阴极
材料科学
降级(电信)
背景(考古学)
耐久性
电化学
可靠性(半导体)
联轴节(管道)
工程物理
纳米技术
工艺工程
计算机科学
功率(物理)
冶金
电气工程
复合材料
电极
工程类
化学
电信
物理
古生物学
物理化学
量子力学
生物
作者
Qingrong Huang,Xiaodong Zhang,Feng Wu,Renjie Chen,Li Li
标识
DOI:10.1016/j.ensm.2023.103050
摘要
Ni-rich cathode materials have recently received phenomenal attention owing to their high energy density and cost-effective nature. Up to now, Li-ion batteries (LIBs) based on Ni-rich layered cathode have been widely used as power source in electric vehicles (EVs). However, Ni-rich cathode materials suffer from serious capacity fading during electrochemical operation and this phenomenon becomes more obvious with the increase of Ni content. The relatively inferior reliability and durability of Ni-rich cathodes lead to some safety hazards and hinder their industrialization. In this context, a great deal of attentions in materials surface/interface chemistries and structure evolution under multiple physicochemical fields operating conditions has been paid to better understand the degradation mechanisms. This article analyzed the origin of multiple fields during operating condition and systematically reviewed the reported failure pathways under different physicochemical fields, providing a detailed understanding on degradation mechanisms of Ni-rich cathodes. Induced degradation pathways from multiple fields coupling lead to further performance degradation, which in turn intensifies the coupling of physicochemical fields. Such a negative feedback loop is believed to responsible for the fast capacity fading of Ni-rich cathode materials. Finally, some insightful future perspectives are also proposed to help further encourage the industrialization of Ni-rich cathodes.
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