Flexible, layered biofuel cells

Takeo Miyake, Keigo Haneda, Syuhei Yoshino, Matsuhiko Nishizawa

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

Similar to conventional electrolyte batteries, biofuel cells often need to be stacked in order to boost their single cell voltage (<1V) up to a practical level. Here, we report a laminated stack of biofuel cells that is composed of bioanode fabrics for fructose oxidation, hydrogel sheets containing electrolyte and fuel (fructose), and O2-diffusion biocathode fabrics. The anode and cathode fabrics were prepared by modifying fructose dehydrogenase and bilirubin oxidase, respectively, on carbon nanotubes-decorated carbon fiber fabrics. The total thickness of the single set of anode/gel/cathode sheets is just 1.1mm. The laminated triple-layer stack produces an open-circuit voltage of 2.09V, which is a 2.8-fold increase over that of a single set cell (0.74V). The present layered cell (5mm×5mm) produces a maximum power of 0.64mW at 1.21V, a level that is sufficient to drive light-emitting diodes.

Original languageEnglish
Pages (from-to)45-49
Number of pages5
JournalBiosensors and Bioelectronics
Volume40
Issue number1
DOIs
Publication statusPublished - 2013 Feb 15

Keywords

  • Biofuel cell
  • Carbon fabric bioelectrode
  • Enzyme-nanotube hybrid
  • Gas-diffusion biocathode
  • Series-connection

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Biomedical Engineering
  • Electrochemistry

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