1. Venture Business Laboratory; Akita University; 1-1 Tegatagakuen-machi Akita 010-8502 Japan
2. CSIR-Central Electrochemical Research Institute; Karaikudi- 630006 India
3. Department of Earth Resource Engineering and Environmental Science, Graduate School of International Resource Sciences; Akita University; 1-1 Tegatagakuen-machi Akita 010-8502 Japan
4. Research Center for Engineering Science, Graduate School of Engineering Science; Akita University; 1-1 Tegatagakuen-machi Akita 010-8502 Japan