Size-Dependent Activity of Platinum Nanoparticles for Oxygen Reduction Reaction in a PEFC with a Multiscale Approach

Autor:	Tetsuya Koido, Katsunori Makino, Mahito Chiba
Rok vydání:	2010
Předmět:	Volume (thermodynamics) chemistry Chemical engineering Monte Carlo method Inorganic chemistry Elementary reaction Size dependent chemistry.chemical_element Nanoparticle Oxygen reduction reaction Platinum Platinum nanoparticles
Zdroj:	ECS Transactions. 33:105-114
ISSN:	1938-6737 1938-5862
DOI:	10.1149/1.3484507
Popis:	Quantum calculations to determine the elementary reaction rates of oxygen reduction reaction (ORR) on platinum surface, the Dynamic Monte Carlo simulation on {111} and {100} facets, and the geometrical statistics of the numbers of the atoms on the facets of platinum nanoparticles are combined to analyze the size effect of the nanoparticles for ORR in a PEFC. The mass activity (MA) is maximized at a certain sphere diameter with an equivalent volume. It depends on the shape of the nanoparticle.
Databáze:	OpenAIRE
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