Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 20, Issue 15, Pages 4380-4385Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201304635
Keywords
aerogels; biofuel cells; direct electrocatalysis; enzymes; glucose; palladium
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Funding
- Alexander von Humboldt Foundation
- DFG [GRK 1401, EY16/10-2]
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In this study, we introduce the first membraneless glucose/O-2 biofuel cell using Pd-based aerogels as electrode materials. The bioanode was fabricated with a coimmobilized mediator and glucose oxidase for the oxidation of glucose, in which ferrocenecarboxylic acid was integrated into a three-dimensional porous beta-cyclodextrin-modified Pd aerogel to mediate the bioelectrocatalytic reaction. Bilirubin oxidase and Pd-Pt alloy aerogel were confined to an electrode surface, which realized the direct bioelectrocatalytic function for the reduction of O-2 to H2O with a synergetic effect at the biocathode. By employing these two bioelectrodes, the assembled glucose/O-2 biofuel cell showed a maximum power output of 20Wcm(-2) at 0.25V.
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