A Flexible Solid Electrolyte Interphase Layer for Long‐Life Lithium Metal Anodes |
| |
| Authors: | Dr Nian‐Wu Li Yang Shi Dr Ya‐Xia Yin Dr Xian‐Xiang Zeng Jin‐Yi Li Prof Cong‐Ju Li Prof Li‐Jun Wan Prof Rui Wen Prof Yu‐Guo Guo |
| |
| Institution: | 1. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, P. R. China;2. Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, China;3. University of Chinese Academy of Sciences, Beijing, P. R. China |
| |
| Abstract: | 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 |
| |
| Keywords: | in situ AFM lithium dendrites lithium ion batteries lithium metal anodes solid electrolyte interphase |
|
|
