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@ARTICLE{Ghl:878266,
author = {Göhl, Daniel and Garg, Aaron and Paciok, Paul and
Mayrhofer, Karl J. J. and Heggen, Marc and Shao-Horn, Yang
and Dunin-Borkowski, Rafal E. and Román-Leshkov, Yuriy and
Ledendecker, Marc},
title = {{E}ngineering stable electrocatalysts by synergistic
stabilization between carbide cores and {P}t shells},
journal = {Nature materials},
volume = {19},
number = {3},
issn = {1476-4660},
address = {Basingstoke},
publisher = {Nature Publishing Group},
reportid = {FZJ-2020-02735},
pages = {287 - 291},
year = {2020},
abstract = {Core–shell particles with earth-abundant cores represent
an effective design strategy for improving the performance
of noble metal catalysts, while simultaneously reducing the
content of expensive noble metals1,2,3,4. However, the
structural and catalytic stabilities of these materials
often suffer during the harsh conditions encountered in
important reactions, such as the oxygen reduction reaction
(ORR)3,4,5. Here, we demonstrate that atomically thin Pt
shells stabilize titanium tungsten carbide cores, even at
highly oxidizing potentials. In situ, time-resolved
experiments showed how the Pt coating protects the normally
labile core against oxidation and dissolution, and detailed
microscopy studies revealed the dynamics of partially and
fully coated core–shell nanoparticles during potential
cycling. Particles with complete Pt coverage precisely
maintained their core–shell structure and atomic
composition during accelerated electrochemical ageing
studies consisting of over 10,000 potential cycles. The
exceptional durability of fully coated materials highlights
the potential of core–shell architectures using
earth-abundant transition metal carbide (TMC) and nitride
(TMN) cores for future catalytic applications.},
cin = {ER-C-1 / IEK-11},
ddc = {610},
cid = {I:(DE-Juel1)ER-C-1-20170209 / I:(DE-Juel1)IEK-11-20140314},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)
/ DFG project 257727131 - Nanoskalige Pt
Legierungselektrokatalysatoren mit definierter Morphologie:
Synthese, Electrochemische Analyse, und ex-situ/in-situ
Transmissionselektronenmikroskopische (TEM) Studien
(257727131) / 134 - Electrolysis and Hydrogen (POF3-134)},
pid = {G:(DE-HGF)POF3-143 / G:(GEPRIS)257727131 /
G:(DE-HGF)POF3-134},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31844277},
UT = {WOS:000518222200012},
doi = {10.1038/s41563-019-0555-5},
url = {https://juser.fz-juelich.de/record/878266},
}