Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 115, Issue 51, Pages 25422-25428Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp209295f
Keywords
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Funding
- European Community [FP7/2007-2013, 226716]
- NWO-CW/VICI
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Cobalt phthalocyanine (CoPc) and iron phthalocyanine (FePc) are possible oxygen reduction catalysts in fuel cells, but the exact functioning and deactivation of these catalysts is unknown. The electronic structure of the CoPc and FePc has been studied in situ under hydrogen and oxygen atmospheres by a combination of ambient-pressure X-ray photoelectron spectroscopy and X-ray absorption spectroscopy. The results show that when oxygen is introduced, the iron changes oxidation state while the cobalt does not. The data show that oxygen binds in an end-on configuration in CoPc, while for FePc side-on binding is most likely.
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