A Membraneless Glucose/O2 Biofuel Cell Based on Pd Aerogels |
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| Authors: | Dr Dan Wen Dr Wei Liu Anne‐Kristin Herrmann Prof Alexander Eychmüller |
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| Affiliation: | Physical Chemistry, TU Dresden, Bergstrasse 66b, 01062 Dresden (Germany), Fax: (+49)?351‐46337164 |
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| Abstract: | In this study, we introduce the first membraneless glucose/O2 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 O2 to H2O with a synergetic effect at the biocathode. By employing these two bioelectrodes, the assembled glucose/O2 biofuel cell showed a maximum power output of 20 μW cm?2 at 0.25 V. |
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| Keywords: | aerogels biofuel cells direct electrocatalysis enzymes glucose palladium |
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