Kinetic Study of Parasitic Reactions in Lithium-Ion Batteries: A Case Study on LiNi0.6Mn0.2Co0.2O2

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• 作者：Xiaoqiao Zeng ; Gui-Liang Xu ; Yan Li ; Xiangyi Luo ; Filippo Maglia ; Christoph Bauer ; Simon Franz Lux ; Odysseas Paschos ; Sung-Jin Kim ; Peter Lamp ; Jun Lu ; Khalil Amine ; Zonghai Chen
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：February 10, 2016
• 年：2016
• 卷：8
• 期：5
• 页码：3446-3451
• 全文大小：428K
• ISSN：1944-8252

文摘

The side reactions between the electrode materials and the nonaqueous electrolytes have been the major contributor to the degradation of electrochemical performance of lithium-ion batteries. A home-built high-precision leakage current measuring system was deployed to investigate the reaction kinetics between the delithiated LiNi_0.6Mn_0.2Co_0.2O₂ and a conventional nonaqueous electrolyte. It was found that the rate of parasitic reaction had strong dependence on the upper cutoff potential of the cathode material. The kinetic data also indicated a change of reaction mode at about 4.5 V vs Li⁺/Li.