Dumbbell-Shaped Ternary Transition-Metal (Cu, Ni, Co) Phosphate Bundles: A Promising Catalyst for the Oxygen Evolution Reaction

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dc.contributor.authorSingh, Harjinder
dc.contributor.authorBiswas, Rathindranath
dc.contributor.authorAhmed, Imtiaz
dc.contributor.authorThakur, Pooja
dc.contributor.authorKundu, Avinava
dc.contributor.authorPanigrahi, Abhishek Ramachandra
dc.contributor.authorBanerjee, Biplab
dc.contributor.authorHalder, Krishna Kamal
dc.contributor.authorLahtinen, Jouko
dc.contributor.authorMondal, Krishnakanta
dc.contributor.authorHaldar, Krishna Kanta
dc.date.accessioned2024-01-21T10:32:58Z
dc.date.accessioned2024-08-13T11:16:41Z
dc.date.available2024-01-21T10:32:58Z
dc.date.available2024-08-13T11:16:41Z
dc.date.issued2022-01-27T00:00:00
dc.description.abstractDevelopment of economical and high-performance electrocatalysts for the oxygen evolution reaction (OER) is of tremendous interest for future applications as sustainable energy materials. Here, a unique member of efficient OER electrocatalysts has been developed based upon structurally versatile dumbbell-shaped ternary transition-metal (Cu, Ni, Co) phosphates with a three-dimensional (3D) (Cu2(OH)(PO4)/Ni3(PO4)2�8H2O/Co3(PO4)2�8H2O) (CNCP) structure. This structure is prepared using a simple aqueous stepwise addition of metal ion source approach. Various structural investigations demonstrate highly crystalline nature of the composite structure. Apart from the unique structural aspect, it is important that the CNCP composite structure has proved to be an excellent electrocatalyst for OER performance in comparison with its binary or constituent phosphate under alkaline and neutral conditions. Notably, the CNCP electrocatalyst displays a much lower overpotential of 224 mV at a current density of 10 mA cm-2 and a lower Tafel slope of 53 mV dec-1 with high stability in alkaline medium. In addition, X-ray photoelectron spectroscopy analysis suggested that the activity and long-term durability for the OER of the ternary 3D metal phosphate are due to the presence of electrochemically dynamic constituents such as Ni and Co and their resulting synergistic effects, which was further supported by theoretical studies. Theoretical calculations also reveal that the incredible OER execution was ascribed to the electron redistribution set off in the presence of Ni and Cu and the most favorable interaction between the *OOH intermediate and the active sites of CNCP. This work may attract the attention of researchers to construct efficient 3D ternary metal phosphate catalysts for various applications in the field of electrochemistry. � 2022 American Chemical Society.en_US
dc.identifier.doi10.1021/acsami.1c20356
dc.identifier.issn19448244
dc.identifier.urihttp://10.2.3.109/handle/32116/3228
dc.identifier.urlhttps://pubs.acs.org/doi/10.1021/acsami.1c20356
dc.language.isoen_USen_US
dc.publisherAmerican Chemical Societyen_US
dc.subjectbundleen_US
dc.subjectdumbbell-shapeden_US
dc.subjectelectrocatalysten_US
dc.subjectOERen_US
dc.subjectternary phosphateen_US
dc.titleDumbbell-Shaped Ternary Transition-Metal (Cu, Ni, Co) Phosphate Bundles: A Promising Catalyst for the Oxygen Evolution Reactionen_US
dc.title.journalACS Applied Materials and Interfacesen_US
dc.typeArticleen_US
dc.type.accesstypeClosed Accessen_US

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