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对于离子电池的分层氧化物阴极的高压稳定性:挑战,进展和前景

Zhigao Chen^1,2, Yuyu Deng^1,2, Ji Kong^1,2

¹Key Laboratory of Advanced Energy Materials Chemistry, (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, 300071, China.

Advanced materials (Deerfield Beach, Fla.)

|March 21, 2024

概括

离子电池 (SIB) 提供具有成本效益的能量存储,但面临能量密度差距. 本综述详细介绍了高压层氧化物阴极 (LOC) 的挑战和解决方案,以提高SIB性能.

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:

离子电池 (SIB) 由于资源丰富和成本低,对大规模储能充满希望.
在SIB和离子电池 (LIB) 之间存在显著的能量密度差距,阻碍了实际应用.
高能阴极对于提高SIB能量密度至关重要,通常需要在高压区域运行.

研究的目的:

审查在高电压下分层氧化物阴极 (LOC) 的关键挑战和故障机制.
综合总结了改善LOC的高压稳定性的策略.
为推进高能SIB提供基本见解.

主要方法:

在高压层叠氧化物阴极的挑战的文献综述.
对故障机制的分析,包括相位过渡,离子迁移,氧气损失和界面反应.
综合策略,以提高LOCs的电化学稳定性.

主要成果:

层状氧化物阴极 (LOC) 面临诸如不可逆转的相变和高电压下阴离子溶解等问题.
界面寄生反应和反应氧的损失有助于性能降低.
存在各种策略来缓解这些问题并改善正极稳定性.

结论:

应对局部电路的高压挑战对于开发具有竞争力的SIB至关重要.
改进的阴极稳定性将使SIB能够弥合与LIBs的能量密度差距.
本综述提供了洞察力,以指导未来对高能SIB开发的研究.

关键词:

电极/电解质接口电极/电解质接口失效机制失效机制失效机制高电压的高电压的高电压层层的氧化物阴极是层层的氧化物阴极.在离子电池中使用.

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