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Ding, Feng
IBS - Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Theoretical methods development for materials studies.
  • The formation mechanism of various carbon materials, from fullerene to carbon nanotube and graphene.
  • Kinetics and thermodynamics of materials growth and etching.
  • The structure, properties and fundamentals of nanomaterials.
  • The experimental synthesis of carbon nanotubes.

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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
Zhao, JunZhao, ChaoZhu, JianpingLiu, XiangsiYao, JingmingWang, BoDai, QiushiWang, ZaifaChen, JingzhaoJia, PengLi, YanshuaiHarris, Stephen J.Yang, YongTang, YongfuZhang, LiqiangDing, FengHuang, Jianyu
Issue Date
2022-01
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.22, no.1, pp.411 - 418
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, chemo-mechanical 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 mu m, fracture/pulverization occurred; when the particle size is between 1 and 3 mu m, microcracks emerged; when the particle size is less than 1 mu m, 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 mu m the chemomechanical failure of LGPS SE can be mitigated.
URI
https://scholarworks.unist.ac.kr/handle/201301/56885
URL
https://pubs.acs.org/doi/10.1021/acs.nanolett.1c04076
DOI
10.1021/acs.nanolett.1c04076
ISSN
1530-6984
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