Ag/Br dual-doped Li6PS5Br electrolyte with superior conductivity for all-solid-state batteries

Jiang，Ziling1,2; Yu，Chuang1; Chen，Shaoqing3; Wei，Chaochao1; Liao，Cong1; Wu，Zhongkai1; Chen，Shuai1; Cheng，Shijie1; Xie，Jia1

2023-04-01

10.1016/j.scriptamat.2023.115303

SCRIPTA MATERIALIA   Impact Factor & Quartile

1359-6462

Lithium argyrodites electrolyte with high ionic conductivity and relatively lower cost show great potential as candidates for solid-state batteries. Further improvement of their conductivities can accelerate their applications. One of the means to significantly promote the conductivity of Li-ion is dual doping. Herein, Ag/Br dual-doping strategy is applied on LiPSBr (2.76 mS cm) to boast its conductivity to 6.15 mS cm for LiAgPSBr. The structural variations and chemical/electrochemical stability of the obtained electrolyte are carefully investigated. LiInCl electrolyte is introduced in the new battery configuration to mitigate the interfacial instability with LiNiMnCoO active material enabling good electrochemical performances. The assembled battery delivers a discharge capacity of 160.8 mAh g for the 1st cycle and maintains 85.9% of the initial value after 50 cycles at 0.5C. This modification strategy was proved effective for increasing the conductivity of sulfide electrolytes in this work.

Ag/Br dual-doping Ionic conductivity Li6PS5Br Solid electrolytes Solid-state batteries

English

Others

MATERIALS SCIENCE

2-s2.0-85146098582

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,Guangdong,518055,China

Jiang，Ziling,Yu，Chuang,Chen，Shaoqing,et al. Ag/Br dual-doped Li6PS5Br electrolyte with superior conductivity for all-solid-state batteries[J]. SCRIPTA MATERIALIA,2023,227.

Jiang，Ziling.,Yu，Chuang.,Chen，Shaoqing.,Wei，Chaochao.,Liao，Cong.,...&Xie，Jia.(2023).Ag/Br dual-doped Li6PS5Br electrolyte with superior conductivity for all-solid-state batteries.SCRIPTA MATERIALIA,227.

Jiang，Ziling,et al."Ag/Br dual-doped Li6PS5Br electrolyte with superior conductivity for all-solid-state batteries".SCRIPTA MATERIALIA 227(2023).