Fast Li-ion Conductor of Li<sub>3</sub>HoBr<sub>6</sub> for Stable All-Solid-State Lithium-Sulfur Battery.

Shi, Xiaomeng; Zeng, Zhichao; Sun, Mingzi; Huang, Bolong; Zhang, Hongtu; Luo, Wei; Huang, Yunhui; Du, Yaping; Yan, Chunhua

Fast Li-ion Conductor of Li₃HoBr₆ for Stable All-Solid-State Lithium-Sulfur Battery.

Shi, Xiaomeng; Zeng, Zhichao; Sun, Mingzi; Huang, Bolong; Zhang, Hongtu; Luo, Wei; Huang, Yunhui; Du, Yaping; Yan, Chunhua.

Affiliation

Shi X; Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, People's Republic of China.
Zeng Z; Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, People's Republic of China.
Sun M; Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR 999077, People's Republic of China.
Huang B; Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR 999077, People's Republic of China.
Zhang H; Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, People's Republic of China.
Luo W; Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai 201804, People's Republic of China.
Huang Y; Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai 201804, People's Republic of China.
Du Y; Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, People's Republic of China.
Yan C; Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, People's Republic of China.

Nano Lett ; 21(21): 9325-9331, 2021 Nov 10.

Article in En | MEDLINE | ID: mdl-34677073

ABSTRACT

Rare-earth (RE) solid-state halide electrolytes have been extensively studied recently in the field of lithium (Li) ion all-solid-state batteries (ASSBs) due to their excellent electrochemical performances. Herein, a new RE-based solid halide electrolyte Li3HoBr6 (LHB) has been synthesized and exhibits high Li ion conductivity up to mS cm-1 at room temperature. Theoretical calculations have identified four different Li ion migration pathways, in which the out-of-plane pathways are much more favorable than the direct in-plane pathways. In addition, LHB has a wider electrochemical window in comparison to a sulfide solid electrolyte and good deformability. The LHB-based Li-sulfur ASSB assembled by cold pressing can exhibit good cycling stability with high Coulombic efficiency, which shows that LHB has potential application in ASSBs.

Key words

Li3HoBr6; Lithium−Sulfur Battery; Out-of-Plane Diffusion; Rare Earth; Solid Halide Electrolyte

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