Sony's Biofuel Cell

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type 17 Nov 2008Publisher:The Electrochemical SocietyJournal:ECS Transactions, volume 13, pages 89-97 (issn: 1938-5862, eissn: 1938-6737,

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Authors: Yuichi Tokita; Takaaki Nakagawa; Hideki Sakai; Taiki Sugiyama; Ryuhei Matsumoto; Tsuyonobu Hatazawa;

doi: 10.1149/1.3036214

Sony's Biofuel Cell

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Abstract

We have developed the passive-type biofuel cell having 3.0mW/cm2 power at 500 mV and 800 mV open circuit voltage. This performance has been achieved by introducing 2-amino-1,4-naphthoquinone (ANQ) as an anode electron mediator. Although the redox potential of ANQ, -0.36V (vs Ag/AgCl) is much more negative than that of vitamin K3 (VK3), -0.22V, the kcat value of diaphorase (DI) against ANQ, 620 sec-1 is not so small in comparison with that of VK3, 1300 sec-1. This character has been maintained even in the immobilized electrode modified by DI and ANQ, so that the biofuel cell power has increased from 1.5mW/cm2 of VK3 to 3.0mW/cm2 of ANQ.

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Sony Corporation (United States)
United States

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