双模EPR法研究LiCoO2的电化学循环

Magnetic Resonance Letters Pub Date : 2023-02-01 DOI:10.1016/j.mrl.2022.04.002

Bei Hu, Fushan Geng, Ming Shen, Bingwen Hu

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引用次数: 1

摘要

采用双模电子顺磁共振(EPR)谱分析了锂钴氧化物LiCoO2 (LCO)正极材料在锂化和锂化过程中的氧化还原机理。在循环过程中，O3-II不能完全转化回原始的O3-I相，而氧空位的产生和积累很快。我们的研究为今后更好地理解不同元素对LiCoO2掺杂的影响奠定了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

The study of electrochemical cycle for LiCoO2 by dual-mode EPR

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The study of electrochemical cycle for LiCoO2 by dual-mode EPR

Dual-mode electron paramagnetic resonance (EPR) spectroscopy was employed to analyze redox mechanisms in lithium cobalt oxide LiCoO₂ (LCO) cathode material during delithiation and lithiation. It was found that the O3-II could not fully convert back to the pristine O3–I phase while oxygen vacancies quickly generate and accumulate during the cycling. Our study paves the way for better understanding the doping effects of different elements on LiCoO₂ in the future.

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来源期刊

Magnetic Resonance Letters Analytical Chemistry, Spectroscopy, Radiology and Imaging, Biochemistry, Genetics and Molecular Biology (General)

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