Homogeneous Deposition of Platinum Nanoparticles on Carbon Black for Proton Exchange Membrane Fuel Cell
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Fang, Baizeng | - |
dc.contributor.author | Chaudhari, Nitin K. | - |
dc.contributor.author | Kim, Min-Sik | - |
dc.contributor.author | Kim, Jung Ho | - |
dc.contributor.author | Yu, Jong-Sung | - |
dc.date.accessioned | 2021-09-08T12:24:17Z | - |
dc.date.available | 2021-09-08T12:24:17Z | - |
dc.date.created | 2021-06-11 | - |
dc.date.issued | 2009-10-28 | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/119093 | - |
dc.description.abstract | A simple and efficient approach has been developed for synthesis of carbon-supported Pt nanoparticles (NPs) that combines homogeneous deposition (HD) of Pt complex species through a gradual increase of pH realized by in situ hydrolysis of urea and subsequent uniform reduction by ethylene glycol (EG) in a polyol process, giving control over the size and dispersion of Pt NPs. With increasing amount of urea in the starting Pt salt aqueous solution, the size of Pt complex species decreases and so does that of the metallic Pt NPs. The decrease in size of the Pt species is likely attributable to two determining factors: the steric contraction effect and the electrostatic charge effect. The excellent electrocatalysis ability of the Pt catalysts produced by HD-EG is demonstrated through the determination of electrochemical surface area and fuel-cell polarization performance. The Pt NPs deposited on Vulcan XC-72 (VC) carbon black by the HD-EG strategy show smaller size with more uniform dispersion, higher Pt utilization efficiency, and considerably improved fuel-cell polarization performance compared with the Pt NPs prepared by conventional sodium borohydride reduction or by a microwave-assisted polyol approach. Particularly important and significant is that this HD-EG method is very efficient for the synthesis of high Pt loading catalysts with tunable NP size and uniform particle dispersion. A high metal loading catalyst such as Pt(60 wt %)/VC fabricated by the HD-EG method outperforms ones with mid-to-low metal loadings (i.e., 40 and 20 wt %), even at a very low catalyst loading of 0.2 mg of Pt cm(-2) at the cathode, which is for the first time reported for the VC-supported Pt catalysts. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | CORE/MESOPOROUS SHELL CARBON | - |
dc.subject | SUPPORTED PLATINUM | - |
dc.subject | CATALYST SUPPORT | - |
dc.subject | CATHODE ELECTROCATALYST | - |
dc.subject | SIZE CONTROL | - |
dc.subject | FORMIC-ACID | - |
dc.subject | PERFORMANCE | - |
dc.subject | PRECIPITATION | - |
dc.subject | NANOCRYSTALS | - |
dc.subject | NANOTUBES | - |
dc.title | Homogeneous Deposition of Platinum Nanoparticles on Carbon Black for Proton Exchange Membrane Fuel Cell | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yu, Jong-Sung | - |
dc.identifier.doi | 10.1021/ja905749e | - |
dc.identifier.scopusid | 2-s2.0-70350290487 | - |
dc.identifier.wosid | 000271272000053 | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.131, no.42, pp.15330 - 15338 | - |
dc.relation.isPartOf | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.citation.title | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.citation.volume | 131 | - |
dc.citation.number | 42 | - |
dc.citation.startPage | 15330 | - |
dc.citation.endPage | 15338 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.subject.keywordPlus | CORE/MESOPOROUS SHELL CARBON | - |
dc.subject.keywordPlus | SUPPORTED PLATINUM | - |
dc.subject.keywordPlus | CATALYST SUPPORT | - |
dc.subject.keywordPlus | CATHODE ELECTROCATALYST | - |
dc.subject.keywordPlus | SIZE CONTROL | - |
dc.subject.keywordPlus | FORMIC-ACID | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | PRECIPITATION | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
dc.subject.keywordPlus | NANOTUBES | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.