Dissolution and Redeposition on Pt Nanoparticles under Electrochemical Conditions Full article
Journal |
Chemical Physics Letters
ISSN: 0009-2614 , E-ISSN: 1873-4448 |
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Output data | Year: 2011, Volume: 509, Number: 4-6, Pages: 134-137 Pages count : 4 DOI: 10.1016/j.cplett.2011.04.075 | ||||
Tags | QUARTZ-CRYSTAL MICROBALANCE; DYNAMIC MECHANISTIC MODEL; ELECTROLYTE FUEL-CELLS; PLATINUM DISSOLUTION; POLYMER ELECTROLYTE; DEGRADATION; REDUCTION; CATALYST; KINETICS; PT(111) | ||||
Authors |
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Affiliations |
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Funding (2)
1 | Energimyndigheten | NANO-SEE 181-1 |
2 | Chalmers University of Technology |
Abstract:
We present a Schottky-type model describing Pt2+ dissolution and redeposition on Pt nanoparticles in polymer electrolyte fuel cells. The charge transfer is considered to occur near the surface of nanoparticles so that the potential barrier for the reaction is formed by the double-layer potential and the image interaction. With increasing electrode potential, the transfer coefficient for dissolution is found to decrease from 0.6–0.7 down to 0.3–0.4. Its dependence on the effective dielectric constant of the double layer is appreciable while the dependence on the particle size is weak.
Cite:
Zhdanov V.P.
, Kasemo B.
Dissolution and Redeposition on Pt Nanoparticles under Electrochemical Conditions
Chemical Physics Letters. 2011. V.509. N4-6. P.134-137. DOI: 10.1016/j.cplett.2011.04.075 WOS Scopus РИНЦ
Dissolution and Redeposition on Pt Nanoparticles under Electrochemical Conditions
Chemical Physics Letters. 2011. V.509. N4-6. P.134-137. DOI: 10.1016/j.cplett.2011.04.075 WOS Scopus РИНЦ
Dates:
Submitted: | Dec 17, 2010 |
Published online: | May 4, 2011 |
Accepted: | May 25, 2011 |
Published print: | Jun 1, 2011 |
Identifiers:
Web of science | WOS:000291148800009 |
Scopus | 2-s2.0-79957841655 |
Elibrary | 16999716 |
Chemical Abstracts | 2011:700843 |
Chemical Abstracts (print) | 155:195709 |
OpenAlex | W1981527334 |