[10p-S402-1~18] 12.7 Biomedical Engineering and Biochips

[10p-S402-12] Water absorption-driven biofuel flexible patch

〇Kenichi Tsukada¹, Asuka Yakuwa¹, Kohei Okuyama¹, Haoyu Zhang¹, Daisuke Inoue¹, Hiroya Abe², Matsuhiko Nishizawa¹ (1.Graduate School of Engineering, Tohoku Univ., 2.Frontier Research Institute for Interdisciplinary Sciences, Tohoku Univ.)

Keywords:biofuel cell

We report the development of a skin energizing patch that is highly flexible and adaptable to curved skin. An enzymatic biofuel cell is used as the driving source, which is quickly activated by supplying water. The conventional skin patch has a problem of long-term use due to evaporation of water from the oxygen supply window on the cathode. In this study, the stable power generation for a long time was achieved by covering an oxygen-permeable thin film onto the cathode to reduce that evaporation.