Citation: Shuai Chen, Chuang Yu, Shaoqing Chen, Linfeng Peng, Cong Liao, Chaochao Wei, Zhongkai Wu, Shijie Cheng, Jia Xie. Enabling ultrafast lithium-ion conductivity of Li₂ZrCl₆ by indium doping[J]. Chinese Chemical Letters, ;2022, 33(10): 4635-4639. doi: 10.1016/j.cclet.2021.12.048 shu

Enabling ultrafast lithium-ion conductivity of Li₂ZrCl₆ by indium doping

Shuai Chen ^{a, b} ,
Chuang Yu ^{a, *,} ,
Shaoqing Chen ^c ,
Linfeng Peng ^a ,
Cong Liao ^a ,
Chaochao Wei ^a ,
Zhongkai Wu ^a ,
Shijie Cheng ^a ,
Jia Xie ^{a, *,}

a.
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
b.
School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
c.
Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China

cyu2020@hust.edu.cn

xiejia@hust.edu.cn

Received Date: 30 September 2021
Revised Date: 7 December 2021
Accepted Date: 20 December 2021
Available Online: 24 December 2021

Figures(4)

Solid-state batteries with high energy density and safety are promising next-generation battery systems. However, lithium oxide and lithium sulfide electrolytes suffer low ionic conductivity and poor electrochemical stability, respectively. Lithium halide solid electrolyte shows high conductivity and good compatibility with the pristine high-voltage cathode but limited applications due to the high price of rare metal. Zr-based lithium halides with low cost and high stability possess great potential. Herein, a small amount of In³⁺ is introduced in Li₂ZrCl₆ to synthesize Li_2.25Zr_0.75In_0.25Cl₆ electrolytes with a high room temperature Li-ion conductivity of 1.08 mS/cm. Solid-state batteries using Li_2.25Zr_0.75In_0.25Cl₆/Li_5.5PS_4.5Cl_1.5 bilayer solid electrolytes combined with Li-In anode and pristine LiNi_0.7Mn_0.2Co_0.1O₂ cathode deliver high initial discharge capacities under different cut-off voltages. This work provides an effective strategy for enhancing the conductivity of Li₂ZrCl₆ electrolytes, promoting their applications in solid-state batteries.
- Solid electrolyte,
- Li₂ZrCl₆,
- Li-ion conductivity,
- In-doping,
- Solid-state battery
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Enabling ultrafast lithium-ion conductivity of Li2ZrCl6 by indium doping

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Enabling ultrafast lithium-ion conductivity of Li₂ZrCl₆ by indium doping