1. Laboratoire d'Electrochimie, CNRS URA 430, Université Pierre et Marie Curie, 75252 Paris, France
2. Department of Applied Chemistry, Faculty of Engineering, Iwate University, Ueda, Morioka, Japan 020
3. Division of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Sakyo‐ku, Kyoto, Japan 606‐01