Challenges and limitations of accelerated stress testing in GDE half-cell set-ups

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43927933" target="_blank" >RIV/60461373:22310/23:43927933 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.jpowsour.2023.232905" target="_blank" >https://doi.org/10.1016/j.jpowsour.2023.232905</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpowsour.2023.232905" target="_blank" >10.1016/j.jpowsour.2023.232905</a>

Result language

angličtina

Original language name

Challenges and limitations of accelerated stress testing in GDE half-cell set-ups

Original language description

Commercialisation of proton exchange membrane fuel cells (PEMFCs) depends on accurate and high throughput durability testing at the laboratory scale. With the rotating disk electrode method (RDE) unable to mimic the three-phase boundary scenario in the membrane electrode assembly (MEA), gas diffusion electrode half-cells were proposed for fundamental catalysis research. However, durability testing in such half-cell setups under realistic operational conditions has been limited, and in particular, not yet validated against RDE or FC data. In this paper, an attempt is made to fill part of this knowledge gap by performing accelerated stress tests in thin films, gas diffusion electrodes and membrane electrode assemblies. The results are compared for two selected catalysts with different Pt loading, expected to show broad variations in their degradation behaviour. Accelerated stress tests (ASTs) were performed with various start/stop potentials and load cycles, and the oxygen reduction reaction (ORR) performance studied before and after the AST protocols. The internal resistance of the half-cell was found to be influenced most significantly by gas coverage and temperature changes on the working electrode and must be compensated accordingly. The applied vertex potentials for ASTs after compensation have to be accurate in order to induce the intended degradation phenomena.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

<a href="/en/project/GF22-23668K" target="_blank" >GF22-23668K: Pt-based intermetallic alloy catalysts for improved performance of high-temperature PEM fuel cells with reduced Pt loading</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

JOURNAL OF POWER SOURCES

ISSN

0378-7753

e-ISSN

1873-2755

Volume of the periodical

569

Issue of the periodical within the volume

June

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

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UT code for WoS article

000976836600001

EID of the result in the Scopus database

2-s2.0-85151619635