Oxygen Reactions in a Non-Aqueous Li+ Electrolyte

被引:526
作者
Peng, Zhangquan [1 ]
Freunberger, Stefan A. [1 ]
Hardwick, Laurence J. [1 ]
Chen, Yuhui [1 ]
Giordani, Vincent [1 ,2 ]
Barde, Fanny [3 ]
Novak, Petr [4 ]
Graham, Duncan [5 ]
Tarascon, Jean-Marie [2 ]
Bruce, Peter G. [1 ]
机构
[1] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland
[2] Univ Picardie Jules Verne, Lab React & Chim Solides, UMR 6007, F-80039 Amiens, France
[3] Toyota Motor Europe, Ctr Tech, B-1930 Zaventem, Belgium
[4] Paul Scherrer Inst, Electrochem Lab, CH-5232 Villigen, Switzerland
[5] Univ Strathclyde, Dept Pure & Appl Chem, Glasgow G1 1XL, Lanark, Scotland
基金
英国工程与自然科学研究理事会;
关键词
electrochemistry; lithium batteries; oxygen; reduction; surface enhanced Raman spectroscopy; TEMPERATURE IONIC LIQUIDS; AIR BATTERIES; LITHIUM; ELECTROREDUCTION; RAMAN; O-2; ELECTROCHEMISTRY; REDUCTION; CATALYST; SPECTRA;
D O I
10.1002/anie.201100879
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Taking the shortcut: Spectroscopic data (see picture) provide direct evidence that in non-aqueous Li+ electrolyte, O2 is reduced to O2-, which then forms LiO2 on the electrode surface which disproportionates to Li2O2. On charging, Li2O2 decomposes directly, in a one-step reaction to evolve O2 and does not pass through LiO2 as an intermediate. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:6351 / 6355
页数:5
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