1. Department of Applied ChemistryGraduate School of Science and EngineeringEhime University 3 Bunkyo-cho Matsuyama 790-8577 Japan
2. Research Unit for Power Generation and Storage MaterialsEhime University 3 Bunkyo-cho Matsuyama 790-8577 Japan
3. Research Unit for Development of Organic SuperconductorsEhime University 2-5 Bunkyo-cho Matsuyama 790-8577 Japan
4. Research Institute of Electrochemical EnergyNational Institute of Advanced Industrial Science and Technology (AIST) 1-8-31 Midorigaoka Ikeda Osaka 563-8577 Japan