Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이영미 | * |
dc.contributor.author | 김명화 | * |
dc.date.accessioned | 2022-08-12T16:31:29Z | - |
dc.date.available | 2022-08-12T16:31:29Z | - |
dc.date.issued | 2022 | * |
dc.identifier.issn | 2574-0962 | * |
dc.identifier.other | OAK-32055 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/262450 | - |
dc.description.abstract | pH-universal electrocatalysts are desirable for high efficiency of water electrolysis. Herein, we report the facile synthesis of single-phase perovskite SrIrO3 nanofibers (NFs) and demonstrate that SrIrO3 NFs are promising electrocatalysts for the oxygen evolution reaction (OER) in a wide range of pH. Single-phase SrIrO3 NFs were synthesized by electrospinning and subsequent calcination processes, and the electrocatalytic performance of SrIrO3 NFs toward the OER was evaluated under acidic, neutral, and alkaline media. A large surface area due to the NF morphology with an average diameter of 105.5 (+/- 15.5) nm led to enhanced catalytic activity of SrIrO3 NFs, representing smaller overpotentials and Tafel slopes under pH-universal conditions than IrO2/Ir NFs and commercial Ir/C. SrIrO3 NFs also manifested remarkably stable activity for continuous OER operation in all three electrolytes, even though a considerable amount of Sr was leached out of them. The long-lasting high OER activity of SrIrO3 NFs could be ascribed to stable Ir cations taking B sites of the perovskite oxide structure, known as an active site for electrocatalysis. The initial perovskite crystal structure of SrIrO3 was maintained for a certain time even after significant Sr leaching. This work is the first application of SrIrO3 perovskite for pH-universal OER catalysis. | * |
dc.language | English | * |
dc.publisher | AMER CHEMICAL SOC | * |
dc.subject | electrospinning perovskite | * |
dc.subject | iridium | * |
dc.subject | strontium | * |
dc.subject | electrocatalyst | * |
dc.subject | oxygen evolution reaction | * |
dc.title | Single-Phase Perovskite SrIrO3 Nanofibers as a Highly Efficient Electrocatalyst for a pH-Universal Oxygen Evolution Reaction | * |
dc.type | Article | * |
dc.relation.issue | 5 | * |
dc.relation.volume | 5 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 6146 | * |
dc.relation.lastpage | 6154 | * |
dc.relation.journaltitle | ACS APPLIED ENERGY MATERIALS | * |
dc.identifier.doi | 10.1021/acsaem.2c00551 | * |
dc.identifier.wosid | WOS:000832794500090 | * |
dc.identifier.scopusid | 2-s2.0-85130816881 | * |
dc.author.google | Shin, Seungsun | * |
dc.author.google | Kwon, Taehui | * |
dc.author.google | Kim, Kyungmin | * |
dc.author.google | Kim, Minju | * |
dc.author.google | Kim, Myung Hwa | * |
dc.author.google | Lee, Youngmi | * |
dc.contributor.scopusid | 이영미(35237907700) | * |
dc.contributor.scopusid | 김명화(57191596821) | * |
dc.date.modifydate | 20240422130854 | * |