Enzymatic biofuel cells designed for direct power generation from biofluids in living organisms

Takeo Miyake, Keigo Haneda, Nobuhiro Nagai, Yohei Yatagawa, Hideyuki Onami, Syuhei Yoshino, Toshiaki Abe, Matsuhiko Nishizawa*

*この研究の対応する著者

研究成果: Article査読

188 被引用数 (Scopus)

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 novel miniature assembly that consists of a needle bioanode for accessing biofuels in organisms through their skins and a gas-diffusion biocathode for utilizing the abundant oxygen in air. The performance of the biocathode was fourfold improved by optimizing its hydrophobicity. The assembled device with four needle anodes 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 anti-biofouling agent was effective to stabilize the output power.

本文言語English
ページ(範囲)5008-5012
ページ数5
ジャーナルEnergy and Environmental Science
4
12
DOI
出版ステータスPublished - 2011 12月
外部発表はい

ASJC Scopus subject areas

  • 環境化学
  • 再生可能エネルギー、持続可能性、環境
  • 原子力エネルギーおよび原子力工学
  • 汚染

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