Electrochemical stability and postmortem studies of Pt/SiC catalysts for polymer electrolyte membrane fuel cells
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Electrochemical stability and postmortem studies of Pt/SiC catalysts for polymer electrolyte membrane fuel cells. / Stamatin, Serban Nicolae; Spéder, József; Dhiman, Rajnish; Arenz, Matthias; Skou, Eivind Morten.
I: A C S Applied Materials and Interfaces, Bind 7, Nr. 11, 2015, s. 6153-6161.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Electrochemical stability and postmortem studies of Pt/SiC catalysts for polymer electrolyte membrane fuel cells
AU - Stamatin, Serban Nicolae
AU - Spéder, József
AU - Dhiman, Rajnish
AU - Arenz, Matthias
AU - Skou, Eivind Morten
PY - 2015
Y1 - 2015
N2 - In the presented work, the electrochemical stability of platinized silicon carbide is studied. Postmortem transmission electron microscopy and X-ray photoelectron spectroscopy were used to document the change in the morphology and structure upon potential cycling of Pt/SiC catalysts. Two different potential cycle aging tests were used in order to accelerate the support corrosion, simulating start-up/shutdown and load cycling. On the basis of the results, we draw two main conclusions. First, platinized silicon carbide exhibits improved electrochemical stability over platinized active carbons. Second, silicon carbide undergoes at least mild oxidation if not even silicon leaching.
AB - In the presented work, the electrochemical stability of platinized silicon carbide is studied. Postmortem transmission electron microscopy and X-ray photoelectron spectroscopy were used to document the change in the morphology and structure upon potential cycling of Pt/SiC catalysts. Two different potential cycle aging tests were used in order to accelerate the support corrosion, simulating start-up/shutdown and load cycling. On the basis of the results, we draw two main conclusions. First, platinized silicon carbide exhibits improved electrochemical stability over platinized active carbons. Second, silicon carbide undergoes at least mild oxidation if not even silicon leaching.
U2 - 10.1021/am508982d
DO - 10.1021/am508982d
M3 - Journal article
C2 - 25719513
VL - 7
SP - 6153
EP - 6161
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
SN - 1944-8244
IS - 11
ER -
ID: 143064773