Modeling and in situ characterization of lithiation-induced stress in electrodes during the coupled mechano-electro-chemical process

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• 作者：Haimei Xie ; Qian Zhang ; Haibin Song ; Baoqin Shi ; Yilan Kang ; ^{tju_ylkang@tju.edu.cn}
• 关键词：Layered electrode ; Lithiation-induced stress ; Elastic modulus ; Si composite electrode
• 刊名：Journal of Power Sources
• 出版年：2017
• 出版时间：28 February 2017
• 年：2017
• 卷：342
• 期：Complete
• 页码：896-903
• 全文大小：1040 K
• 卷排序：342

文摘

A modified stress model considering Li content-dependent elastic modulus is built. In situ stress characterization of Si composite electrode in lithiation is proposed. The experimental results show that the stresses vary nonlinearly with Li content. The results show that softening of electrode material greatly relieves stresses.