title: Stretchable biofuel cell with enzyme-modified conductive textiles.
abstract: A sheet-type, stretchable biofuel cell was developed by laminating three components: a bioanode textile for fructose oxidation, a hydrogel sheet containing fructose as fuel, and a gas-diffusion biocathode textile for oxygen reduction. The anode and cathode textiles were prepared by modifying carbon nanotube (CNT)-decorated stretchable textiles with fructose dehydrogenase (FDH) and bilirubin oxidase (BOD), respectively. Enzymatic reaction currents of anode and cathode textiles were stable for 30 cycles of 50% stretching, with initial loss of 20-30% in the first few cycles due to the partial breaking of the CNT network at the junction of textile fibers. The assembled laminate biofuel cell showed power of ~0.2 mW/cm(2) with 1.2 kΩ load, which was stable even at stretched, twisted, and wrapped forms.
authors.affiliation: Department of Bioengineering and Robotics, Tohoku University, 6-6-1 Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan.
authors.forename: Yudai
authors.initials: Y
authors.lastname: Ogawa
authors.affiliation: Department of Bioengineering and Robotics, Tohoku University, 6-6-1 Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Takai
authors.affiliation: Department of Bioengineering and Robotics, Tohoku University, 6-6-1 Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan.
authors.forename: Yuto
authors.initials: Y
authors.lastname: Kato
authors.affiliation: Department of Bioengineering and Robotics, Tohoku University, 6-6-1 Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kai
authors.affiliation: Department of Bioengineering and Robotics, Tohoku University, 6-6-1 Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan.
authors.forename: Takeo
authors.initials: T
authors.lastname: Miyake
authors.affiliation: Department of Bioengineering and Robotics, Tohoku University, 6-6-1 Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan. Electronic address: nishizawa@biomems.mech.tohoku.ac.jp.
authors.forename: Matsuhiko
authors.initials: M
authors.lastname: Nishizawa
mesh_terms: D001674:Bioelectric Energy Sources; D002237:Carbohydrate Dehydrogenases / Q000737:chemistry*; D055119:Elastic Modulus; D004553:Electric Conductivity; D004566:Electrodes; D004735:Energy Transfer; D004800:Enzymes, Immobilized / Q000737:chemistry; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005632:Fructose / Q000737:chemistry*; D044925:Oxidoreductases Acting on CH-CH Group Donors / Q000737:chemistry*; D013784:Textiles
chemical_list: D004800:Enzymes, Immobilized; D005632:Fructose; D002237:Carbohydrate Dehydrogenases; D044925:Oxidoreductases Acting on CH-CH Group Donors; C042401:bilirubin oxidase
keywords: Biofuel cell; Carbon nanotube; Stretchable