Tailoring the electronic structure of nanoelectrocatalysts induced by a surface-capping organic molecule for the oxygen reduction reaction

Title
Tailoring the electronic structure of nanoelectrocatalysts induced by a surface-capping organic molecule for the oxygen reduction reaction
Authors
정영훈정동영정남기성영은
Keywords
Energy Conversion and Storage; Energy and Charge Transport
Issue Date
2013-04
Publisher
Journal of Physical Chemistry Letters
Citation
VOL 4, NO 8, 1304-1309
Abstract
Capping organic molecules, including oleylamine, strongly adsorbed onto Pt nanoparticles during preparation steps are considered undesirable species for the oxygen reduction reaction due to decreasing electrochemical active sites. However, we found that a small amount of oleylamine modified platinum nanoparticles showed significant enhancement of the electrochemical activity of the oxygen reduction reaction, even with the loss of the electrochemically active surface area. The enhancement was correlated with the downshift of the frontier d-band structure of platinum and the retardation of competitively adsorbed species. These results suggest that a capping organic molecule modified electrode can be a strategy to design an advanced electrocatalyst by modification of electronic structures.
URI
http://pubs.kist.re.kr/handle/201004/45097
ISSN
19487185
Appears in Collections:
KIST Publication > Article
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