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@ARTICLE{Wise:418840,
author = {Wise, Anna M. and Richardson, Peter W. and Price, Stephen
W. T. and Chouchelamane, Gaël and Calvillo, Laura and
Hendra, Patrick J. and Toney, Michael F. and Russell,
Andrea},
title = {{I}nhibitive effect of {P}t on {P}d-hydride formation of
{P}d@{P}t core-shell electrocatalysts: {A}n in situ {EXAFS}
and {XRD} study},
journal = {Electrochimica acta},
volume = {262},
issn = {0013-4686},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {PUBDB-2019-00744},
pages = {27 - 38},
year = {2018},
note = {© Elsevier Ltd.},
abstract = {n situ EXAFS and XRD have been used to study the
electrochemical formation of hydride phases, H$_{abs}$, in
0.5 M H$_2$SO$_4$ for a Pd/C catalyst and a series of
Pd@Pt core-shell catalysts with varying Pt shell thickness,
from 0.5 to 4 monolayers. Based on the XRD data a 3\%
lattice expansion is observed for the Pd/C core catalyst
upon hydride formation at 0.0 V. In contrast, the
expansion was ≤0.6\% for all of the core-shell catalysts.
The limited extent of the lattice expansion observed
suggests that hydride formation, which may occur during
periodic active surface area measurements conducting during
accelerated aging tests or driven by H$_2$ crossover in PEM
fuel cells, is unlikely to contribute significantly to the
degradation of Pd@Pt core-shell electrocatalysts in contrast
to the effects of oxide formation.},
cin = {DOOR},
ddc = {540},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
experiment = {EXP:(DE-H253)D-X1-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000424637300004},
doi = {10.1016/j.electacta.2017.12.161},
url = {https://bib-pubdb1.desy.de/record/418840},
}