Show simple item record

AuthorNath, Narayan Chandra Deb
AuthorJeong, Hye Won
AuthorHan, Dong Suk
AuthorPark, Hyunwoong
AuthorLee, Jae Joon
Available date2022-12-19T12:08:19Z
Publication Date2020-01-24
Publication NameJournal of the Electrochemical Society
Identifierhttp://dx.doi.org/10.1149/1945-7111/ab6a80
CitationNath, N. C. D., Jeong, H. W., Han, D. S., Park, H., & Lee, J. J. (2020). Facile electrochemical synthesis of highly efficient copper–cobalt oxide nanostructures for oxygen evolution reactions. Journal of The Electrochemical Society, 167(2), 026510.
ISSN0013-4651
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85079549406&origin=inward
URIhttp://hdl.handle.net/10576/37395
AbstractNanostructured copper-cobalt oxide (CuxCo3-xO4, CCO) electrodes are grown directly on conducting substrates via electrochemical deposition; then, various factors (e.g., oxygen vacancies, electrochemically active surface area, and electrical conductivity) affecting their electrocatalytic activity for oxygen evolution reactions (OERs) are studied. The observed OER performance decreases when increasing the annealing temperature due to the nanostructure deformation and agglomeration and the decreased number of oxygen vacancies, electrochemically active surface area, and electrical conductivity. An optimized nanopetal structure of CuxCo3-xO4 (x = 0.95, annealed at 200 °C) shows a considerably high Faradaic efficiency (∼93%) with a remarkably low overpotential (∼230 mV) at a benchmark current density (J) of 10 mA cm-2; at the same J in an alkaline solution (1 M KOH) for OER, it also exhibits high durability (up to 100 h). This study provides a complete guide for designing efficient and robust spinel-type CCO electrocatalysts through a facile electrochemical route.
Sponsor- Qatar National Research Fund (QNRF) - grant #NPRP 10 1210 160019. - National Research Foundations - grant #2019M1A2A2065616, 2019R1A2C2002602. - Ministry of Science, ICT and Future Planning (MSIP)- grant #NRF-2015M1A2A2054996, NRF-2016M1A2A2940912.
Languageen
PublisherElectrochemical Society
SubjectNanostructures
Electrocatalysts
Electrochemical
TitleFacile Electrochemical Synthesis of Highly Efficient Copper-Cobalt Oxide Nanostructures for Oxygen Evolution Reactions
TypeArticle
Issue Number2
Volume Number167
ESSN1945-7111
dc.accessType Abstract Only


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record