Distinction of impedance responses of Li-ion batteries for individual electrodes using symmetric cells

研究成果: Article査読

31 被引用数 (Scopus)

抄録

Symmetric cells were prepared with a newly designed separable cell module, which enabled ca. 70 mm by 70 mm electrode sheets to be used for a pouch type 5 Ah class Li-ion battery (LIB). Impedance analysis of the LIB as a full cell state was successfully performed with electrochemical parameters obtained by an impedance analysis of symmetric cells of anodes and cathodes obtained from the operated Li-ion batteries. While the charge transfer resistance of the cathode was found to increase after reassembling the cells symmetrically, other electrochemical parameters were found not to change when comparing the values obtained for full cells with symmetric cells. Eelectrodes degraded by charge/discharge cycling of the battery were also investigated, and the parameter change caused by the degradation was confirmed.

本文言語English
ページ(範囲)195-201
ページ数7
ジャーナルElectrochimica Acta
131
DOI
出版ステータスPublished - 2014 6 10

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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