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Influence of Cu2+doping concentration on the catalytic activity of CuXCo3-xO4for rechargeable Li-O2batteries
He, Lewei1,3; Wang, Youwei2; Wang, Fan1,3; Zhang, Sanpei1,3; Wu, Xiangwei1; Wen, Zhaoyin1; Liu, Jianjun2; Zhang, Wenqing2
2017
发表期刊Journal of Materials Chemistry A
ISSN20507488
卷号5期号:35页码:18569-18576
摘要The electrochemical performance of rechargeable lithium-oxygen (Li-O2) batteries relies on the catalysts used in the cathode to a great extent. Herein, a series of CuxCo3-xO4nanorods with different Cu2+concentrations was prepared by a convenient hydrothermal method. The corresponding structures and electrochemistries were further characterized in order to reveal the composition effect of catalyst on catalytic activity. Experimental characterization and theoretical calculations indicate that more Cu2+occupying Co2+positions and dispersing on the catalyst surface has an enhanced catalytic activity in terms of higher capacity, lower overpotential and better reversibility. This implies that suitable charge transfer from Li2O2to the catalyst plays an important role in improving the electrochemical performance of Li-O2batteries. The present study is helpful for designing a highly active catalyst by tuning the composition of the catalyst surface. © 2017 The Royal Society of Chemistry.
DOI10.1039/c7ta03615a
EI入藏号20173804181633
EI主题词Catalyst activity
EI分类号702.1.1 Primary Batteries - 761 Nanotechnology - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 933 Solid State Physics
引用统计
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25795
专题中国科学院上海硅酸盐研究所
作者单位1.CAS, Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai; 200050, China;
2.State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
3.University of Chinese Academy of Sciences, Beijing; 100049, China
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GB/T 7714
He, Lewei,Wang, Youwei,Wang, Fan,et al. Influence of Cu2+doping concentration on the catalytic activity of CuXCo3-xO4for rechargeable Li-O2batteries[J]. Journal of Materials Chemistry A,2017,5(35):18569-18576.
APA He, Lewei.,Wang, Youwei.,Wang, Fan.,Zhang, Sanpei.,Wu, Xiangwei.,...&Zhang, Wenqing.(2017).Influence of Cu2+doping concentration on the catalytic activity of CuXCo3-xO4for rechargeable Li-O2batteries.Journal of Materials Chemistry A,5(35),18569-18576.
MLA He, Lewei,et al."Influence of Cu2+doping concentration on the catalytic activity of CuXCo3-xO4for rechargeable Li-O2batteries".Journal of Materials Chemistry A 5.35(2017):18569-18576.
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