DataVXACS Applied Energy MaterialsPaper
journal article·2023-05-08Open access

In Situ Sonoactivation of Polycrystalline Ni for the Hydrogen Evolution Reaction in Alkaline Media

Faranak Foroughi, Marina Tintor, Alaa Y. Faid, Svein Sunde, Gregory Jerkiewicz, Christophe Coutanceau, Bruno G. Pollet

ACS Applied Energy Materials· Volume 6· Issue 9
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Source abstract

Abstract

High Resolution Image Download MS PowerPoint Slide 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 2 -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 –2 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 straightforward strategy for activating nickel-based materials by ultrasonic treatment for the electrochemical water splitting reaction.
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Research context

Energy storage

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Electrochemical Analysis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Hydrogen Energy and Sonochemistry Research Group, Department of Energy and Process Engineering, Faculty of Engineering, Norwegian University of Science and Technology (NTNU), Trondheim NO-7491, Norway

Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario K7L 3N6, Canada

Electrochemistry Research Group, Department of Materials Science and Engineering, Faculty of Natural Sciences, Norwegian University of Science and Technology (NTNU), Trondheim NO-7491, Norway

Catalysis and Non-Conventional Medium group, IC2MP, UMR CNRS 7285, Université de Poitiers, 4 Rue Michel Brunet, 86073 Cedex 9 Poitiers, France

French Research Network on Hydrogen (FRH2), Research Federation n°2044 CNRS, BP 32229, 44322 Nantes CEDEX 3, France

Green Hydrogen Lab, Institute for Hydrogen Research, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Rivières, Québec G9A 5H7, Canada

Funding

Natural Sciences and Engineering Research Council of Canada · Mitacs · Norges Teknisk-Naturvitenskapelige Universitet

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