电源技术2026，Vol.50Issue(4)：629-636,8.DOI:10.3969/j.issn.1002-087X.2026.04.06
MMDS对锰酸锂电池高温存储过程中容量衰减的影响
Influence of MMDS on capacity degradation of lithium manganese oxide batteries during high-temperature storage
何福俭 1齐敏杰 1王子秋 1孙翔宇 1杨丹丹 1常林荣2
作者信息
- 1. 超威电源集团有限公司,浙江 湖州 313100
- 2. 超威电源集团有限公司,浙江 湖州 313100||内蒙古自治区低空技术与工程重点实验室,内蒙古 呼和浩特 010051
- 折叠
摘要
Abstract
The effect of MMDS on capacity loss of lithium manganese oxide-graphite lithium ion pouch batteries during high-temperature storage was investigated using X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),inductively coupled plasma-atomic emission spectroscopy(ICP-AES),gas chromatography-mass spectrometry(GC-MS),and galvanostatic charge-discharge methods in electrochemical testing systems.The capacity loss of batteries in the experimental group after high temperature storage was 2.92%less than that of batteries in the comparison group.MMDS could inhibit the capacity loss of batteries in the high-temperature storage test.The decline in special capacity of lithium manganese oxide and graphite of the experimental group before and after the storage test was as same as that of batteries in the comparison group.The mechanism of capacity loss was the reduction of active lithium.The active lithium was mainly converted into inactive lithium by side reactions at the anode interface.The XPS analysis results show that MMDS decomposes to form R-SO3-Li and Li2SO3 on the anode interface,which inhibits the decomposition of EC.The ξanode(extent of reaction)of side reaction occurring on anode sheets is reduced from 0.053 4 mol to 0.039 7 mol,which inhibits the capacity loss in the high-temperature storage test of the battery.关键词
锰酸锂-石墨锂离子电池/MMDS/非活性锂/副反应Key words
lithium manganese oxide-graphite lithium-ion battery/MMDS/inactive lithium side reaction分类
信息技术与安全科学引用本文复制引用
何福俭,齐敏杰,王子秋,孙翔宇,杨丹丹,常林荣..MMDS对锰酸锂电池高温存储过程中容量衰减的影响[J].电源技术,2026,50(4):629-636,8.
