Publication: NiMo/CoMoO4 heterostructure with confined oxygen vacancy for active and durable alkaline hydrogen evolution reaction
dc.contributor.coauthor | Erdem, Emre | |
dc.contributor.department | Department of Chemistry | |
dc.contributor.department | KUBAM (Koç University Boron and Advanced Materials Application and Research Center) | |
dc.contributor.department | Graduate School of Sciences and Engineering | |
dc.contributor.kuauthor | Aydemir, Umut | |
dc.contributor.kuauthor | Sadeghi, Ebrahim | |
dc.contributor.kuauthor | Chamani, Sanaz | |
dc.contributor.kuauthor | Peighambardoust, Naeimeh Sadat | |
dc.contributor.schoolcollegeinstitute | College of Sciences | |
dc.contributor.schoolcollegeinstitute | GRADUATE SCHOOL OF SCIENCES AND ENGINEERING | |
dc.contributor.schoolcollegeinstitute | Research Center | |
dc.date.accessioned | 2025-01-19T10:28:35Z | |
dc.date.issued | 2023 | |
dc.description.abstract | The sluggish kinetics of electrocatalysts in the alkalinehydrogenevolution reaction (HER) is a critical challenge to attain efficientprogress in water electrolysis for carbon-neutral hydrogen production.Here, we present a high-performance and durable heterostructure ofNiMo/CoMoO4 for the alkaline HER constructed via a two-potin situ growth strategy on a nickel foam (NF). The density of activesites and the surface area of the hybrid catalyst augmented almostthree-fold compared to those of pristine CoMoO4. The heterostructurecomposed of metallic NiMo and oxygen vacancy (O-v)-confinedCoMoO(4) facilitated the H adsorption on the metallic sideand OH adsorption on the oxide side. The hierarchical hybrid catalyston NF featured a low overpotential of 102 mV at 10 mA cm(-2), approaching that of platinum on carbon (83 mV) in 1.0 M KOH. Theturnover frequency of 0.012 s(-1) at the overpotentialof 100 mV of NiMo/CoMoO4 is six times higher than thatof CoMoO4, 0.002 s(-1). In addition, thefabricated heterostructure is a highly durable HER catalyst at 30mA cm(-2) for 30 h. The Faradaic efficiency recordedby a gas chromatograph at 10 and 100 mA cm(-2) revealednearly 100 and 86-95% hydrogen production efficiency, respectively. | |
dc.description.indexedby | WOS | |
dc.description.indexedby | Scopus | |
dc.description.issue | 14 | |
dc.description.openaccess | hybrid | |
dc.description.publisherscope | International | |
dc.description.sponsoredbyTubitakEu | N/A | |
dc.description.volume | 6 | |
dc.identifier.doi | 10.1021/acsaem.3c01146 | |
dc.identifier.issn | 2574-0962 | |
dc.identifier.quartile | Q2 | |
dc.identifier.scopus | 2-s2.0-85165920336 | |
dc.identifier.uri | https://doi.org/10.1021/acsaem.3c01146 | |
dc.identifier.uri | https://hdl.handle.net/20.500.14288/25754 | |
dc.identifier.wos | 1023123500001 | |
dc.keywords | Electrocatalysis | |
dc.keywords | Hydrogen evolution reaction | |
dc.keywords | Oxygen vacancy | |
dc.keywords | Metal oxides | |
dc.keywords | Heterostructure | |
dc.language.iso | eng | |
dc.publisher | American Chemical Society | |
dc.relation.ispartof | ACS Applied Energy Materials | |
dc.subject | Chemistry, physical | |
dc.subject | Energy and fuels | |
dc.subject | Materials science, multidisciplinary | |
dc.title | NiMo/CoMoO4 heterostructure with confined oxygen vacancy for active and durable alkaline hydrogen evolution reaction | |
dc.type | Journal Article | |
dspace.entity.type | Publication | |
local.contributor.kuauthor | Aydemir, Umut | |
local.contributor.kuauthor | Peighambardoust, Naeimeh Sadat | |
local.contributor.kuauthor | Chamani, Sanaz | |
local.contributor.kuauthor | Sadeghi, Ebrahim | |
local.publication.orgunit1 | College of Sciences | |
local.publication.orgunit1 | GRADUATE SCHOOL OF SCIENCES AND ENGINEERING | |
local.publication.orgunit1 | Research Center | |
local.publication.orgunit2 | Department of Chemistry | |
local.publication.orgunit2 | KUBAM (Koç University Boron and Advanced Materials Application and Research Center) | |
local.publication.orgunit2 | Graduate School of Sciences and Engineering | |
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