Redox-polymer-based high-current-density gas-diffusion H\(_2\)-oxidation bioanode using [FeFe] hydrogenase from \(\textit {Desulfovibrio desulfuricans}\) in a membrane-free biofuel cell
- The incorporation of highly active but also highly sensitive catalysts (e.g. the [FeFe] hydrogenase from Desulfovibrio desulfuricans) in biofuel cells is still one of the major challenges in sustainable energy conversion. We report the fabrication of a dual-gas diffusion electrode H\(_2\)/O\(_2\) biofuel cell equipped with a [FeFe] hydrogenase/redox polymer-based high-current-density H\(_2\)-oxidation bioanode. The bioanodes show benchmark current densities of around 14 mA cm\(^{−2}\) and the corresponding fuel cell tests exhibit a benchmark for a hydrogenase/redox polymer-based biofuel cell with outstanding power densities of 5.4 mW cm\(^{−2}\) at 0.7 V cell voltage. Furthermore, the highly sensitive [FeFe] hydrogenase is protected against oxygen damage by the redox polymer and can function under 5 % O\(_2\).
| Author: | Julian SzczesnyGND, James A. BirrellORCiDGND, Felipe ConzueloORCiDGND, Wolfgang LubitzORCiDGND, Adrian RuffORCiDGND, Wolfgang SchuhmannORCiDGND |
|---|---|
| URN: | urn:nbn:de:hbz:294-98923 |
| DOI: | https://doi.org/10.1002/anie.202006824 |
| Parent Title (German): | Angewandte Chemie International Edition |
| Publisher: | Wiley-VCH |
| Place of publication: | Hoboken, New Jersey |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2023/05/17 |
| Date of first Publication: | 2020/05/20 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Tag: | biofuel cells; gas diffusion electrodes; hydrogenases; molecular hydrogen; redox polymers |
| Volume: | 59 |
| Issue: | 38 |
| First Page: | 16506 |
| Last Page: | 16510 |
| Note: | Dieser Beitrag ist auf Grund des DEAL-Wiley-Vertrages frei zugänglich. |
| Institutes/Facilities: | Lehrstuhl für Analytische Chemie - Elektroanalytik & Sensorik |
| Dewey Decimal Classification: | Naturwissenschaften und Mathematik / Chemie, Kristallographie, Mineralogie |
| open_access (DINI-Set): | open_access |
| faculties: | Fakultät für Chemie und Biochemie |
| Licence (English): |  Creative Commons - CC BY 4.0 - Attribution 4.0 International |
