Revealing performance of 78Li2S-22P2S5 glass ceramic based solid-state batteries at different operating temperatures

Wei，Chaochao1,2; Liu，Xinrong1; Yu，Chuang1; Chen，Shaoqing3; Chen，Shuai1; Cheng，Shijie1; Xie，Jia1

2023-07-01

10.1016/j.cclet.2022.107859

Chinese Chemical Letters   影响因子和分区

1001-8417

1878-5964

78LiS-22PS are sulfide electrolytes with high lithium-ion conductivity and wide electrochemical windows in the LiS-PS system, making them attractive solid electrolytes for ASSLBs. However, the role and potential of 78LiS-22PS solid electrolytes over a wide temperature range are still not fully understood. Therefore, we constructed solid-state batteries with NCM622 as the positive electrode and 78LiS-22PS glass-ceramics as the electrolyte to investigate in depth the differences in battery performance over a wide temperature range and their intrinsic mechanisms. The in-situ impedance and relaxation time distribution (DRT) demonstrated the electrochemical stability of the electrolyte over a wide temperature range, while the in-situ stacking pressure observed a large volume change during cycling at 60 °C, leading to local solid-solid contact failure and poor cycling stability. This study provides insight into the advantages and problems of 78LiS-22PS in the wide temperature range as well as a basis for the construction of ASSLBs with high energy density and long cycle life.

78Li2S-22P2S5 electrolytes Battery performance Interfacial resistance Li-ion conductivity Operating temperature Volume changes

SCI

英语

其他

National Key Research and Development Program of China[2021YFB2400300];National Natural Science Foundation of China[52177214];

Chemistry

Chemistry, Multidisciplinary

WOS:001008776800001

ELSEVIER SCIENCE INC

CHEMISTRY

2-s2.0-85159207289

Scopus

1.State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan,430074,China
2.School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan,430074,China
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Wei，Chaochao,Liu，Xinrong,Yu，Chuang,et al. Revealing performance of 78Li2S-22P2S5 glass ceramic based solid-state batteries at different operating temperatures[J]. Chinese Chemical Letters,2023,34(7).

Wei，Chaochao.,Liu，Xinrong.,Yu，Chuang.,Chen，Shaoqing.,Chen，Shuai.,...&Xie，Jia.(2023).Revealing performance of 78Li2S-22P2S5 glass ceramic based solid-state batteries at different operating temperatures.Chinese Chemical Letters,34(7).

Wei，Chaochao,et al."Revealing performance of 78Li2S-22P2S5 glass ceramic based solid-state batteries at different operating temperatures".Chinese Chemical Letters 34.7(2023).