Benchmarking high surface area electrocatalysts in a gas diffusion electrode: measurement of oxygen reduction activities under realistic conditions

Inaba, Masanori; Jensen, Anders Westergaard; Sievers, Gustav Wilhelm; Escudero-Escribano, María; Zana, Alessandro; Arenz, Matthias (2018). Benchmarking high surface area electrocatalysts in a gas diffusion electrode: measurement of oxygen reduction activities under realistic conditions. Energy & environmental science, 11(4), pp. 988-994. Royal Society of Chemistry 10.1039/C8EE00019K

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In this work, we introduce the application of gas diffusion electrodes (GDE) for benchmarking the electrocatalytic performance of high surface area fuel cell catalysts. It is demonstrated that GDEs offer several inherent advantages over the state-of-the-art technique, i.e. thin film rotation disk electrode (TF-RDE) measurements for fast fuel cell catalyst evaluation. The most critical advantage is reactant mass transport. While in RDE measurements the reactant mass transport is severely limited by the gas solubility of the reactant in the electrolyte, GDEs enable reactant transport rates similar to technical fuel cell devices. Hence, in contrast to TF-RDE measurements, performance data obtained from GDE measurements can be directly compared to membrane electrode assembly (MEA) tests. Therefore, the application of GDEs for the testing of fuel cell catalysts closes the gap between catalyst research in academia and real applications.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Zana, Alessandro and Arenz, Matthias

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

ISSN:

1754-5692

Publisher:

Royal Society of Chemistry

Language:

English

Submitter:

Matthias Arenz

Date Deposited:

19 Dec 2018 11:31

Last Modified:

23 Oct 2019 12:46

Publisher DOI:

10.1039/C8EE00019K

BORIS DOI:

10.7892/boris.122191

URI:

https://boris.unibe.ch/id/eprint/122191

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