Electrochemical impedance spectroscopy analysis for lithium-ion battery using Li4Ti5O12 anode

Tao Hang, Daikichi Mukoyama, Hiroki Nara, Norio Takami, Toshiyuki Momma*, Tetsuya Osaka

*この研究の対応する著者

研究成果: Article査読

78 被引用数 (Scopus)

抄録

The impedance of Li-ion battery using a Li4Ti5O12 (LTO) anode for high-power applications was measured at various depths of discharge and temperatures during chargeedischarge cycles. The measured impedance was interpreted with an equivalent circuit made up of anode and cathode, in which the cathode component was composed of two particle size factors. The values obtained for equivalent circuit elements by modeling were in good agreement with the results measured by other techniques, and indicated that the capacity fade of this Li-ion battery due to cycling is mainly caused by the increase of interfacial resistance and a decrease in the capacity of the LiCoO2 cathode. These results suggest that the cyclability of this LIB was improved by using an LTO anode, and show the validity of the equivalent circuit for interpreting the causes of capacity fade.

本文言語English
ページ(範囲)442-447
ページ数6
ジャーナルJournal of Power Sources
222
DOI
出版ステータスPublished - 2013 1月 15

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • エネルギー工学および電力技術
  • 物理化学および理論化学
  • 電子工学および電気工学

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