First-principles study on chromium-substituted α-cobalt oxyhydroxides for efficient oxygen evolution reaction

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dc.contributor.authorShamraiz, Umairen_ZA
dc.contributor.authorBadshah, Aminen_ZA
dc.contributor.authorRaza, Bareeraen_ZA
dc.contributor.authorGreen, Ivan R.en_ZA
dc.date.accessioned2022-05-23T08:48:53Zen_ZA
dc.date.available2022-05-23T08:48:53Zen_ZA
dc.date.issued2020-06en_ZA
dc.descriptionCITATION: Shamraiz, U. et al. 2020. First-principles study on chromium-substituted α-cobalt oxyhydroxides for efficient oxygen evolution reaction. ACS Applied Energy Materials, 3(7):6486-6491. doi:10.1021/acsaem.0c00719en_ZA
dc.descriptionThe original publication is available at https://pubs.acs.org/journal/aaemcqen_ZA
dc.description.abstractOwing to their catalytic, electronic, and optical properties, metal hydroxides are extensively used in energy applications. Despite recent progress, the synthesis of monolayer metal hydroxides with unique structures remains a challenge, and their potential use in the oxygen evolution reaction (OER) has not been fully investigated. Herein, the fabrication of chromium-substituted α-cobalt hydroxide through a simple co-precipitation method under optimum conditions at higher pH is described. Such nanostructures can competently catalyze oxygen evolution reactions to produce a current density of 10 mA cm–2 at an overpotential of 240 mV in alkaline medium. Microscopic, electrochemical, and spectroscopic analyses reveal that the exceptional OER performance originates from thin monolayer sheets with exposed active sites and partially due to the substitution of α-CoOOH with Cr. The phase purity is highlighted through powder X-ray diffraction (PXRD), energy-dispersive X-ray (EDX) mapping, and X-ray photoelectron spectroscopy (XPS) analysis.en_ZA
dc.description.urihttps://pubs.acs.org/doi/10.1021/acsaem.0c00719en_ZA
dc.description.versionPublisher’s versionen_ZA
dc.format.extent6 pagesen_ZA
dc.identifier.citationShamraiz, U, Badshah, A, Raza, B & Geen, IR. 2020. First-principles study on chromium-substituted α-cobalt oxyhydroxides for efficient oxygen evolution reaction. ACS Applied Energy Materials, 3(7):6486-6491. https://dx.doi.org/10.1021/acsaem.0c00719.en_ZA
dc.identifier.issn2574-0962 (online)en_ZA
dc.identifier.otherdoi:10.1021/acsaem.0c00719en_ZA
dc.identifier.urihttp://hdl.handle.net/10019.1/125230en_ZA
dc.language.isoen_ZAen_ZA
dc.publisherAmerican Chemical Societyen_ZA
dc.rights.holderAmerican Chemical Societyen_ZA
dc.subjectAnionsen_ZA
dc.subjectElectrodesen_ZA
dc.subjectChemical processesen_ZA
dc.subjectRadiologyen_ZA
dc.subjectX-ray photoelectron spectroscopyen_ZA
dc.titleFirst-principles study on chromium-substituted α-cobalt oxyhydroxides for efficient oxygen evolution reactionen_ZA
dc.typeArticleen_ZA
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