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A Miniature Biofuel Cell

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A biofuel cell, consisting of two 7-ím diameter, 2-cm long carbon fibers and operating at ambient temperature in a pH 5 aqueous solution is described. The areas of the anode and the cathode of the cell are 60 times smaller than those of the smallest reported (methanol oxidizing) fuel cell1 and 180 times smaller than those of the smallest area biofuel cell.2 The power density of the cell exceeds by a factor of 5 that of the highest power density earlier biofuel cell.3 The electrocatalytic film of the microanode catalyzes the electrooxidation of glucose to gluconolactone (eq 1);2-7 that of the microcathode catalyzes the electroreduction of O2 to water (eq 2).8-10 The film on the anode consists of the cross-linked electrostatic adduct of glucose oxidase (GOx) and a 0.1 V (vs Ag/AgCl) redox potential electron-conducting redox polymer, which electrically connects the GOx redox centers to one fiber. The film of the cathode consists of laccase and a 0.55 V (vs Ag/AgCl) electron-conducting redox polymer, electrically connecting the laccase redox centers to the second fiber. The power density of the cell is 64 íW/cm2 at 23 °C and 137 íW/cm2 at 37 °C, and its power output is 280 nW at 23 °C and 600 nW at 37 °C.

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Ketersediaan

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Informasi Detail

Judul Seri

J. Am. Chem. Soc.

No. Panggil

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Penerbit

Washington, DC : American Chemical Society., 2001

Deskripsi Fisik

J. Am. Chem. Soc. 2001, 123, 8630-8631

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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