Performance of a Glucose/O2 Enzymatic Biofuel Cell Containing a Mediated Melanocarpus albomyces Laccase Cathode in a Physiological Buffer

  • Kavanagh P
  • Boland S
  • Jenkins P
 et al. 
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Abstract

We report on oxygen reduction in a physiological buffer solution (0.05 M phosphate buffer containing dissolved O2, 0.1 M NaCl, pH 7.4, 37 °C) by Melanocarpus albomyces laccase, co-immobilized with [Os(2,2'-bipyridine)2(polyvinylimidazole)10Cl]+/2+as a mediator, on glassy carbon electrodes. Such oxygen cathodes yielded current densities of 3.8 mA cm-2at 0.2 V vs. Ag/AgCl, the largest current density reported to date for a mediated laccase cathode in physiological buffer solutions, showing promise for development of biocatalytic fuel cell prototypes. © 2008 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Biocathode
  • Biofuel cell
  • Laccase
  • Osmium complexes
  • Oxygen reduction

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Authors

  • P. Kavanagh

  • S. Boland

  • P. Jenkins

  • D. Leech

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