材料科学
电解质
丙烯酸酯
聚合物
化学工程
锂(药物)
单体
化学
电极
复合材料
医学
工程类
内分泌学
物理化学
作者
Hantao Xu,Chenghao Sun,Shu Zhang,Huanrui Zhang,Zhi Liu,Yue Tang,Guanglei Cui
出处
期刊:Chemsuschem
[Wiley]
日期:2023-04-03
卷期号:16 (11)
被引量:13
标识
DOI:10.1002/cssc.202202334
摘要
Lithium metal batteries are highly pursued for energy storage applications due to superior energy densities. However, fast battery decay accompanied by lithium dendrite growth occurs mainly owing to solid electrolyte interphase (SEI) failure. To address this, a novel functional quasi-solid-state polymer electrolyte is developed through in situ copolymerization of a cyclic carbonate-containing acrylate and a urea-based acrylate monomer in commercial available electrolyte. Based on the rigid-tough coupling design of SEI, anionic polymerization of cyclic carbonate units and reversible hydrogen bonding formed using urea motifs on the polymer matrix can take place at SEI. This mechanically stabilizes SEI and thus helps achieve uniform lithium deposition behaviors and non-dendrite growth. Thus, the superior cycling performance of LiNi0.6 Co0.2 Mn0.2 O2 /Li metal batteries is promoted by the formation of compatible SEI. This design philosophy to build mechanochemically stable SEI provides a good example for realizing advanced lithium metal batteries.
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