Improved performance of LiMn0.8Fe0.2PO4 by addition of fluoroethylene carbonate electrolyte additive

Guihuang Fang ¹Wei Chen ²Hongwei Yang ²Haisheng Fang ²Chuang Yu ³Maoxiang Wu⁴

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作者信息

1. Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China
2. Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China
3. State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
4. Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China
折叠

Abstract

The addition of electrolyte additives is an effective strategy for tuning the property of the electrolyte to engineer the electrode/electrolyte interface,and there exist obvious discrepancies regarding the effect of fluoroethylene carbonate(FEC)as an electrolyte additive on the performance of cathodes.Herein FEC is introduced into the electrolyte of the LiMn0.8Fe0.2PO4/Li cell and its effect on the properties of the LiMn0.8Fe0.2PO4 is investigated.It is found that the addition of FEC in the electrolyte has a positive effect on the performance of the LiMn0.8Fe0.2PO4 cathode,which can be attributed to the reduced products gen-erated by the interfacial side-reactions on the LiMn0.8Fe0.2PO4 cathode surface and the decreased metal dissolution in the FEC-containing electrolyte,thanks to the higher oxidation resistance of FEC and the easier and stronger binding of FEC and PF6-.

Key words

Lithium-ion batteries/LiMn0.8Fe0.2PO4/Cathode/Electrolyte additives/Fluoroethylene carbonate

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基金项目

National Natural Science Foundation of China(51874155)

National Natural Science Foundation of China(52177214)

Fujian Provincial STS program supporting project of Chinese Academy of sciences(2022T3001)

出版年

2024

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCDCSCD

影响因子：0.771

ISSN：1001-8417

参考文献量46

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