Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김동하 | * |
dc.date.accessioned | 2018-01-11T16:30:40Z | - |
dc.date.available | 2018-01-11T16:30:40Z | - |
dc.date.issued | 2017 | * |
dc.identifier.issn | 2196-7350 | * |
dc.identifier.other | OAK-21599 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/239709 | - |
dc.description.abstract | Stable alternative catalyst supports to replace conventional carbon-based materials in polymer electrolyte membrane fuel cells (PEMFCs) are being explored to achieve dramatic improvements in the performance and durability of fuel cells. Herein, conductive Ti3+ self-doped and carbon-coated TiO2-reduced graphene oxide (rGO) hollow nanosphere-supported Pt nanoparticles (Pt/rGO/TiO2) are investigated as cathode electrocatalysts for PEMFCs. Importantly, the rGO/TiO2 hollow nanospheres display excellent electrochemical stability under high potential cycling (1.2-1.7 V) compared with conventional carbon black (CB) support materials that normally induce electrochemical corrosion during fuel cell operation. The Pt/rGO/TiO2 is tested to establish its catalytic activity and stability using accelerated durability testing that mimics the conditions and degradation modes encountered during long-term fuel cell operation. The Pt/rGO/TiO2 cathode catalyst demonstrates comparable catalytic activity toward oxygen reduction and exhibits much higher stability than the Pt/CB one at high potentials in terms of minimal loss of the Pt electrochemical surface area. More importantly, Pt/rGO/TiO2 displays a negligible voltage drop over long-term cycling during practical fuel cell operation. The high stability of the Pt/rGO/TiO2 electrocatalyst synthesized in this investigation offers a new approach to improve the reliability and durability of PEMFC cathode catalysts. | * |
dc.language | English | * |
dc.publisher | WILEY | * |
dc.subject | catalyst support | * |
dc.subject | enhanced stability | * |
dc.subject | hollow structures | * |
dc.subject | PEMFCs | * |
dc.subject | rGO/TiO2 | * |
dc.title | Enhanced Stability and Electrochemical Performance of Carbon-Coated Ti3+ Self-Doped TiO2-Reduced Graphene Oxide Hollow Nanostructure-Supported Pt-Catalyzed Fuel Cell Electrodes | * |
dc.type | Article | * |
dc.relation.issue | 21 | * |
dc.relation.volume | 4 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | ADVANCED MATERIALS INTERFACES | * |
dc.identifier.doi | 10.1002/admi.201700564 | * |
dc.identifier.wosid | WOS:000415903000006 | * |
dc.identifier.scopusid | 2-s2.0-85028341622 | * |
dc.author.google | Sung, Chang Hyun | * |
dc.author.google | Boppella, Ramireddy | * |
dc.author.google | Yoo, Jai-Wook | * |
dc.author.google | Lim, Dong-Hee | * |
dc.author.google | Moon, Byung-Moo | * |
dc.author.google | Kim, Dong Ha | * |
dc.author.google | Kim, Jin Young | * |
dc.contributor.scopusid | 김동하(26039227400) | * |
dc.date.modifydate | 20240123104500 | * |