title: A membraneless glucose/O(2) biofuel cell based on Pd aerogels.
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 H2 O 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.
authors.affiliation: Physical Chemistry, TU Dresden, Bergstrasse 66b, 01062 Dresden (Germany), Fax: (+49) 351-46337164.
authors.forename: Dan
authors.initials: D
authors.lastname: Wen
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.forename: Anne-Kristin
authors.initials: AK
authors.lastname: Herrmann
authors.forename: Alexander
authors.initials: A
authors.lastname: Eychmüller
mesh_terms: D001674:Bioelectric Energy Sources; D002384:Catalysis; D004566:Electrodes; D004800:Enzymes, Immobilized / Q000378:metabolism; D005782:Gels / Q000737:chemistry*; D005947:Glucose / Q000737:chemistry / Q000378:metabolism*; D010084:Oxidation-Reduction; D044925:Oxidoreductases Acting on CH-CH Group Donors / Q000737:chemistry / Q000378:metabolism; D010100:Oxygen / Q000737:chemistry / Q000378:metabolism*; D010165:Palladium / Q000737:chemistry*; D016062:Porosity; D047392:beta-Cyclodextrins / Q000737:chemistry
chemical_list: D004800:Enzymes, Immobilized; D005782:Gels; D047392:beta-Cyclodextrins; D010165:Palladium; D044925:Oxidoreductases Acting on CH-CH Group Donors; C042401:bilirubin oxidase; D005947:Glucose; C031215:betadex; D010100:Oxygen
keywords: aerogels; biofuel cells; direct electrocatalysis; enzymes; glucose; palladium