High-temperature PEM fuel cell electrode catalyst layers Part 2: Experimental validation of its effective transport properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924272" target="_blank" >RIV/60461373:22310/22:43924272 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.electacta.2022.140121" target="_blank" >https://doi.org/10.1016/j.electacta.2022.140121</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2022.140121" target="_blank" >10.1016/j.electacta.2022.140121</a>

Result language

angličtina

Original language name

High-temperature PEM fuel cell electrode catalyst layers Part 2: Experimental validation of its effective transport properties

Original language description

In this study, the experimental approach for determination of high-temperature PEM fuel cell, PBI-bonded catalyst layer conductivity and transfer properties was developed and optimised. Electrical conductivity was determined by chronopotentiometry combined with mathematical model, using uncompressed catalyst layer on a conductive glass support. Effective transport properties were determined using gas-diffusion electrode samples fixed in the Wicke-Kallenbach cell. Experimental results were compared with quantities calculated from FIB-SEM tomography. Very good agreement between the results was reached. Theoretical data evaluated on the base of tomography may thus be considered as validated. The results confirm the heat treatment of the catalyst layer to lead to its reorganisation to less porous and better-defined structure with improved electrical conductivity. Changes in effective transport properties, however, were not pronounced. This is due to the nature of gas-diffusion electrode samples. Determined electrical conductivities and transfer properties of catalyst layer underlined the importance of gas-diffusion electrode preparation procedure. This represents an important input for further studies, focused on optimisation of membrane-electrode assemblies for HT PEM FC. © 2022 The Authors

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/GC19-02964J" target="_blank" >GC19-02964J: Electrochemistry of Pt - P oxoacids interface as a key to understanding of high temperature PEM fuel cells performance</a><br>

Continuities

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

Publication year

2022

Confidentiality

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

Name of the periodical

Electrochimica Acta

ISSN

0013-4686

e-ISSN

0013-4686

Volume of the periodical

413

Issue of the periodical within the volume

Neuveden

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

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UT code for WoS article

000778889000007

EID of the result in the Scopus database

2-s2.0-85126761496