A fully protected hydrogenase/polymer-based bioanode for high-performance hydrogen/glucose biofuel cells

Adrian Ruff (), Julian Szczesny, Nikola Marković, Felipe Conzuelo, Sónia Zacarias, Inês A. C. Pereira, Wolfgang Lubitz and Wolfgang Schuhmann ()
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Adrian Ruff: Ruhr-Universität Bochum
Julian Szczesny: Ruhr-Universität Bochum
Nikola Marković: Ruhr-Universität Bochum
Felipe Conzuelo: Ruhr-Universität Bochum
Sónia Zacarias: Universidade Nova de Lisboa
Inês A. C. Pereira: Universidade Nova de Lisboa
Wolfgang Lubitz: Max-Planck-Institut für Chemische Energiekonversion
Wolfgang Schuhmann: Ruhr-Universität Bochum

Nature Communications, 2018, vol. 9, issue 1, 1-10

Abstract: Abstract Hydrogenases with Ni- and/or Fe-based active sites are highly active hydrogen oxidation catalysts with activities similar to those of noble metal catalysts. However, the activity is connected to a sensitivity towards high-potential deactivation and oxygen damage. Here we report a fully protected polymer multilayer/hydrogenase-based bioanode in which the sensitive hydrogen oxidation catalyst is protected from high-potential deactivation and from oxygen damage by using a polymer multilayer architecture. The active catalyst is embedded in a low-potential polymer (protection from high-potential deactivation) and covered with a polymer-supported bienzymatic oxygen removal system. In contrast to previously reported polymer-based protection systems, the proposed strategy fully decouples the hydrogenase reaction form the protection process. Incorporation of the bioanode into a hydrogen/glucose biofuel cell provides a benchmark open circuit voltage of 1.15 V and power densities of up to 530 µW cm−2 at 0.85 V.

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06106-3

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DOI: 10.1038/s41467-018-06106-3

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