A Nernstian Biosupercapacitor

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A Nernstian Biosupercapacitor

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Publication Article, peer reviewed scientific
Title A Nernstian Biosupercapacitor
Author Pankratov, Dmitry ; Conzuelo, Felipe ; Pinyou, Piyanut ; Alsaoub, Sabine ; Schuhmann, Wolfgang ; Shleev, Sergey
Date 2016
English abstract
We propose the very first "Nernstian biosupercapacitor", a biodevice based on only one redox polymer: poly(vinyl imidazole-​co-​allylamine)​[Os(bpy)​2Cl]​, and two biocatalysts. At the bioanode PQQ-​dependent glucose dehydrogenase reduces the Os3+ moieties at the polymer to Os2+ shifting the Nernst potential of the Os3+/Os2+ redox couple to neg. values. Concomitantly, at the biocathode the redn. of O2 by means of bilirubin oxidase embedded in the same redox polymer leads to the oxidn. of Os2+ to Os3+ shifting the Nernst potential to higher values. Despite the use of just one redox polymer an open circuit voltage of more than 0.45 V was obtained during charging and the charge is stored in the redox polymer at both the bioanode and the biocathode. By connecting both electrodes via a predefined resistor a high power d. is obtained for a short time exceeding the steady state power of a corresponding biofuel cell by a factor of 8.
DOI https://doi.org/10.1002/anie.201607144 (link to publisher's fulltext.)
Link http://dx.doi.org/10.1002/anie.201607144 .Icon
Publisher Wiley
Host/Issue Angewandte Chemie, International Edition;49
Volume 55
ISSN 1433-7851
Pages 15434-15438
Language eng (iso)
Subject Sciences
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/21939 Permalink to this page
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