Realizing long-cycling all-solid-state Li-In||TiS 2 batteries using Li 6+x M x As 1-x S 5 I (M=Si, Sn) sulfide solid electrolytes

Inorganic sulfide solid-state electrolytes, especially Li PS X (X = Cl, Br, I), are considered viable materials for developing all-solid-state batteries because of their high ionic conductivity and low cost. However, this class of solid-state electrolytes suffers from structural and chemical instabi...

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Published inNature communications Vol. 14; no. 1; p. 4077
Main Authors Lu, Pushun, Xia, Yu, Sun, Guochen, Wu, Dengxu, Wu, Siyuan, Yan, Wenlin, Zhu, Xiang, Lu, Jiaze, Niu, Quanhai, Shi, Shaochen, Sha, Zhengju, Chen, Liquan, Li, Hong, Wu, Fan
Format Journal Article
LanguageEnglish
Published England 10.07.2023
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Summary:Inorganic sulfide solid-state electrolytes, especially Li PS X (X = Cl, Br, I), are considered viable materials for developing all-solid-state batteries because of their high ionic conductivity and low cost. However, this class of solid-state electrolytes suffers from structural and chemical instability in humid air environments and a lack of compatibility with layered oxide positive electrode active materials. To circumvent these issues, here, we propose Li M As S I (M=Si, Sn) as sulfide solid electrolytes. When the Li Si As S I (x = 0.8) is tested in combination with a Li-In negative electrode and Ti S-based positive electrode at 30 °C and 30 MPa, the Li-ion lab-scale Swagelok cells demonstrate long cycle life of almost 62500 cycles at 2.44 mA cm , decent power performance (up to 24.45 mA cm ) and areal capacity of 9.26 mAh cm at 0.53 mA cm .
ISSN:2041-1723