Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이종목 | * |
dc.contributor.author | 이영미 | * |
dc.date.accessioned | 2016-12-28T02:12:39Z | - |
dc.date.available | 2016-12-28T02:12:39Z | - |
dc.date.issued | 2017 | * |
dc.identifier.issn | 0169-4332 | * |
dc.identifier.other | OAK-19684 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/233362 | - |
dc.description.abstract | In this paper, we demonstrate a simple fabrication of bimetallic silver (Ag) and cobalt (Co) nanostructures (AgCo) with various Ag to Co relative contents via electrochemical co-deposition. A series of AgCo catalysts was electrodeposited on glassy carbon (GC) electrodes at −0.57 V vs. SCE in the deposition solutions, containing Ag precursor, Co precursor, Triton X-100, and 0.3 M KNO3 aqueous solution, with various Ag to Co precursor concentration ratios (1:x, x was varied from 3 to 11). The films, deposited with the total deposition charge of 0.042C, were denoted as Ag1Cox. SEM and TEM analyses showed that Ag1Cox formed a structure consisted of flower-like Co grown on tree-like Ag backbones while it had more Co flowers with a greater x. The ORR activities were examined in 0.1 M NaOH solution with rotating disk electrode (RDE) voltammetry and Ag1Co7 showed the best catalytic activity. The co-deposition mechanism was further investigated by varying the deposition time of Ag1Co7. At the early stage of deposition, Ag-tree branches were formed predominantly, followed by the growth of flower-like Co nanostructures on the Ag nanotrees: More Co flowers were produced on Ag backbones with longer deposition time, being attributed to both a less negative reduction potential of Ag+ to Ag than Co2+ to Co and promoted Co2+ reduction on the initially formed Ag surface. Ag1Co7 electrodeposited for 200 s, consisted of ∼14% Co, showed the greatest ORR catalytic activity which was better or comparable to noble metal Pt. © 2016 Elsevier B.V. | * |
dc.language | English | * |
dc.publisher | Elsevier B.V. | * |
dc.subject | Bimetallic electrocatalyst | * |
dc.subject | Cobalt | * |
dc.subject | Nanotree | * |
dc.subject | Oxygen reduction reaction | * |
dc.subject | Silver | * |
dc.title | One-pot electrodeposition of cobalt flower-decorated silver nanotrees for oxygen reduction reaction | * |
dc.type | Article | * |
dc.relation.volume | 394 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 267 | * |
dc.relation.lastpage | 274 | * |
dc.relation.journaltitle | Applied Surface Science | * |
dc.identifier.doi | 10.1016/j.apsusc.2016.10.068 | * |
dc.identifier.wosid | WOS:000389152900031 | * |
dc.identifier.scopusid | 2-s2.0-84993989933 | * |
dc.author.google | Cho Y.-B. | * |
dc.author.google | Moon S. | * |
dc.author.google | Lee C. | * |
dc.author.google | Lee Y. | * |
dc.contributor.scopusid | 이종목(55812178500) | * |
dc.contributor.scopusid | 이영미(35237907700) | * |
dc.date.modifydate | 20240422130854 | * |