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自发应激释放阶段使高性能自愈阳极成为可能

Jiafeng Ruan¹, Shuxian Sun¹, Wei Zhou¹

¹College of Smart Materials and Future Energy, Fudan University, Shanghai, 200433, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|November 27, 2025

概括

具有自我愈合特性的液体金属阳极可以改善离子电池. 在Ga2Se3阳极中使用液体的新型应力释放阶段策略使裂纹修复成为可能,并增强了电化学稳定性.

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:

离子电池中的自我修复阳极对于长期稳定性至关重要.
自愈的精确机制,特别是关于压力演变的精确机制,需要进一步阐明.
液体金属为开发自愈电极材料提供了独特的特性.

研究的目的:

从应力演变的角度研究液体金属启用阳极的自我愈合机制.
为了证明一种自我衍生的释放压力阶段策略,用于增强储存.
为了评估化 (Ga2Se3) 作为自愈阳极材料的电化学性能.

主要方法:

理论计算以了解液体 (Ga) 的作用.
在现场进行X射线衍射 (XRD) 分析,观察循环过程中的结构变化.
在半个和全个离子电池电池中进行电化学性能测试.

主要成果:

液体Ga在Ga2Se3.3的转化反应中成功自我衍生了Ga2Se3.
由液体Ga诱导的单元细胞"呼吸"机制被确定为压力释放阶段.
Ga2Se3 阳极表现出极好的循环性能 (≈200 mAh g-1 在 10 A g-1 时) 和容量保留 (91.5% 在 150 个循环后).

结论:

自发应激释放阶段是实现电极自我愈合行为的关键.
在Ga2Se3中的液体Ga有效地治愈裂并减轻应变,确保长期稳定性.
这一策略为设计高性能离子电池阳极提供了一个新的范例.

关键词:

在Ga2Se3的阳极上.在现场 XRD 液体金属 Ga Ga 是一个液体金属.自愈机制的自愈机制压力释放阶段的压力释放阶段

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