Sb and O dual doping of Chlorine-rich lithium argyrodite to improve air stability and lithium compatibility for all-solid-state batteries

Wei，Chaochao1,2; Yu，Chuang1; Wang，Ru1; Peng，Linfeng1; Chen，Shaoqing3; Miao，Xuefei4; Cheng，Shijie1; Xie，Jia1

2023-03-01

10.1016/j.jpowsour.2023.232659

JOURNAL OF POWER SOURCES   Impact Factor & Quartile

0378-7753

Chlorine-rich lithium argyrodites with ultrahigh ionic conductivity show great potential as solid electrolytes in all-solid-state batteries, while the poor moisture and lithium metal compatibility limit their applications. Here, by tailoring Sb and O dual dopant, LiPSbSOCl electrolyte delivers a high Li-ion conductivity up to 7.20 mS cm, excellent air/moisture and lithium metal endurance. The improved air stability is due to the strong Sb–S and P–O bonds in the co-doped electrolyte, inhibiting the reaction with water. While the enhanced lithium metal stability is attributed to the formation of the Li–Sb alloy layer, impeding the growth of lithium dendrites during cycling. The lithium symmetric cell using LiPSbSOCl exhibits high critical current density (1.5 mA cm) and ultralong cyclability (750 h, 0.1 mA cm). The all-solid-state lithium metal battery using LiNiMnCoO cathode affords a high initial discharge capacity of 144.2 mAh g at 0.1C. Moreover, the assembled battery shows a discharge capacity of 116.2 mAh g at 0.5C and a capacity retention rate of 83.2% after 200 cycles. This work provides the guideline to design sulfide solid electrolytes that enable all-solid-state lithium metal batteries with high energy density and long cyclability.

Air stability Chlorine-rich argyrodite Dual-doping Lithium compatibility Solid-state batteries

English

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MATERIALS SCIENCE

2-s2.0-85147101871

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
4.Key Laboratory of Advanced Metallic and Intermetallic Materials Technology,School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu,210094,China

Wei，Chaochao,Yu，Chuang,Wang，Ru,et al. Sb and O dual doping of Chlorine-rich lithium argyrodite to improve air stability and lithium compatibility for all-solid-state batteries[J]. JOURNAL OF POWER SOURCES,2023,559.

Wei，Chaochao.,Yu，Chuang.,Wang，Ru.,Peng，Linfeng.,Chen，Shaoqing.,...&Xie，Jia.(2023).Sb and O dual doping of Chlorine-rich lithium argyrodite to improve air stability and lithium compatibility for all-solid-state batteries.JOURNAL OF POWER SOURCES,559.

Wei，Chaochao,et al."Sb and O dual doping of Chlorine-rich lithium argyrodite to improve air stability and lithium compatibility for all-solid-state batteries".JOURNAL OF POWER SOURCES 559(2023).