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原子级间歇策略,为长寿命的离子电池提供超稳定的子纳米通道

Peng Liu^1,2, Meijia Chen¹, Xue Ma¹

¹School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.

|February 19, 2026

概括

研究人员开发了一种使用金属离子交MXene的抗膨胀接口保护涂层 (IPC). 这一策略通过防止树岩的形成和材料的胀,提高了离子电池的稳定性和性能.

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
纳米技术纳米技术

背景情况:

二维材料被用作离子电池的接口保护涂层 (IPC),以确保均的Zn2+流并抑制树突的生长.
在/剥离周期期间,溶剂诱导的IPC膨胀导致材料破裂,阻碍了均的沉积.

研究的目的:

使用MXene开发一种具有稳定的亚纳米通道的抗膨胀接口保护涂层 (IPC).
研究原子级金属离子间隙对MXene结构和离子传输特性的影响.

主要方法:

采用原子级别的合策略,将金属离子插入到MXene层中,创建金属离子合的MXene膜 (M-MXMs).
基于Al3+-MXM的对称和不对称离子电池的结构特征和电化学性能测试.

主要成果:

3+-MXM仅具有0.5%的静态膨胀率,表现出优异的抗膨胀特性,有效地锁定了MXene结构.
Al3+-MXM@Zn对称电池实现了高离子迁移数 (0.75) 和2800小时的稳定循环.
所有3+-MXM@Zn-I2电池在10,000个循环后保持了83.5%的容量保留.

结论:

原子级金属离子间隔是一种有效的策略,用于创建稳定的离子电池的抗膨胀IPC.
3+-MXM显示出作为高性能和持久离子电池的保护层的巨大潜力.

关键词:

水性离子电池水性离子电池树枝状物抑制树枝状物抑制非常稳定的高度稳定.接口保护涂层是接口的保护涂层.离子传输通道的 Zn 离子传输通道

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