Development of impedance measurement of lithium ion batteries electrode using terahertz chemical microscope

Masashi Shimizu, Ryoji Yamanaka, Takashi Teranishi, Jin Wang, Kenji Sakai, Keiji Tsukada, Toshihiko Kiwa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In recent years, with the spread of electric vehicles, improvement in the performance of lithium ion batteries has been required. Evaluation of the active material is important because the performance of the lithium ion battery is affected by the movement of lithium ions at the electrode active material-electrolyte interface. In this study, we fabricated a lithium ion battery with the sensing plate, which is a potential sensor, attached to the positive electrode, and evaluated lithium ion battery with a terahertz chemical microscope (TCM). As a result, we succeeded in measuring the potential distribution of the positive electrode during charging and discharging, and the local impedance.

Original languageEnglish
Article numbere23355
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Volume214
Issue number4
DOIs
Publication statusPublished - Dec 2021

Keywords

  • impedance measurement
  • lithium ion battery
  • terahertz
  • terahertz chemical microscope

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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