Armoring lithium metal anode with soft-rigid gradient interphase toward high-capacity and long-life all-solid-state battery

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：Solid polymer electrolytes(SPEs)are highly promising for realizing high-capacity,low-cost,and safe Li metal batteries.However,the Li dendritic growth and side reactions between Li and SPEs also plague these systems.Herein,a fluorinated lithium salt coating(FC)with organic-inorganic 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 acid.The 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 batteries.The symmetric cell with FC-Li anodes exhibits a high areal capacity of 1 mAh cm-2 at 0.5 mA cm-2,and an ultra-long lifespan of 2000 h at a current density of 0.1 mA cm-2.Moreover,the full cell paired with the LiFePO4 cathode exhibits improved cycling stability,remaining 83.7%capacity after 500 cycles at 1 C.When matching with the S cathode,the FC layer can prevent the shuttle effect,contributing to stable and high-capacity Li-S battery.This work provided a promising way for the construction of stable all-solid-state lithium metal batteries with prolonged lifespan.

外文关键词：

All-solid-state batterySolid polymer electrolyteLi metal anodeLi nucleationInterface stability

作者：

Rui Zhang、Biao Chen、Yuhan Ma、Yue Li、Junwei Sha、Liying Ma、Chunsheng Shi、Naiqin Zhao

展开 >

作者单位：

School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials,Tianjin University,Tianjin,300350,China

Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Fuzhou,350207,China

Department of Chemical and Biomolecular Engineering,National University of Singapore,119077,Singapore

Collaborative Innovation Centre of Chemical Science and Engineering,Tianjin,300072,China

展开 >

基金：

国家自然科学基金

项目编号：

51772206

出版年：

2024

DOI：

10.1016/j.gee.2023.02.006

绿色能源与环境(英文)

CSTPCD

ISSN：

年,卷(期)：2024.9(8)