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A Flexible Solid Electrolyte Interphase Layer for Long‐Life Lithium Metal Anodes
Author(s) -
Li NianWu,
Shi Yang,
Yin YaXia,
Zeng XianXiang,
Li JinYi,
Li CongJu,
Wan LiJun,
Wen Rui,
Guo YuGuo
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201710806
Subject(s) - anode , electrolyte , lithium metal , stripping (fiber) , polyacrylic acid , materials science , chemical engineering , interphase , metal , lithium (medication) , battery (electricity) , polymer , plating (geology) , nanotechnology , chemistry , composite material , electrode , metallurgy , medicine , biology , genetics , engineering , power (physics) , physics , quantum mechanics , geophysics , geology , endocrinology
Lithium (Li) metal is a promising anode material for high‐energy density batteries. However, the unstable and static solid electrolyte interphase (SEI) can be destroyed by the dynamic Li plating/stripping behavior on the Li anode surface, leading to side reactions and Li dendrites growth. Herein, we design a smart Li polyacrylic acid (LiPAA) SEI layer high elasticity to address the dynamic Li plating/stripping processes by self‐adapting interface regulation, which is demonstrated by in situ AFM. With the high binding ability and excellent stability of the LiPAA polymer, the smart SEI can significantly reduce the side reactions and improve battery safety markedly. Stable cycling of 700 h is achieved in the LiPAA‐Li/LiPAA‐Li symmetrical cell. The innovative strategy of self‐adapting SEI design is broadly applicable, providing opportunities for use in Li metal anodes