Experimental and DFT study of CoCuMo ternary ionic activator for alkaline HER on Ni cathode
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AuthorsMaslovara, Slađana Lj.
Vasić Anićijević, Dragana D.
Brković, Snežana M.
Tasić, Gvozden S.
Marčeta Kaninski, Milica
Article (Published version)
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In this work, nickel (Ni) cathode for hydrogen evolution reaction (HER) in alkaline medium, was modified by a combination of in situ ionic activators, based on three d-metals (Co, Cu and Mo). Catalytic performance of new Co-Cu-Mo cathode was improved compared to pure Ni in view of both increased HER reaction rate and improved energy efficiency - reduction of energy consumption of a model electrolytic cell by 15%. We discussed obtained results in comparison with previously investigated similar systems (Ni-Co-Mo and Ni-Cu-Mo). In addition, we perform a detailed surface characterization by a series of experimental techniques (XRF, XRD, SEM, profilometry and EIS) and employ DFT calculations to provide a more detailed discussion of the origin of obtained catalytic performance. © 2019 Elsevier B.V.
Keywords:Hydrogen evolution reaction / Ionic activators / In-situ activation / Alkaline electrolysis / Electrocatalysis / Density Functional Theory
Source:Journal of Electroanalytical Chemistry, 2019, 839, 224-230
- Hydrogen Energy - Research and Development of New Materials: Electrolytic Hydrogen Production, Hydrogen Fuel Cells, Isotope Effects (RS-172045)
ISSN: 1572-6657 (print); 1873-2569 (electronic)