{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["6(9)"],"submitter":["Foroughi F"],"pubmed_abstract":["In this investigation, we report on the development of a method for activating polycrystalline metallic nickel (Ni(poly)) surfaces toward the hydrogen evolution reaction (HER) in N<sub>2</sub>-saturated 1.0 M KOH aqueous electrolyte through continuous and pulsed ultrasonication (24 kHz, 44 ± 1.40 W, 60% acoustic amplitude, ultrasonic horn). It is found that ultrasonically activated Ni shows an improved HER activity with a much lower overpotential of -275 mV vs RHE at -10.0 mA cm<sup>-2</sup> when compared to nonultrasonically activated Ni. It was observed that the ultrasonic pretreatment is a time-dependent process that gradually changes the oxidation state of Ni and longer ultrasonication times result in higher HER activity as compared to untreated Ni. This study highlights a straightforw"],"journal":["ACS applied energy materials"],"pagination":["4520-4529"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10170477"],"repository":["biostudies-literature"],"pubmed_title":["In Situ Sonoactivation of Polycrystalline Ni for the Hydrogen Evolution Reaction in Alkaline Media."],"pmcid":["PMC10170477"],"pubmed_authors":["Foroughi F","Pollet BG","Coutanceau C","Tintor M","Sunde S","Jerkiewicz G","Faid AY"],"additional_accession":[]},"is_claimable":false,"name":"In Situ Sonoactivation of Polycrystalline Ni for the Hydrogen Evolution Reaction in Alkaline Media.","description":"In this investigation, we report on the development of a method for activating polycrystalline metallic nickel (Ni(poly)) surfaces toward the hydrogen evolution reaction (HER) in N<sub>2</sub>-saturated 1.0 M KOH aqueous electrolyte through continuous and pulsed ultrasonication (24 kHz, 44 ± 1.40 W, 60% acoustic amplitude, ultrasonic horn). It is found that ultrasonically activated Ni shows an improved HER activity with a much lower overpotential of -275 mV vs RHE at -10.0 mA cm<sup>-2</sup> when compared to nonultrasonically activated Ni. It was observed that the ultrasonic pretreatment is a time-dependent process that gradually changes the oxidation state of Ni and longer ultrasonication times result in higher HER activity as compared to untreated Ni. This study highlights a straightforw","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 May","modification":"2025-04-04T13:51:06.054Z","creation":"2025-04-04T13:51:06.054Z"},"accession":"S-EPMC10170477","cross_references":{"pubmed":["37181247"],"doi":["10.1021/acsaem.2c02443"]}}