Chlorine-rich lithium argyrodites enables superior performances for solid-state Li-Se batteries at wide temperature range

Jin-Yan Lin; Shuai Chen; Jia-Yang Li; Dian Yu; Xiang-Ling Xu; Chuang Yu; Shao-Qing Chen; Xue-Fei Miao4; Lin-Feng Peng; Chao-Chao Wei; Chong-Xuan Liu; Shi-Jie Cheng; Jia Xie

2022

稀有金属（英文版）   Impact Factor & Quartile

1001-0521

All-solid-state Li-Se battery shows great potential as a candidate for next-generation energy storage devices due to its high energy density and safety.However,the low ionic conductivity of the solid electrolytes and large volume changes of Se active materials are two of the major issues that limit its applications.Herein,a simple solid-state reaction method is applied to synthesize chlo-rine-rich argyrodite Li5.5PS4.5Cl1.5 electrolyte with high conductivity of 6.25 mS·cm-1 at room temperature.Car-bon nanotube(CNT)is introduced as the host for Se to obtain Se/CNT composite with both enhanced electronic conductivity and lower volume expansion during the electrochemical reaction process.All-solid-state Li-Se battery using Li5.5PS4.5Cl1.5 as solid electrolyte combined with Se/CNT cathode and Li-In anode shows a discharge capacity of 866 mAh·g-1for the 2nd cycle under 0.433 mA·cm-2 at room temperature.Moreover,the assembled battery delivers a high discharge capacity of 1026 mAh·g-1 for the 2nd cycle when cycled at the same current density at 60℃and maintains a discharge capacity of 380 mAh·g-1 after 150 cycles.Owing to the high Li-ion conductivity of Li5.5PS4.5C11.5 electrolyte,the assembled battery displays a high discharge capacity of 344 mAh·g-1 under 0.113 mA.cm-2 at-20℃and remains 66.1％after 200 cycles.In addition,this all-solid-state Li-Se battery shows ultralong cycling performances up to 1000 cycles under 0.433 mA·cm-2 at-20℃.This work offers the design clue to fabricate the all-solid-state Li-Se battery workable at different operating temperatures with an ultralong cycling life.

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MATERIALS SCIENCE

WanFang

xyjs-e202212012

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 Materials,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
4.Key Laboratory of Advanced Metallic and Intermetallic Materials Technology,School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China
5.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China

Jin-Yan Lin,Shuai Chen,Jia-Yang Li,et al. Chlorine-rich lithium argyrodites enables superior performances for solid-state Li-Se batteries at wide temperature range[J]. 稀有金属（英文版）,2022,41(12):4065-4074.

Jin-Yan Lin.,Shuai Chen.,Jia-Yang Li.,Dian Yu.,Xiang-Ling Xu.,...&Jia Xie.(2022).Chlorine-rich lithium argyrodites enables superior performances for solid-state Li-Se batteries at wide temperature range.稀有金属（英文版）,41(12),4065-4074.

Jin-Yan Lin,et al."Chlorine-rich lithium argyrodites enables superior performances for solid-state Li-Se batteries at wide temperature range".稀有金属（英文版） 41.12(2022):4065-4074.