ID 12372
File
Authors
Kimura, Yuta Department of Chemistry and Biotechnology, Graduate School of Engineering and Center for Research on Green Sustainable Chemistry, Tottori University
Domi, Yasuhiro Department of Chemistry and Biotechnology, Graduate School of Engineering and Center for Research on Green Sustainable Chemistry, Tottori University Researchers DB KAKEN
Usui, Hiroyuki Department of Chemistry and Biotechnology, Graduate School of Engineering and Center for Research on Green Sustainable Chemistry, Tottori University Researchers DB KAKEN
Sakaguchi, Hiroki Department of Chemistry and Biotechnology, Graduate School of Engineering and Center for Research on Green Sustainable Chemistry, Tottori University Researchers DB KAKEN
Abstract
We have reported the effects of substituting a transition metal in silicide on the electrochemical performance of the silicide/Si composite anode for lithium-ion batteries (LIBs); the Cr0.5V0.5Si2/Si electrode exhibited much better cyclability compared with CrSi2/Si and VSi2/Si electrodes. Herein, we investigated the electrochemical performance of a CrxV1–xSi2/Si slurry electrode for its application in LIBs, and the results obtained were compared to those of a gas deposition (GD) electrode, which was comprised of only active materials. The slurry electrode exhibited a superior cycling life as with the GD electrode. After charge–discharge cycles, the expansion of the electrode thickness of CrSi2/Si and Cr0.5V0.5Si2/Si was smaller than that of VSi2/Si, and VSi2 was significantly pulverized compared with the other silicides. It is considered that VSi2 deformed easily by the stress from Si expansion and pulverized because the hardness of VSi2 was the smallest among the silicides used in this study. These results reveal that Cr0.5V0.5Si2/Si has great potential as an anode material for next-generation LIBs and hardness is an important property for compositing silicide with Si.
Publisher
American Chemical Society
Content Type
Journal Article
Link
ISSN
24701343
Journal Title
ACS OMEGA
Volume
6
Issue
13
Start Page
8862
End Page
8869
Published Date
2021-04-06
Publisher-DOI
Text Version
Publisher
Rights
(C) 2021 The Authors. Published by American Chemical Society
Citation
Kimura Yuta, Domi Yasuhiro, Usui Hiroyuki, et al. Anode Properties of CrxV1-xSi2/Si Composite Electrodes for LithiumIon Batteries. ACS OMEGA. 2021. 6(13). 8862-8869. doi:10.1021/acsomega.0c05986
Department
Faculty of Engineering/Graduate School of Engineering
Language
English
Web of Science Key ut
WOS:000638986700014