Journal Article

FZJ-2021-03254

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Limitations of aqueous model systems in the stability assessment of electrocatalysts for oxygen reactions in fuel cell and electrolysers

Ehelebe, K. (Corresponding author)FZJ* ; Escalera-López, D.FZJ* ; Cherevko, S.FZJ*

2021
Elsevier Amsterdam

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Please use a persistent id in citations: http://hdl.handle.net/2128/28624  doi:10.1016/j.coelec.2021.100832

Abstract: Cost and stability remain the greatest technical barriers to sustainably commercialize low temperature fuel cells and electrolysers. To tackle this problem, numerous advanced electrocatalysts have been proposed and tested in aqueous model systems. There are, however, increasing and evident concerns regarding the value of stability data coming from such studies. Hence, we anticipate that finding new approaches to assess degradation will be a major undertaking in the electrocatalysis research in the next years. Specifically, existing differences between fundamental and actual systems have to be addressed first: (a) electrode architecture; (b) electrolyte; (c) reactant and product transport; and (d) operating conditions. In this perspective, we discuss their influence on the stability of electrocatalysts using the challenging oxygen reduction and oxygen evolution reactions as illustrative cases.

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Contributing Institute(s):

1. Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien (IEK-11)

Research Program(s):

1. 1232 - Power-based Fuels and Chemicals (POF4-123) (POF4-123)

Appears in the scientific report 2021

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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