Improving charge/discharge properties of radical polymer electrodes influenced strongly by current collector/carbon fiber interface

Sunao Yoshihara, Hiroshi Isozumi, Masanori Kasai, Hisatomo Yonehara, Yuko Ando, Kenichi Oyaizu, Hiroyuki Nishide*

*この研究の対応する著者

研究成果: Article査読

48 被引用数 (Scopus)

抄録

Charge/discharge processes of organic radical batteries based on the radical polymer's redox reaction are largely influenced by carbon fibers consisting in the composite electrodes to help electron transfer. To find the optimal structure of the composite electrodes, the dominant electron transfer processes were determined by ac impedance measurement of the composite electrodes. A strong correlation between the overall electron transfer resistance of the composite electrodes and the materials of the current collector suggests that the electric conduction to the current collector through the contact resistance should be crucial. It was also confirmed that the charge/discharge performance of the composite electrode was related to the overall electron transfer resistance of the composite electrode. These results indicated that the charge/discharge performance of the radical battery was dominated by the interfacial electron transfer processes at the current collector/carbon fiber interface and that the rate performance would be much improved by suitably designing the interfacial structure.

本文言語English
ページ(範囲)8335-8340
ページ数6
ジャーナルJournal of Physical Chemistry B
114
25
DOI
出版ステータスPublished - 2010 7月 1

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 表面、皮膜および薄膜
  • 材料化学

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