TY  - JOUR
AU  - Ehelebe, Konrad
AU  - Escalera-López, Daniel
AU  - Cherevko, Serhiy
TI  - Limitations of aqueous model systems in the stability assessment of electrocatalysts for oxygen reactions in fuel cell and electrolysers
JO  - Current opinion in electrochemistry
VL  - 29
SN  - 2451-9103
CY  - Amsterdam
PB  - Elsevier
M1  - FZJ-2021-03254
SP  - 100832 -
PY  - 2021
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000704374600011
DO  - DOI:10.1016/j.coelec.2021.100832
UR  - https://juser.fz-juelich.de/record/894492
ER  -