Ag2S-CoS hetero-nanowires terminated with stepped surfaces for improved oxygen evolution reaction

DC Field Value Language Lee, Changsoo ko Lee, Chulhee ko Shin, Kihyun ko Song, Taeyoung ko Jeong, Hu Young ko Jeon, Duk Young ko Lee, Hyuck Mo ko 2019-07-31T06:17:56Z - 2019-07-29 ko 2019-09 ko
dc.identifier.citation CATALYSIS COMMUNICATIONS, v.129, pp.105749 ko
dc.identifier.issn 1566-7367 ko
dc.identifier.uri -
dc.description.abstract Water electrolysis has received great attention for producing hydrogen, but sluggish kinetics of oxygen evolution reaction (OER) has remained a big challenge. Recently, cobalt sulfide materials have been widely explored as great choice in highly efficient electrocatalysts due to their good electrical conductivity and bi-functionality toward OER and hydrogen evolution reaction (HER). However, cobalt sulfide shows outstanding HER activity, but its OER activity should be improved. Herein, hexagonal-phase cobalt sulfide (CoS) nanowires with abundant stepped surfaces and defect sites were prepared via a seed-growth approach with silver sulfide (Ag2S) nanoparticles. The Ag2S-CoS hetero-nanowires (HNWs) exhibited excellent electrochemical performances for oxygen evolution reaction (overpotential = 275 mV, Tafel slope = 77.1 mVdec−1, charge transfer resistance = 1.3 Ω) in 1.0 M KOH solution. The origin of superior activity was investigated using a combined experimental and theoretical approach. This work highlights the importance of surface defects for improving oxygen evolution reaction performance of water electrolysis. ko
dc.language 영어 ko
dc.publisher Elsevier B.V. ko
dc.title Ag2S-CoS hetero-nanowires terminated with stepped surfaces for improved oxygen evolution reaction ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85068393417 ko
dc.identifier.wosid 000484651800023 ko
dc.type.rims ART ko
dc.identifier.doi 10.1016/j.catcom.2019.105749 ko
dc.identifier.url ko
Appears in Collections:
UCRF_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show simple item record


  • mendeley


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.