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大幅变形的电极中的化学应力:捕获的影响

Yong Li¹, He Huang², Kai Zhang³

¹School of Intelligent Manufacturing and Control Engineering, Shanghai Polytechnic University, Shanghai 201209, China.

|November 9, 2023

概括

被困在电池中会导致结构损坏和容量损失. 这项研究表明,不断被困的会增加压力,而不均的分布会减少压力,这有助于电池设计.

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
机械工程机械工程

背景情况:

陷使不动,在循环过程中降解电池结构.
这种降解会导致机械应力,容量损失和电池故障.
目前,有限的研究解决了陷在电池机械应力中的作用.

研究的目的:

分析捕获对机械应力和质量运输的贡献.
为了研究不同被困分布对电池性能的影响.

主要方法:

利用有限变形框架来建模机械应力和质量传输.
分析了两个脱化场景:恒定和不均的被捕度.

主要成果:

发现恒定度的被困会增加化学压力.
捕获的的不均分布被证明可以降低化学压力.

结论:

了解陷对机械应力的影响对于电池寿命至关重要.
这些发现为减轻陷和提高电池性能的策略提供了基础.

关键词:

电化学能量转换电化学能量转换电化学储能储能器是电化学储能器.电化学电化学电化学

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