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A simple physical mixing method for MnO2/MnO nanocomposites with superior Zn^2+storage performance 认领 引用 被引量:4
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作者 Xiao-bei ZANG Ling-tong LI +5 位作者 Zhi-xin SUN Rabah BOUKHERROUB Jia-xin MENG Kun-peng CAI Qing-guo SHAO Ning CAO 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2020年第12期3347-3355,共9页
MnO2/MnO cathode material with superior Zn^2+storage performance is prepared through a simple physical mixing method.The MnO2/MnO nanocomposite with a mixed mass ratio of 12:1 exhibits the highest specific capacity(36... MnO2/MnO cathode material with superior Zn^2+storage performance is prepared through a simple physical mixing method.The MnO2/MnO nanocomposite with a mixed mass ratio of 12:1 exhibits the highest specific capacity(364.2 mA·h/g at 0.2C),good cycle performance(170.4 mA·h/g after 100 cycles)and excellent rate performance(205.7 mA·h/g at 2C).Analysis of cyclic voltammetry(CV)data at various scan rates shows that both diffusioncontrolled insertion behavior and surface capacitive behavior contribute to the Zn2+storage performance of MnO2/MnO cathodes.And the capacitive behavior contributes more at high discharge rates,due to the short paths of ion diffusion and the rapid transfer of electrons. 展开更多
关键词 zinc-ion battery MnO2/MnO cathode material physical mixing method reaction kinetics
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Electrocatalysis of Oxygen Evolution Reaction on Ti/SnO_2+RuO_2+MnO_2/MnO_2 Electrode in Sulfuric Acid Solution 认领 引用 被引量:5
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作者 LIANG Zhen-hai FAN Cai-mei SUN Yan-ping 《Chemical Research in Chinese Universities》 SCIE EI CAS 2001年第3期287-292,共6页
The Ti-Supported MnO_2 electrode was modified by introducing SnO_2+RuO_2+MnO_2 as an intermediate layer into the Ti/MnO_2 interface. The anodic polarization curves were measured at various temperatures ranging from 30... The Ti-Supported MnO_2 electrode was modified by introducing SnO_2+RuO_2+MnO_2 as an intermediate layer into the Ti/MnO_2 interface. The anodic polarization curves were measured at various temperatures ranging from 30 to 80℃ and the activation energy for the oxygen evolution reaction was evaluated. The experimental activation energy increased linearly with increasing the overpotential. The activation energy at the equilibrium potential was linearly correlated with the difference between the crystal field stabilization energies of Mn4+ at initial state and Mn4+ at transition state. The electrocatalysis characteristics of the anode were discussed by means of the mechanism of the substitution reaction of the ligand(S_N1 and S_N2) and molecular orbital theory. The results show that the anode has better electrocatalystic characteristics. 展开更多
关键词 Ti/SnO2+RuO2+MnO2/MnO2 anode Electroeatalysis Activation energy Crystal field theory Molecular Orbital theory
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电热式焙烧冷却炉在二氧化锰还原中的应用 认领 引用 被引量:2
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作者 谭永鹏 张毅 《中国锰业》 2009年第2期49-52,共4页
主要介绍了电热式焙烧冷却炉的结构及产量1500 kg/h二氧化锰还原单元的系统设计思路,分析了实际运行过程中出现的问题及解决方法。运行结果表明:电热式焙烧冷却炉结构设计合理,该单元的设计完全达到了工艺要求。
关键词 二氧化锰 一氧化锰 还原 焙烧 冷却
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