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다차원 탄소재료 연구단
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Size-Dependent Chemomechanical Failure of Sulfide Solid Electrolyte Particles during Electrochemical Reaction with Lithium

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Title
Size-Dependent Chemomechanical Failure of Sulfide Solid Electrolyte Particles during Electrochemical Reaction with Lithium
Author(s)
Zhao, Jun; Chao Zhao; Zhu, Jianping; Liu, Xiangsi; Yao, Jingming; Wang, Bo; Dai, Qiushi; Wang, Zaifa; Chen, Jingzhao; Jia, Peng; Li, Yanshuai; Harris, Stephen J.; Yang, Yong; Tang, Yongfu; Zhang, Liqiang; Feng Ding; Huang, Jianyu
Publication Date
2022-01
Journal
Nano Letters, v.22, no.1, pp.411 - 418
Publisher
American Chemical Society (ACS)
Abstract
The very high ionic conductivity of Li10GeP2S12 (LGPS) solid electrolyte (SE) makes it a promising candidate SE for solid-state batteries in electrical vehicles. However, chemomechanical failure, whose mechanism remains unclear, has plagued its widespread applications. Here, we report in situ imaging lithiation-induced failure of LGPS SE. We revealed a strong size effect in the chemomechanical failure of LGPS particles: namely, when the particle size is greater than 3 μm, fracture/pulverization occurred; when the particle size is between 1 and 3 μm, microcracks emerged; when the particle size is less than 1 μm, no chemomechanical failure was observed. This strong size effect is interpreted by the interplay between elastic energy storage and dissipation. Our finding has important implications for the design of high-performance LGPS SE, for example, by reducing the particle size to less than 1 μm the chemomechanical failure of LGPS SE can be mitigated.
URI
https://pr.ibs.re.kr/handle/8788114/11744
DOI
10.1021/acs.nanolett.1c04076
ISSN
1530-6984
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
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