TY - JOUR
T1 - Enzymatic biofuel cells designed for direct power generation from biofluids in living organisms
AU - Miyake, Takeo
AU - Haneda, Keigo
AU - Nagai, Nobuhiro
AU - Yatagawa, Yohei
AU - Onami, Hideyuki
AU - Yoshino, Syuhei
AU - Abe, Toshiaki
AU - Nishizawa, Matsuhiko
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/12
Y1 - 2011/12
N2 - 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.
AB - 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.
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U2 - 10.1039/c1ee02200h
DO - 10.1039/c1ee02200h
M3 - Article
AN - SCOPUS:82555193617
VL - 4
SP - 5008
EP - 5012
JO - Energy and Environmental Science
JF - Energy and Environmental Science
SN - 1754-5692
IS - 12
ER -