Biofuel cell anode: NAD+/glucose dehydrogenase-coimmobilized ketjenblack electrode

T. Miyake, M. Oike, S. Yoshino, Y. Yatagawa, K. Haneda, H. Kaji, M. Nishizawa

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Abstract

We have studied the coimmobilization of glucose dehydrogenase (GDH) and its cofactor, oxidized nicotinamide adenine dinucleotide (NAD+), on a ketjenblack (KB) electrode as a step toward a biofuel cell anode that works without mediators. A KB electrode was first treated with a sulfuric acid/nitric acid/water mixture to lower the overvoltage for NADH oxidation, and was next chemically modified with NAD+ and GDH. The improved GDH/NAD+/KB electrode is found to oxidize glucose around 0 V vs. Ag/AgCl. A biofuel cell constructed with a bilirubin oxidase-immobilized KB cathode showed a maximum power density of 52 μW/cm2 at 0.3 V.

Original languageEnglish
Pages (from-to)123-126
Number of pages4
JournalChemical Physics Letters
Volume480
Issue number1-3
DOIs
Publication statusPublished - 2009 Sep 28

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Miyake, T., Oike, M., Yoshino, S., Yatagawa, Y., Haneda, K., Kaji, H., & Nishizawa, M. (2009). Biofuel cell anode: NAD+/glucose dehydrogenase-coimmobilized ketjenblack electrode. Chemical Physics Letters, 480(1-3), 123-126. https://doi.org/10.1016/j.cplett.2009.08.075