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Current densities from electrocatalytic oxygen reduction in laccase/ABTS solutions by William E. Farneth; Bruce A. Diner; Timothy D. Gierke; Michael B. D’Amore is a Engineering article available to read on EtoBox.

What is Current densities from electrocatalytic oxygen reduction in laccase/ABTS solutions about?

Biocatalysts are an attractive alternative to conventional noble metal catalysts for fuel cell cathodes. In principle, they combine the possibility of more efficient operation (lower intrinsic overpotential) with the benefits of renewability and low temperature operation. In this paper we discuss some fundamental biochemistry and electrochemistry of one cathode system that has attracted some interest in the biofuel cell community, laccase as catalyst with 2,2 0 -azinobis-(3-ethylbenzothiazoline-6-sulfonate) (ABTS) as mediator. We focus on one laccase preparation from Trametes versicolor, and demonstrate that steady state electrocatalytic oxygen reduction currents can be modeled using the measured intrinsic properties of the enzyme (k cat , K M ) and mediator (D M ). We then discuss some of the implications of this modeling for practical electrode design.

Who reads Current densities from electrocatalytic oxygen reduction in laccase/ABTS solutions?

Author

William E. Farneth; Bruce A. Diner; Timothy D. Gierke; Michael B. D’Amore

Publisher

Elsevier ; Elsevier BV (ISSN 1572-6657)

Published

2005

Language

EN

Field

Engineering (Physical Sciences)