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

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概要

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• 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.

著者

• Sone Yoshitsugu

  Japan Aerospace Exploration Agency

• Umeda Minoru

  Department Of Applied Chemistry Graduate School Of Engineering Tohoku University

• Mendoza Omar

  Department Of Materials Science And Technology Faculty Of Engineering Nagaoka University Of Technology

• Ishikawa Hiroaki

  Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan

• Maruyama Yuki

  Department of Electrical and Electronic Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan

• NISHIKAWA Yuuki

  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

• UMEDA Minoru

  Department of Materials Science and Technology, Faculty of Engineering, Nagaoka University of Technology

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