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@ARTICLE{Grlin:454023,
author = {Görlin, Mikaela and Halldin Stenlid, Joakim and Koroidov,
Sergey and Wang, Hsin-Yi and Börner, Mia and Shipilin,
Mikhail and Kalinko, Aleksandr and Murzin, Vadim and
Safonova, Olga V. and Nachtegaal, Maarten and Uheida,
Abdusalam and Dutta, Joydeep and Bauer, Matthias and
Nilsson, Anders and Diaz Morales, Oscar},
title = {{K}ey activity descriptors of nickel-iron oxygen evolution
electrocatalysts in the presence of alkali metal cations},
journal = {Nature Communications},
volume = {11},
number = {1},
issn = {2041-1723},
address = {[London]},
publisher = {Nature Publishing Group UK},
reportid = {PUBDB-2021-00380},
pages = {6181},
year = {2020},
abstract = {Efficient oxygen evolution reaction (OER) electrocatalysts
are pivotal for sustainable fuel production, where the Ni-Fe
oxyhydroxide (OOH) is among the most active catalysts for
alkaline OER. Electrolyte alkali metal cations have been
shown to modify the activity and reaction intermediates,
however, the exact mechanism is at question due to
unexplained deviations from the cation size trend. Our X-ray
absorption spectroelectrochemical results show that bigger
cations shift the Ni2+/(3+δ)+ redox peak and OER activity
to lower potentials (however, with typical discrepancies),
following the order
CsOH > NaOH ≈ KOH > RbOH > LiOH. Here, we
find that the OER activity follows the variations in
electrolyte pH rather than a specific cation, which accounts
for differences both in basicity of the alkali hydroxides
and other contributing anomalies. Our density functional
theory-derived reactivity descriptors confirm that cations
impose negligible effect on the Lewis acidity of Ni, Fe, and
O lattice sites, thus strengthening the conclusions of an
indirect pH effect.},
cin = {FS-PET-S / DOOR ; HAS-User},
ddc = {500},
cid = {I:(DE-H253)FS-PET-S-20190712 /
I:(DE-H253)HAS-User-20120731},
pnm = {6213 - Materials and Processes for Energy and Transport
Technologies (POF3-621) / 6G3 - PETRA III (POF3-622) /
SWEDEN-DESY - SWEDEN-DESY Collaboration
$(2020_Join2-SWEDEN-DESY)$},
pid = {G:(DE-HGF)POF3-6213 / G:(DE-HGF)POF3-6G3 /
$G:(DE-HGF)2020_Join2-SWEDEN-DESY$},
experiment = {EXP:(DE-H253)P-P64-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33268768},
UT = {WOS:000598904000001},
doi = {10.1038/s41467-020-19729-2},
url = {https://bib-pubdb1.desy.de/record/454023},
}