Totally organic electrical skin patch powered by flexible biobattery

Shotaro Yoshida, Hiroya Abe, Yuina Abe, Shinya Kusama, Kenichi Tsukada, Ryo Komatsubara, Matsuhiko Nishizawa

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


An electrical skin patch that can be flexibly attached to the skin and activated in 30 s by adding water was developed by integrating a built-in flexible glucose/O2 biobattery. The latter consisted of a glucose dehydrogenase (GDH)-modified anode and an iron(II) phthalocyanine (FePc)-modified cathode. The quick activation of the patch components by water addition deep inside the patch was achieved by using a flexible water-absorbing sponge containing glucose and buffer electrolyte. A patch current of about 10 ìA was maintained for more than 12 h by optimizing the amount of glucose and electrolyte contained in the sponge tank. The entire patch was soft and highly flexible to conform to curved skin surfaces, owing to its thinness (<2 mm) and the flexibility of all the patch components, including the enzyme electrodes based on the carbon fabric.

Original languageEnglish
Article number044004
JournalJPhys Energy
Issue number4
Publication statusPublished - 2020 Oct


  • Biobattery
  • Iontophoresis
  • Skin patch
  • Transdermal current


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