Lithium Hexamethyldisilazide Endows Li||NCM811 Battery with Superior Performance

Nano-Micro Letters

Highlights

Yanxia Liu¹  Yaxiong Yang¹  Jianmin Ma²  Junda Huang³ 

[1] Institute of Science and Technology for New Energy, Xi’an Technological University, 710021, Xi’an, People’s Republic of China;School of Chemistry, Tiangong University, 300387, Tianjin, People’s Republic of China;School of Chemistry, Tiangong University, 300387, Tianjin, People’s Republic of China;School of Physics and Electronics, Hunan University, 410082, Changsha, People’s Republic of China;

关键词: Lithium metal battery;    Electrolyte additive;    Cathode electrolyte interphase;    Lithium hexamethyldisilazide;    Cycling performance;   

DOI  :  10.1007/s40820-022-00998-z

 received in 2022-11-21, accepted in 2022-12-02,  发布年份 2022

来源: Springer

【 摘 要 】

The construction of stable cathode electrolyte interphase (CEI) is the key to improve the NCM811 particle structure and interfacial stability via electrolyte engineering. In He’s work, lithium hexamethyldisilazide (LiHMDS) as the electrolyte additive is proposed to facilitate the generation of stable CEI on NCM811 cathode surface and eliminate H2O and HF in the electrolyte at the same time, which boosts the cycling performance of Li||NCM811 battery up to 1000 or 500 cycles with 4.5 V cut-off voltage at 25 or 60 °C.

【 授权许可】

CC BY   
© The Author(s) 2023