In-situ acoustic emission study of sn anode in Li ion battery

Takehiro Fukushima, Syutaro Kato, Naoaki Kuwata, Junichi Kawamura

    Research output: Contribution to journalConference articlepeer-review

    2 Citations (Scopus)

    Abstract

    Acoustic emission (AE) technique is nondestructive and sensitive method by detecting ultrasonic elastic waves to evaluate degradation of Li ion batteries. The AE technique was applied to a half cell (Li/ LiPF6 (EC: DMC)/ Sn or SnO) during charge and discharge cycles. Solid electrolyte interphase (SEI) is formed by electrolyte decomposition with gas generation due to catalytic effect of Sn. The low frequency (20 ∼ 100 kHz) AE signals were detected and attributed to the gas generation due to electrolyte decomposition, which was confirmed by in-situ microscope observation. In our previous research, high frequency (100 ∼ 300 kHz) AE signals were detected due to crack formation during deintercalation process by using SnO thin film electrode. The AE signals of different origins were distinguished by specific frequencies of the AE signals. The AE technique is useful as a diagnostic tool for Li ion batteries.

    Original languageEnglish
    Pages (from-to)215-222
    Number of pages8
    JournalECS Transactions
    Volume62
    Issue number1
    DOIs
    Publication statusPublished - 2014 Jan 1
    Event17th International Meeting on Lithium Batteries, IMLB 2014 - Lake Como, Italy
    Duration: 2014 Jun 102014 Jun 14

    ASJC Scopus subject areas

    • Engineering(all)

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