Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Faculty Publications Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Shetty, Ankith; Mukherjee, Poulami; Higashimine, Koichi; Taniike, Toshiaki; R. S., Vishwanath; Sunajadevi, Kalathiparambil Rajendra Pai Title A name given to the resource Hydrous nickel oxyhydroxide thin films on copper foil as robust electrocatalysts for alkaline oxygen evolution Date A point or period of time associated with an event in the lifecycle of the resource 01-01-2026 Source A related resource from which the described resource is derived Catalysis Science and Technology;Volume;16;Issue;6;pp.2205-2216 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1039/d5cy01321f" target="_blank" rel="noreferrer noopener">https://doi.org/10.1039/d5cy01321f</a> <br /><br /><a href="https://www.scopus.com/pages/publications/105031568372?origin=resultslist" target="_blank" rel="noreferrer noopener">https://www.scopus.com/pages/publications/105031568372?origin=resultslist</a> Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Shetty A., Centre for Research in Functional Materials (CRFM), JAIN (Deemed-to-be University), Jain Global Campus, Karnataka, Bengaluru, 562112, India; Mukherjee P., Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Ishikawa, Nomi, 923-1292, Japan; Higashimine K., Center for Nano Materials and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Ishikawa, Nomi, 923-1292, Japan; Taniike T., Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Ishikawa, Nomi, 923-1292, Japan; R. S. V., Centre for Research in Functional Materials (CRFM), JAIN (Deemed-to-be University), Jain Global Campus, Karnataka, Bengaluru, 562112, India; Sunajadevi K.R.P., Department of Chemistry, Christ University, Karnataka, Bengaluru, 560029, India Description An account of the resource Balancing catalytic activity and durability remains a major challenge for nickel-based oxygen evolution reaction (OER) electrodes, especially when supported on earth-abundant metals. Here, we demonstrate how the electrodeposition environment governs the structural and electrochemical evolution of nickel coatings on copper foil toward hydrous NiOOH active layers. Nickel was electrodeposited from sulfate baths at pH 3 and 4 to yield compact (Ni-Cuf-3) and hierarchically nodular (Ni-Cuf-4) films, respectively. Structural and electrochemical analyses reveal that deposition pH dictates the oxidemetal coupling and, consequently, the OER performance. Ni-Cuf-4 exhibited a lower overpotential (434 mV at 50 mA cm?2) and approximately tenfold higher Cdl (2.68 mF cm?2vs. 0.221 mF cm?2), corresponding to a larger density of electrochemically accessible sites. In contrast, Ni-Cuf-3 delivered a higher turnover frequency (TOF ?1 O2 s?1 per Ni site) and superior durability (?60 h at 800 mA cm?2). Impedance spectroscopy highlights distinct interfacial charge transfer characteristics arising from the different film morphology. Importantly, both electrodes achieve reduced nickel loading while suppressing copper dissolution, offering a sustainable pathway to durable, cost-effective OER catalysts. This journal is The Royal Society of Chemistry, 2026 Publisher An entity responsible for making the resource available Royal Society of Chemistry Relation A related resource ISSN: 20444753; CODEN: CSTAG Language A language of the resource English Type The nature or genre of the resource Article Rights Information about rights held in and over the resource Restricted Access; Hardcopy may be available in the library Format The file format, physical medium, or dimensions of the resource online