Armoring lithium metal anode with soft±rigid gradient interphase toward high-capacity and long-life all-solid-state battery
作者机构：School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional MaterialsTianjin University Joint School of National University of Singapore and Tianjin UniversityInternational Campus of Tianjin University Department of Chemical and Biomolecular EngineeringNational University of Singapore Collaborative Innovation Centre of Chemical Science and Engineering
出 版 物：《Green Energy & Environment》 (绿色能源与环境(英文))
年 卷 期：2024年第9卷第8期
页 面：1279-1289页
核心收录：
基 金：financial support by the National Natural Science Foundation of China (grant no. 51772206)
主 题：All-solid-state battery Solid polymer electrolyte Li metal anode Li nucleation Interface stability
摘 要：Solid polymer electrolytes （SPEs） are highly promising for realizing high-capacity,low-cost,and safe Li metal ***,the Li dendritic growth and side reactions between Li and SPEs also plague these ***,a fluorinated lithium salt coating （FC） with organicinorganic gradient and soft-rigid feature is introduced on Li surface as an artificial protective layer by the in-situ reaction between Li metal and fluorinated carboxylic *** FC layer can improve the interface stability and wettability between Li and SPEs,assist the transport of Li ions,and guide Li nucleation,contributing to a dendrite-free Li deposition and long-lifespan Li metal *** symmetric cell with FC-Li anodes exhibits a high areal capacity of 1 mAh cm-2at 0.5 mA cm-2,and an ultra-long lifespan of 2000 h at a current density of 0.1 m A ***,the full cell paired with the LiFePO4cathode exhibits improved cycling stability,remaining 83.7%capacity after 500 cycles at 1 *** matching with the S cathode,the FC layer can prevent the shuttle effect,contributing to stable and high-capacity Li-S *** work provided a promising way for the construction of stable all-solid-state lithium metal batteries with prolonged lifespan.
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