Electrodeposition-fabricated PtCu-alloy cathode catalysts for high-temperature proton exchange membrane fuel cells
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Hyanjoo | - |
dc.contributor.author | Kim, Kyung Min | - |
dc.contributor.author | Kim, Hoyoung | - |
dc.contributor.author | Kim, Dong-Kwon | - |
dc.contributor.author | Won, Yong Sun | - |
dc.contributor.author | Kim, Soo-Kil | - |
dc.date.available | 2019-03-07T04:38:37Z | - |
dc.date.issued | 2018-07 | - |
dc.identifier.issn | 0256-1115 | - |
dc.identifier.issn | 1975-7220 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/2007 | - |
dc.description.abstract | Pt electrocatalysts in high-temperature proton exchange membrane fuel cells (HT-PEMFCs) containing phosphoric acid (PA)-doped polymer membranes are prone to poisoning by leaked PA. We performed a preliminary density functional theory (DFT) study to investigate the relationship between the electronic structure of Pt surfaces and their adsorption of PA. Excess charge on Pt was found to weaken its bonding with the oxygen in PA, thus presenting a strategy for the fabrication of PA-resistant catalyst materials. Consequently, PtCu-alloy catalysts with various compositions were prepared by electrodeposition. The morphologies and crystalline structures of the alloys were strongly dependent on alloy composition. Moreover, the Pt atoms in the PtCu-alloy catalysts were found to be in an electron-rich state, similar to that of the excessively charged Pt simulated in the DFT study. As a result, the oxygen reduction reaction activities of the PtCu-alloy catalysts were superior to that of a Pt-only catalyst, regardless of the presence of PA. In the absence of PA, the higher activity of the PtCu-alloy catalysts was ascribable to conventional alloying effects, while the increased activity in the presence of PA was largely due to the enhanced resistance to PA poisoning. Therefore, PtCu-alloy catalysts easily prepared by electrodeposition were found to be strong candidate materials for HT-PEMFC electrodes. | - |
dc.format.extent | 9 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | KOREAN INSTITUTE CHEMICAL ENGINEERS | - |
dc.title | Electrodeposition-fabricated PtCu-alloy cathode catalysts for high-temperature proton exchange membrane fuel cells | - |
dc.type | Article | - |
dc.identifier.doi | 10.1007/s11814-018-0059-z | - |
dc.identifier.bibliographicCitation | KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.35, no.7, pp 1547 - 1555 | - |
dc.identifier.kciid | ART002355426 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000437111400018 | - |
dc.identifier.scopusid | 2-s2.0-85046451623 | - |
dc.citation.endPage | 1555 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 1547 | - |
dc.citation.title | KOREAN JOURNAL OF CHEMICAL ENGINEERING | - |
dc.citation.volume | 35 | - |
dc.type.docType | Article | - |
dc.publisher.location | 대한민국 | - |
dc.subject.keywordAuthor | High-temperature PEMFC | - |
dc.subject.keywordAuthor | Oxygen Reduction Reaction | - |
dc.subject.keywordAuthor | Phosphoric Acid Poisoning | - |
dc.subject.keywordAuthor | PtCu-alloy Catalysts | - |
dc.subject.keywordAuthor | Density Functional Theory (DFT) Study | - |
dc.subject.keywordPlus | OXYGEN-REDUCTION REACTION | - |
dc.subject.keywordPlus | SURFACE ELECTRONIC-STRUCTURE | - |
dc.subject.keywordPlus | PHOSPHORIC-ACID | - |
dc.subject.keywordPlus | ELECTROCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | PARTICLE-SIZE | - |
dc.subject.keywordPlus | ORR ACTIVITY | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
84, Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea (06974)02-820-6194
COPYRIGHT 2019 Chung-Ang 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.