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解码高压LiCoO₂:从降解到稳定到耐用离子电池

Zezhou Lin^1,2, Yiran Ying¹, Huangxu Li¹

¹Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China.

Advanced materials (Deerfield Beach, Fla.)

|February 18, 2026

概括

使用氧化 (LCO) 阴极的离子电池 (LIB) 的高压运行是提高能量密度的关键. 本综述探讨了LCO故障机制和持久高能LIB稳定策略.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
储能储能储能储能储能储能

背景情况:

带有氧化 (LCO) 阴极的离子电池 (LIB) 对便携式电子设备至关重要.
提高能量密度对于先进的智能设备至关重要,通常需要更高的操作电压.
将切断充电电压提高到4.6V以上可以提高容量,但会严重降低LCO.

研究的目的:

为了突出现代LIB中对高压阴极的需求.
为了研究高电压 (高达4.6V) 的LCO阴极的故障机制.
系统地评估稳定高压LCO和提高电化学性能的策略.

主要方法:

关于高电压下LCO故障机制的文献综述.
分析各种稳定技术,包括外离子兴奋剂,表面改造和结构设计.
讨论电解质添加剂和基于LCO的系统的创新全细胞设计.

主要成果:

高压运行LCO导致显著的材料降解和电池故障.
稳定策略,如兴奋剂,表面涂料和电解质添加剂可以减轻降解.
优化的电池设计和修改显示了提高LCO性能的希望.

结论:

解决LCO退化对于实现高能耗,持久的LIBs至关重要.
对于先进的高压阴极材料,需要进一步研究合理的设计和修改策略.
本综述为开发下一代高压LIB提供了指导原则.

关键词:

电极制造业电极制造业电极制造业高压阴极高压电极是高压电极.工业化的挑战工业化的挑战离子电池离子电池修改战略的改变策略.

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