A dual-halogen electrolyte for protective-layer-free all-solid-state lithium batteries

Tang，Wen1,2,3; Xia，Wei1,2; Hussain，Fiaz1; Zhu，Jinlong2,4; Han，Songbai2; Yin，Wen5; Yu，Pengcheng4; Lei，Jiuwei4; Butenko，Denys S.2; Wang，Liping2; Zhao，Yusheng1,2,4

2023-06-01

10.1016/j.jpowsour.2023.232992

Journal of Power Sources   Impact Factor & Quartile

0378-7753

Halide-type solid electrolytes (SEs) have emerged as a new class of promising Li conductors due to their high ionic conductivity, good deformability and excellent oxidation stability. Nevertheless, to move a step closer to the application in all-solid-state lithium batteries (ASSLBs), the poor compatibility against metal anode for halide SEs needs to be addressed. Herein, a dual-halogen trigonal SE, LiZrClF is developed. With the proper incorporation of F, the SE can maintain high ionic conductivity and considerable moisture stability. Moreover, protective-layer-free ASSLBs prepared from the single SE and high-voltage cathode materials LiCoO can be reversibly cycled in the voltage window of 2.52–4.32 V (versus Li/Li) with a high initial coulombic efficiency of 95.57%, and maintain 76% of the initial capacity after 70 cycles. The good electrochemical performance is originated from the in-situ formed interface protective layer between SE and Li alloy, as demonstrated by X-ray photoelectron spectroscopy and computational characterizations. This work indicates that developing mixed halogen-based SEs is a cost-effective way to improve the stability of halide SEs against alkali metal anode, and could accelerate the application for high-voltage ASSLBs.

All-solid-state battery Electrode compatibility Halide electrolyte Protective-layer-free

English

Corresponding

National Natural Science Foundation of China[12275119];National Natural Science Foundation of China[51902150];

MATERIALS SCIENCE

2-s2.0-85151029661

Scopus

1.Eastern Institute for Advanced Study,Ningbo,315200,China
2.Guangdong Provincial Key Laboratory of Energy Materials for Electric Power,Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
3.Department of Chemical Engineering,Shanghai Jiao Tong University,Shanghai,200240,China
4.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
5.Institute of High Energy Physics,Chinese Academy of Sciences (CAS),Beijing,100049,China

Tang，Wen,Xia，Wei,Hussain，Fiaz,et al. A dual-halogen electrolyte for protective-layer-free all-solid-state lithium batteries[J]. Journal of Power Sources,2023,568.

Tang，Wen.,Xia，Wei.,Hussain，Fiaz.,Zhu，Jinlong.,Han，Songbai.,...&Zhao，Yusheng.(2023).A dual-halogen electrolyte for protective-layer-free all-solid-state lithium batteries.Journal of Power Sources,568.

Tang，Wen,et al."A dual-halogen electrolyte for protective-layer-free all-solid-state lithium batteries".Journal of Power Sources 568(2023).