DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Hee-Tak | ko |
dc.contributor.author | You, Dae Jong | ko |
dc.contributor.author | Yoon, Hae-Kwon | ko |
dc.contributor.author | Joo, Sang Hoon | ko |
dc.contributor.author | Pak, Chanho | ko |
dc.contributor.author | Chang, Hyuk | ko |
dc.contributor.author | Song, In-Seob | ko |
dc.date.accessioned | 2013-08-14T01:44:31Z | - |
dc.date.available | 2013-08-14T01:44:31Z | - |
dc.date.created | 2013-08-08 | - |
dc.date.created | 2013-08-08 | - |
dc.date.issued | 2008-06 | - |
dc.identifier.citation | JOURNAL OF POWER SOURCES, v.180, no.2, pp.724 - 732 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | http://hdl.handle.net/10203/175117 | - |
dc.description.abstract | The development of a cathode catalyst layer based on a supported Pt catalyst using an ordered mesoporous carbon (OMC) for direct methanol fuel cell is reported. An OMC with a mesopore structure between hexagonally arranged carbon nanorods is prepared using a template method. Platinum nanoparticles are supported on the OMC(Pt/OMC) with high metal loading of 60 wt.%. Compositional and morphological variations are made by varying the ionomer content and by compressing the catalyst layer to detect a parameter that determines the power performance. Increase in power density with decrease in the volume fraction of ionomer in the agglomerate comprising the Pt/OMC and the ionomer indicates that mass transport through the ionomer phase governs the kinetics of oxygen reduction. Impedance spectroscopic analysis suggests that a significant mass-transport limitation occurs at high ionomer content and in the compressed cathode. The power density of the optimum cathode layer, which employs a Pt/OMC catalyst with a Pt loading of 2 mg cm(-2), is greater than that of a catalyst layerwith 6 mg cm(-2) Pt-black catalyst at a voltage higher than 0.4 V. This would lead to a significant reduction in the cost of the membrane electrode assembly. (C) 2008 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | GAS-DIFFUSION ELECTRODES | - |
dc.subject | ELECTROCHEMICAL IMPEDANCE | - |
dc.subject | PLATINUM NANOPARTICLES | - |
dc.subject | PROTON CONDUCTIVITY | - |
dc.subject | AC-IMPEDANCE | - |
dc.subject | PERFORMANCE | - |
dc.subject | DMFC | - |
dc.subject | NAFION | - |
dc.subject | MICROSTRUCTURE | - |
dc.subject | FABRICATION | - |
dc.title | Cathode catalyst layer using supported Pt catalyst on ordered mesoporous carbon for direct methanol fuel cell | - |
dc.type | Article | - |
dc.identifier.wosid | 000256392700006 | - |
dc.identifier.scopusid | 2-s2.0-42749095515 | - |
dc.type.rims | ART | - |
dc.citation.volume | 180 | - |
dc.citation.issue | 2 | - |
dc.citation.beginningpage | 724 | - |
dc.citation.endingpage | 732 | - |
dc.citation.publicationname | JOURNAL OF POWER SOURCES | - |
dc.identifier.doi | 10.1016/j.jpowsour.2008.02.081 | - |
dc.contributor.localauthor | Kim, Hee-Tak | - |
dc.contributor.nonIdAuthor | You, Dae Jong | - |
dc.contributor.nonIdAuthor | Yoon, Hae-Kwon | - |
dc.contributor.nonIdAuthor | Joo, Sang Hoon | - |
dc.contributor.nonIdAuthor | Pak, Chanho | - |
dc.contributor.nonIdAuthor | Chang, Hyuk | - |
dc.contributor.nonIdAuthor | Song, In-Seob | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | fuel cell catalyst | - |
dc.subject.keywordAuthor | membrane electrode assembly | - |
dc.subject.keywordAuthor | direct methanol fuel cell | - |
dc.subject.keywordAuthor | ordered mesoporous carbon | - |
dc.subject.keywordAuthor | agglomerate | - |
dc.subject.keywordAuthor | power density | - |
dc.subject.keywordPlus | GAS-DIFFUSION ELECTRODES | - |
dc.subject.keywordPlus | ELECTROCHEMICAL IMPEDANCE | - |
dc.subject.keywordPlus | PLATINUM NANOPARTICLES | - |
dc.subject.keywordPlus | PROTON CONDUCTIVITY | - |
dc.subject.keywordPlus | AC-IMPEDANCE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | DMFC | - |
dc.subject.keywordPlus | NAFION | - |
dc.subject.keywordPlus | MICROSTRUCTURE | - |
dc.subject.keywordPlus | FABRICATION | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.