阳极
容量损失
储能
插层(化学)
阴极
材料科学
电解质
电气化
降级(电信)
纳米技术
化学工程
环境科学
化学
电气工程
工程类
无机化学
热力学
功率(物理)
物理
电极
电
物理化学
作者
Nan Li,Jingyuan You,Ye Gao,Fahong Qiao,Yong Yang,Tao Jin,Chao Shen,Haitao Huang,Keyu Xie
出处
期刊:InfoMat
[Wiley]
日期:2023-02-03
卷期号:5 (5)
被引量:3
摘要
Abstract Promoting industry applications of high‐energy Li metal batteries (LMBs) is of vital importance for accelerating the electrification and decarbonization of our society. Unfortunately, the time‐dependent storage aging of Ah‐level Li metal pouch cells, a ubiquitous but crucial practical indicator, has not yet been revealed. Herein, we first report the storage behaviors and multilateral synergistic aging mechanism of Ah‐level NCM811||Li pouch cells during the 120‐day long‐term storage under various conditions. Contrary to the conventional belief of Li‐ion batteries with graphite intercalation anodes, the significant available capacity loss of 32.8% on average originates from the major electrolyte‐sensitive anode corrosion and partial superimposed cathode degradation, and the irreversible capacity loss of 13.3% is essentially attributed to the unrecoverable interface/structure deterioration of NCM with further hindrance of the aged Li. Moreover, principles of alleviating aging have been proposed. This work bridges academia and industry and enriches the fundamental epistemology of storage aging of LMBs, shedding light on realistic applications of high‐energy batteries. image
科研通智能强力驱动
Strongly Powered by AbleSci AI