A glucose/oxygen enzymatic fuel cell based on redox polymer and enzyme immobilisation at highly-ordered macroporous gold electrodes

Susan Boland; Dónal Leech

doi:10.1039/C1AN15537G

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Analyst

Issue 1, 2012

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A glucose/oxygen enzymatic fuel cell based on redox polymer and enzyme immobilisation at highly-ordered macroporous gold electrodes

Susan Boland^a and Dónal Leech*^a

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School of Chemistry, National University of Ireland, Galway, Ireland
E-mail: donal.leech@nuigalway.ie ;
Fax: +353 91525700 ;
Tel: +353 493563

Analyst, 2012,137, 113-117

DOI: 10.1039/C1AN15537G
Received 28 Jun 2011, Accepted 04 Oct 2011
First published online 21 Oct 2011

This article is part of themed collection: Future Electroanalytical Developments

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Abstract
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Highly ordered macroporous electrodes are prepared by electro-deposition of gold through a polystyrene sphere template. Drop-coating redox polymer and either glucose oxidase, for the anode, or Melanocarpus albomyces laccase, for the cathode on the macroporous gold provides film-coated electrodes for assembly of membrane-less glucose/oxygen enzymatic fuel cells (EFC) in pH 7.4 buffer containing 10 mM glucose and 0.15 M NaCl. Under these conditions the maximum power density of 17 μWcm⁻² for EFCs using films adsorbed to planar gold electrodes increased to 38 μWcm⁻² for films adsorbed to 2½ sphere gold macroporous electrodes.

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