Enzyme-based biofuel cell designed for direct power generation from biofluids in living organisms

T. Miyake*, S. Yoshino, T. Ofuji, H. Kaji, M. Nishizawa

*この研究の対応する著者

研究成果: Conference contribution

抄録

Enzymatic biofuel cells have attracted much attention for their potential to directly use biochemical energy sources in living organisms such as animals, fruits, etc. However, generally natural organisms have a skin, and the oxygen concentration in the organisms is lower than that of biofuels like sugars. Here, we fabricated a miniature assembly that consists of a needle bioanode for accessing biofuels in organisms through their skins and a gas-diffusion biocathode for utilizing abundant oxygen in air, for the first time. The performance of the biocathode was fourfold improved by optimizing its hydrophobicity. The assembled device with a needle anode for fructose oxidation was inserted into a raw grape, producing a maximum power of 26.5 μW (115 μW cm-2) at 0.34 V. A light-emitting diode (LED) with the cell served as a self-powered indicator of the sugar level in the grape. Power generation from blood sugar was also investigated by inserting a needle anode for glucose oxidation into a blood vessel in a rabbit ear. Prior coating of the tip of the needle anode with an antibiofouling agent was effective to stabilize output power.

本文言語English
ホスト出版物のタイトルProceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012
出版社Chemical and Biological Microsystems Society
ページ1432-1434
ページ数3
ISBN(印刷版)9780979806452
出版ステータスPublished - 2012 1月 1
外部発表はい
イベント16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012 - Okinawa, Japan
継続期間: 2012 10月 282012 11月 1

出版物シリーズ

名前Proceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012

Conference

Conference16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012
国/地域Japan
CityOkinawa
Period12/10/2812/11/1

ASJC Scopus subject areas

  • 化学工学(その他)
  • バイオエンジニアリング

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