Chronopotentiometric Investigation of Anode Deterioration in Lithium Ion Secondary Cell Incorporating Reference Electrode

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  • ISHIKAWA Hiroaki
    Department of Materials Science and Technology, Faculty of Engineering, Nagaoka University of Technology Industrial Technology Institute of Ibaraki Prefecture
  • NISHIKAWA Yuuki
    Department of Materials Science and Technology, Faculty of Engineering, Nagaoka University of Technology
  • MENDOZA Omar
    Department of Materials Science and Technology, Faculty of Engineering, Nagaoka University of Technology
  • MARUYAMA Yuki
    Department of Materials Science and Technology, Faculty of Engineering, Nagaoka University of Technology
  • SONE Yoshitsugu
    Japan Aerospace Exploration Agency
  • UMEDA Minoru
    Department of Materials Science and Technology, Faculty of Engineering, Nagaoka University of Technology

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抄録

We were able to derive the dQ/dE vs. E curve by carrying out chronopotentiometric measurements using a lithium ion secondary cell incorporating a reference electrode. These in-situ measurements were found to be comparable to the ex-situ measurements, which were obtained using a graphite single particle method. The dQ/dE vs. E curves for the anode of the same type of cells, which contain storage deterioration and cyclic test deterioration data, were then obtained. As a result, an over potential increase in the charge and discharge peaks, as well as a decrease in the charge coulombs was observed. As a result of the dQ/dE vs. E curves of the anode of degraded lithium ion secondary cells incorporating a reference electrode, we were able to evaluate the graphite degradation under conditions close to real environmental conditions.

収録刊行物

  • Electrochemistry

    Electrochemistry 80 (10), 762-764, 2012

    公益社団法人　電気化学会

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