalysis,a substantial improvement over the single-facet variant.This enhanced performance is attributed to the mixed facets'higher carrier concentration and superior charge separation facilitated by the increased internal piezoelectric potential.Density functional theory(DFT)calculations corroborate the experimental results,revealing that mixed facets contribute to a larger dipole moment,indicating greater structural asymmetry and piezoelectric efficiency.The findings underscore facet engineering as an effective strategy to optimize MOF-based catalysts,opening avenues for high-performance materials tailored for environmental remediation and sustainable energy applications.This work not only pioneers facet engineering in MOF piezophotocatalysts but also opens new avenues for the development and enhancement of high-performance MOF in piezoelectricity. 展开更多
关键词 MOFs Facet engineering Piezoelectric properties Piezo-photocatalysis
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MXene-Based Materials:Compositional Engineering for High-Performance Microwave Absorption 认领 引用
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作者 Pan-Pan Zhou Shi-Lin Yuan +6 位作者 Wen-Yu Cao Xiao-Chi Lu Ya-Wei Kuang Xue-Kun Hong Yu-Shen Liu Li-Xi Wang Qi-Tu Zhang 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期183-215,共33页
The rapid advancement of aerospace and electronic information technologies has imposed increasingly stringent requirements on microwave absorbing materials(MAMs),such as high absorption efficiency,lightweight,and envi... The rapid advancement of aerospace and electronic information technologies has imposed increasingly stringent requirements on microwave absorbing materials(MAMs),such as high absorption efficiency,lightweight,and environmental stability,making the development of advanced MAMs urgent for both civilian and national defense applications.MXenes,as an emerging two-dimensional material,exhibit great potential as MAMs due to their tunable surface chemistry,excellent conductivity,and diverse composite properties.However,existing reviews of MXene-based MAMs lack a systematic overview of the synergistic mechanisms between MXenes and other novel materials as well as composition and structure synergistic regulation strategies for performance optimization.This work comprehensively reviews the latest research progress on MXene-based MAMs,first elaborating on their various loss mechanisms,including conductive loss,polarization loss,and magnetic loss.Furthermore,various composite strategies(hybridization with carbon-based,magnetic,polymeric,and ceramic materials)and their synergistic effects are explored together with the impact of structural engineering(0D/1D/2D/3D,heterostructures,porous structures)on the tuning of electromagnetic wave absorption performance.Finally,this work discusses the current challenges and future development directions of MXene-based MAMs,aiming to establish composition-structure-function correlations and provide a reference for their future development. 展开更多
关键词 compositional engineering magnetoelectric synergy microwave absorption MXene
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Defect engineering of TiO2 for efficient photocatalytic transfer hydrogenation with palladium as cocatalyst and water as a hydrogen source 认领 引用
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作者 En Zhao Jingyuan Su +6 位作者 Hehe Fan Bing Nan Lina Li Haifeng Qi Weiwei Fang Wenjun Zhang Zupeng Chen 《Green Energy & Environment》 SCIE EI CAS CSCD 2026年第2期557-564,共8页
Photocatalytic transfer hydrogenation using water as the proton source has emerged as an attractive and green approach for the catalytic reduction of unsaturated bonds.Herein,we report an oxygen-defective TiO2-supp... Photocatalytic transfer hydrogenation using water as the proton source has emerged as an attractive and green approach for the catalytic reduction of unsaturated bonds.Herein,we report an oxygen-defective TiO2-supported palladium catalyst(Pd-TiO2-Ov)for efficient photocatalytic water-donating transfer hydrogenation of anethole towards 4-n-propylanisole in a high yield of 99.9%,which is significantly higher compared to the pristine TiO2-supported palladium catalyst(Pd-TiO2,74%).The enhanced performance is ascribed to the presence of oxygen vacancies,which facilitate light absorption and suppress the recombination of photogenerated electron-hole pairs.Furthermore,the Pd-TiO2-Ov is versatile in hydrogenating various alkene substrates including those with hydroxyl,ether,fluoride,and chloride functional groups in full conversion,thus offering a green method for transfer hydrogenation of alkenes.This study provides new insights and advances in current hydrogenation technology with water as the proton source. 展开更多
关键词 Photocatalysis Transfer hydrogenation Palladium Defect engineering Water splitting
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Band engineering and recombination mechanisms in lead-free perovskite solar cells 认领 引用
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作者 Wei Liu Tingxue Zhou +1 位作者 Liang Chu Xing’ao Li 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第2期703-712,共10页
All-inorganic lead-free perovskite solar cells have emerged as environmentally benign candidates;however,their device performance is still constrained by pronounced carrier recombination losses in the bulk and at inte... All-inorganic lead-free perovskite solar cells have emerged as environmentally benign candidates;however,their device performance is still constrained by pronounced carrier recombination losses in the bulk and at interfaces.By combining energy band alignment analysis with detailed modeling of recombination mechanisms,a systematic strategy for optimizing hole transport layers is developed.The results reveal that a negative valence band offset produces a cliff-like interface,which facilitates hole extraction while also accounting for the observed variations in open-circuit voltage.Furthermore,short-circuit current losses are quantitatively attributed to different recombination pathways,modeled by incorporating radiative,Shockley–Read–Hall,Auger,and interface recombination processes.This comprehensive approach not only clarifies the correlation between energy level alignment and recombination dynamics but also highlights the competing roles of band offset and interface defects in determining device performance.The optimized device architecture,based on Ge-based lead-free perovskites,achieves a power conversion efficiency of 25.1%,with an open-circuit voltage of 1.29 V,a short-circuit current density of 22.5 mA·cm-2,and a fill factor of 86.3%.These findings provide theoretical guidance for designing stable,high-performance,and environmentally friendly lead-free perovskite solar cells. 展开更多
关键词 perovskite solar cells lead-free band engineering recombination
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Identification of an(AlNi2)@(YNi3+Cr2O3+Hf)heterogeneous nano core-shell structure and triple oxide barrier in enhancing thermal stability in Fe18Co18Cr18Ni36Al9Y0.5Hf0.5high-entropy coatings 认领 引用
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作者 Zekun Xu Yanhui Hou Guangqiang Li 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第4期1187-1202,I0006,共16页
This study innovatively prepared a high-performance Fe18Co18Cr18Ni36Al9Y0.5Hf0.5high-entropy alloy coating via laser cladding.The coating features a stable face-centered cubic(FCC)solid solution p... This study innovatively prepared a high-performance Fe18Co18Cr18Ni36Al9Y0.5Hf0.5high-entropy alloy coating via laser cladding.The coating features a stable face-centered cubic(FCC)solid solution phase and a unique nanoscale(AlNi2)@(YNi3+Cr2O3+Hf)core-shell structure.The study also proposed a triple oxide barrier design using Cr,Y,and Al,enhancing oxide stability and compactness.The oxide layer forms Cr2O3outer shell and Al2O3+Y2O3bonding layer,effectively blocking oxygen and reducing oxidation rate.This structure promotes Hf distribution and rare earth element activity.The high-entropy alloy with this nano core-shell structure,featuring a Cr2O3outer shell,an Al2O3and Y2O3triple oxide barrier bonding layer and uniformly dispersed rare earth elements,effectively prevents further contact between oxygen and metal,and reduces the oxidation rate. 展开更多
关键词 High-entropy alloys coatings Laser cladding Nano core-shell structure Oxidation resistance Rare earths
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