DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, MinJoong | ko |
dc.contributor.author | Kwon, ChoRong | ko |
dc.contributor.author | Eom, KwangSup | ko |
dc.contributor.author | Kim, JiHyun | ko |
dc.contributor.author | Cho, Eunae | ko |
dc.date.accessioned | 2017-05-08T08:49:53Z | - |
dc.date.available | 2017-05-08T08:49:53Z | - |
dc.date.created | 2017-04-18 | - |
dc.date.created | 2017-04-18 | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | SCIENTIFIC REPORTS, v.7 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | http://hdl.handle.net/10203/223550 | - |
dc.description.abstract | This study explores a facile method to prepare an efficient and durable support for Pt catalyst of polymer electrolyte membrane fuel cell (PEMFC). As a candidate, Nb-doped TiO2 (Nb-TiO2) nanofibers are simply fabricated using an electrospinning technique, followed by a heat treatment. Doping Nb into the TiO2 nanofibers leads to a drastic increase in electrical conductivity with doping level of up to 25 at. % (Nb0.25Ti0.75O2). Pt nanoparticles are synthesized on the prepared 25 at. % Nb-doped TiO2-nanofibers (Pt/Nb-TiO2) as well as on a commercial powdered carbon black (Pt/C). The Pt/Nb-TiO2 nanofiber catalyst exhibits similar oxygen reaction reduction (ORR) activity to that of the Pt/C catalyst. However, during an accelerated stress test (AST), the Pt/Nb-TiO2 nanofiber catalyst retained more than 60% of the initial ORR activity while the Pt/C catalyst lost 65% of the initial activity. The excellent durability of the Pt/Nb-TiO2 nanofiber catalyst can be attributed to high corrosion resistance of TiO2 and strong interaction between Pt and TiO2. | - |
dc.language | English | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.subject | MEMBRANE FUEL-CELLS | - |
dc.subject | OXYGEN REDUCTION REACTION | - |
dc.subject | METHANOL OXIDATION | - |
dc.subject | CATALYST SUPPORT | - |
dc.subject | ELECTRICAL-CONDUCTIVITY | - |
dc.subject | CARBON CORROSION | - |
dc.subject | TUNGSTEN-OXIDE | - |
dc.subject | DEGRADATION | - |
dc.subject | ANODE | - |
dc.subject | ENHANCEMENT | - |
dc.title | Electrospun Nb-doped TiO2 nanofiber support for Pt nanoparticles with high electrocatalytic activity and durability | - |
dc.type | Article | - |
dc.identifier.wosid | 000396125800001 | - |
dc.identifier.scopusid | 2-s2.0-85015269264 | - |
dc.type.rims | ART | - |
dc.citation.volume | 7 | - |
dc.citation.publicationname | SCIENTIFIC REPORTS | - |
dc.identifier.doi | 10.1038/srep44411 | - |
dc.contributor.localauthor | Cho, Eunae | - |
dc.contributor.nonIdAuthor | Kwon, ChoRong | - |
dc.contributor.nonIdAuthor | Eom, KwangSup | - |
dc.contributor.nonIdAuthor | Kim, JiHyun | - |
dc.description.isOpenAccess | Y | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | MEMBRANE FUEL-CELLS | - |
dc.subject.keywordPlus | OXYGEN REDUCTION REACTION | - |
dc.subject.keywordPlus | METHANOL OXIDATION | - |
dc.subject.keywordPlus | CATALYST SUPPORT | - |
dc.subject.keywordPlus | ELECTRICAL-CONDUCTIVITY | - |
dc.subject.keywordPlus | CARBON CORROSION | - |
dc.subject.keywordPlus | TUNGSTEN-OXIDE | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | ANODE | - |
dc.subject.keywordPlus | ENHANCEMENT | - |
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