Miniature direct electron transfer based sulphite/oxygen enzymatic fuel cells

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Miniature direct electron transfer based sulphite/oxygen enzymatic fuel cells

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Publication Article, peer reviewed scientific
Title Miniature direct electron transfer based sulphite/oxygen enzymatic fuel cells
Author(s) Zeng, Ting ; Pankratov, Dmitry ; Falk, Magnus ; Leimkühler, Silke ; Shleev, Sergey ; Wollenberger, Ulla
Date 2015
English abstract
A direct electron transfer (DET) based sulphite/oxygen biofuel cell is reported that utilises human sulphite oxidase (hSOx) and Myrothecium verrucaria bilirubin oxidase (MvBOx) and nanostructured gold electrodes. For bioanode construction, the nanostructured gold microelectrodes were further modified with 3,3′-dithiodipropionic acid di(N-hydroxysuccinimide ester) to which polyethylene imine was covalently attached. hSOx was adsorbed onto this chemically modified nanostructured electrode with high surface loading of electroactive enzyme and in presence of sulphite high anodic bioelectrocatalytic currents were generated with an onset potential of 0.05 V vs. NHE. The biocathode contained MvBOx directly adsorbed to the deposited gold nanoparticles for cathodic oxygen reduction starting at 0.71 V vs. NHE. Both enzyme electrodes were integrated to a DET-type biofuel cell. Power densities of 8 and 1 μW cm−2 were achieved at 0.15 V and 0.45 V of cell voltages, respectively, with the membrane based biodevices under aerobic conditions.
DOI http://dx.doi.org/10.1016/j.bios.2014.10.080 (link to publisher's fulltext)
Publisher Elsevier
Host/Issue Biosensors and Bioelectronics;
Volume 66
ISSN 0956-5663
Pages 39–42
Language eng (iso)
Subject(s) Enzymatic fuel cell
Microscale electrode
Direct electron transfer
Sulphite oxidase
Bilirubin oxidase
Sciences
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/18446 (link to this page)

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