Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이종목 | * |
dc.contributor.author | 이영미 | * |
dc.date.accessioned | 2023-01-06T16:31:08Z | - |
dc.date.available | 2023-01-06T16:31:08Z | - |
dc.date.issued | 2023 | * |
dc.identifier.issn | 0169-4332 | * |
dc.identifier.issn | 1873-5584 | * |
dc.identifier.other | OAK-32738 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/263121 | - |
dc.description.abstract | Fe-Cu-Rh ternary alloy nanofibers having various elemental compositions (x-Fe@Cu-Rh) were synthesized through the thermal hydrogen reduction of Fe-substituted CuRh2O4 nanofibers, which were prepared by elec-trospinning of a solution containing Cu and Rh precursors at a constant molar ratio (Cu:Rh = 1:2) with varying Fe precursor wt% (x = 6, 12, 24, 48 and 80). A series of x-Fe@Cu-Rh nanofibers were composed of the phases of metallic (fcc) and/or spinel CuRh2O4 where Fe ion substitutes primarily Rh ion in the octahedral site. x-Fe@Cu-Rh ternary alloy nanofibers showed higher pH-universal HER activity than pure Rh and Cu-Rh binary coun-terparts; and particularly, 12-Fe@Cu-Rh composed of 7.3, 27.2 and 65.5 atomic % of Fe, Cu and Rh, respectively, presented a superb activity (e.g., the most positive onset potential and the smallest Tafel slope) along with reasonable stability, even outperforming commercial Pt. The addition of Fe to Cu-Rh binary system improved alkaline HER activity substantially, proposing the crucial role of Fe-Cu-Rh interfaces for facilitating water molecule adsorption/dissociation. In acidic condition, Fe served as an excellent diluent reducing noble Rh content without deteriorating the acidic HER activity. Surprisingly, 80-Fe@Cu-Rh having only 18.5 atomic % of noble Rh exhibited decent HER activity during 24 h, demonstrating its potential as a stable and economic catalyst particularly for acidic HER. | * |
dc.language | English | * |
dc.publisher | ELSEVIER | * |
dc.subject | Iron-copper-rhodium ternary alloy | * |
dc.subject | Electrospinning | * |
dc.subject | Nanofiber | * |
dc.subject | Hydrogen evolution reaction | * |
dc.subject | pH-universal electrocatalyst | * |
dc.title | Fe-Cu-Rh ternary alloy nanofibers as an outstanding pH-universal electrocatalyst for hydrogen evolution reaction: The catalytic roles of Fe depending on pH | * |
dc.type | Article | * |
dc.relation.volume | 611 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | APPLIED SURFACE SCIENCE | * |
dc.identifier.doi | 10.1016/j.apsusc.2022.155484 | * |
dc.identifier.wosid | WOS:000907537900001 | * |
dc.identifier.scopusid | 2-s2.0-85142279820 | * |
dc.author.google | Nam, Yoonhee | * |
dc.author.google | Jin, Dasol | * |
dc.author.google | Lee, Chongmok | * |
dc.author.google | Lee, Youngmi | * |
dc.contributor.scopusid | 이종목(55812178500) | * |
dc.contributor.scopusid | 이영미(35237907700) | * |
dc.date.modifydate | 20240422130854 | * |