There are no files associated with this item.
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 732 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 724 | - |
dc.citation.title | JOURNAL OF POWER SOURCES | - |
dc.citation.volume | 180 | - |
dc.contributor.author | Kim, Hee-Tak | - |
dc.contributor.author | You, Dae Jong | - |
dc.contributor.author | Yoon, Hae-Kwon | - |
dc.contributor.author | Joo, Sang Hoon | - |
dc.contributor.author | Pak, Chanho | - |
dc.contributor.author | Chang, Hyuk | - |
dc.contributor.author | Song, In-Seob | - |
dc.date.accessioned | 2023-12-22T08:39:52Z | - |
dc.date.available | 2023-12-22T08:39:52Z | - |
dc.date.created | 2014-09-30 | - |
dc.date.issued | 2008-06 | - |
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 layer with 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. | - |
dc.identifier.bibliographicCitation | JOURNAL OF POWER SOURCES, v.180, no.2, pp.724 - 732 | - |
dc.identifier.doi | 10.1016/j.jpowsour.2008.02.081 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.scopusid | 2-s2.0-42749095515 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/6733 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=42749095515 | - |
dc.identifier.wosid | 000256392700006 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | Cathode catalyst layer using supported Pt catalyst on ordered mesoporous carbon for direct methanol fuel cell | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Tel : 052-217-1404 / Email : scholarworks@unist.ac.kr
Copyright (c) 2023 by UNIST LIBRARY. All rights reserved.
ScholarWorks@UNIST was established as an OAK Project for the National Library of Korea.