Stabilizing the oxide cathode/sulfide solid electrolyte interface via a novel polyaniline coating prepared by ball milling.
- Resource Type
- Article
- Authors
- Li, Zhu; Miao, Jiayu; Hu, Wen; Liu, Yanna; Li, Ming; Zhao, Menglong; Liu, Jinping; Xiao, Liang
- Source
- Chemical Communications. 5/7/2023, Vol. 59 Issue 37, p5627-5630. 4p.
- Subject
- *SOLID electrolytes
*LITHIUM cobalt oxide
*BALL mills
*POLYANILINES
*CATHODES
*SURFACE coatings
- Language
- ISSN
- 1359-7345
The thermodynamic instability of oxide cathode/sulfide solid electrolyte (SSE) interfaces leads to the large resistances of all-solid-state lithium-ion batteries (ASSLIBs). This work proposes a flexible polyaniline (PANI) coating instead of rigid lithium-containing oxides to stabilize the lithium cobalt oxide (LCO)/SSE interface. The PANI coating is prepared by a facile ball milling followed by annealing. Electrochemical tests demonstrated that the elastic PANI layer lowers and maintains the LCO/SSE interface resistance during cycling. Thus, the high capacity retention of 85.5% after 200 cycles was achieved for ASSLIBs with Li5.5PS4.5Cl1.5 electrolytes. [ABSTRACT FROM AUTHOR]