Electrochemical degradation caused by mechanical damage in silicon negative electrodes

N. Yoshida, T. Sakamoto, N. Kuwata, J. Kawamura, K. Sato, T. Hashida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Silicon is a promising anode material for lithium ion batteries application due to its high electrochemical capacity. Unfortunately, silicon undergoes a volume expansion of 300∼400% under the full lithiation condition and suffers from severe capacity fade, which limits its successful application in commercial cells. In this study, we used in situ acoustic emission method for detecting mechanical damage in the silicon electrode. The present study revealed the mechanism of degradation in a silicon electrode of the lithium ion batteries. It was shown that the long-term performance of silicon electrode was dictated by its spallation during the discharge processes. This study demonstrated that the AE method developed was a powerful tool to examine the mechanical damage and electrochemical degradation in lithium ion battery electrodes.

Original languageEnglish
Title of host publicationLi-Ion Batteries
EditorsR. Kostecki, D. Guyomard, G. Koenig, M. Winter, Christopher Johnson, Y. Cui, Y. Zhang, Y. Fukunaka
PublisherElectrochemical Society Inc.
Pages31-37
Number of pages7
Edition20
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2016 Jan 1
EventLi-Ion Batteries A03 Battery Symposium - PRiME 2016/230th ECS Meeting - Honolulu, United States
Duration: 2016 Oct 22016 Oct 7

Publication series

NameECS Transactions
Number20
Volume75
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Other

OtherLi-Ion Batteries A03 Battery Symposium - PRiME 2016/230th ECS Meeting
CountryUnited States
CityHonolulu
Period16/10/216/10/7

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Yoshida, N., Sakamoto, T., Kuwata, N., Kawamura, J., Sato, K., & Hashida, T. (2016). Electrochemical degradation caused by mechanical damage in silicon negative electrodes. In R. Kostecki, D. Guyomard, G. Koenig, M. Winter, C. Johnson, Y. Cui, Y. Zhang, & Y. Fukunaka (Eds.), Li-Ion Batteries (20 ed., pp. 31-37). (ECS Transactions; Vol. 75, No. 20). Electrochemical Society Inc.. https://doi.org/10.1149/07520.0031ecst