Issue 48, 2020

High-rate cathode CrSSe based on anion reactions for lithium-ion batteries

Abstract

Studies of transition metal dichalcogenides (TMDs) can be traced back to the 1970s but they have been abandoned for a while due to the fire hazard of lithium metal batteries. Herein, a new layered material, CrSSe, is reported, whose intercalative capacity can achieve 190 mA h gāˆ’1 with charges all compensated by anionic S and Se. Fascinating performances of half-cells are also presented, with a capacity retention rate of 81.5% upon 1000 cycles at 20C and a high output of 101.7 mA h gāˆ’1 even at 200C. In addition, an ideal way to build a type of full battery without lithium anodes for CrSSe is also displayed; a Li3N film was synthesized on the electrode surface as a lithium source. Overall, the discovery of CrSSe enriches the chemistry of TMDs and the application in full batteries opens up opportunities for enabling lithium-free cathodes to be widely utilized in practical applications.

Graphical abstract: High-rate cathode CrSSe based on anion reactions for lithium-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
15 Aug 2020
Accepted
06 Nov 2020
First published
09 Nov 2020

J. Mater. Chem. A, 2020,8, 25739-25745

Author version available

High-rate cathode CrSSe based on anion reactions for lithium-ion batteries

S. Yang, D. Shi, T. Wang, X. Yue, L. Zheng, Q. Zhang, L. Gu, X. Yang, Z. Shadike, H. Li and Z. Fu, J. Mater. Chem. A, 2020, 8, 25739 DOI: 10.1039/D0TA08012H

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