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中国物理学会期刊

全固态金属锂电池负极界面问题及解决策略

CSTR: 32037.14.aps.69.20201218

Anode interface in all-solid-state lithium-metal batteries: Challenges and strategies

CSTR: 32037.14.aps.69.20201218
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  • 全固态金属锂电池有望提高当前商用锂离子电池的安全性及能量密度, 被广泛认为是下一代电池的重要研发方向. 其中的负极-电解质界面与电池性能紧密相连. 本文将该界面存在的问题划分为静态及动态两方面, 静态问题包括化学不稳定及物理接触差, 体现在电池循环前的巨大阻抗, 动态问题包括枝晶生长及孔洞形成, 体现在电池循环过程性能的快速衰退. 本文就静态及动态问题的起因及其解决策略进行分析, 并对高性能全固态金属锂电池的设计策略作出展望.

     

    The developing of all-solid-state lithium-metal batteries promises to improve safety and energy density. The challenges in the anode|electrolyte interface are crucial and divided into static and dynamic issues in this review. The static issues are mainly shown as the huge resistances appearing in the assembled batteries, while the dynamic issues are reflected in the rapid deterioration of cycling performance. The static issues are mainly due to the poor chemical stability and interfacial contact, while dendrite growth and void formation are contained in the dynamic issues. Solving dynamic issues on the basis of static issues can conduce to the construction of stable all-solid-state lithium-metal batteries.

     

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