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  • Yang, YiKTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Chem, S-10044 Stockholm, Sweden. (author)

Tuning Catalytic Activity of Ni-Co Nanoparticles Synthesized by Gamma-Radiolytic Reduction of Acetate Aqueous Solutions

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • Wiley-Blackwell,2023
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-512763
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-512763URI
  • https://doi.org/10.1002/admi.202300038DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-331573URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • QC 20230711
  • Transition metal-based catalysts show great potential to replace Pt-based material in energy conversion devices thanks to their low cost, reasonable intrinsic activity, thermodynamic stability, and corrosion resistance. The electrochemical performance of such catalysts is sensitive to their composition and structure. Here, it is demonstrated that homogeneous alloy nanoparticles with varying Ni-to-Co ratio and controlled structure can be synthesized from aqueous Ni(Co) acetate solutions using a facile gamma-radiolytic reduction method. The obtained samples are found to possess defects that are ordered to form polytypes structures. The concentration of these defects depends on the Ni-to-Co ratio, as supported by the results of ab initio calculations. It is found that structural defects may influence the activity of catalysts toward the oxygen evolution reaction, while this effect is less pronounced with respect to the oxygen reduction reaction. At the same time, the activity of Ni-Co catalysts in the hydrogen evolution reaction is affected by formation of Ni-OH bonds on the surface rather than by the presence of structural defects. This study demonstrates that the composition of Ni-Co nanoparticles is an essential factor affecting their structure, and both composition and structure can be tuned to optimize electrochemical performance with respect to various catalytic reactions.

Subject headings and genre

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  • Korzhavyi, Pavel A.,1966-KTH,Egenskaper,KTH Royal Inst Technol, Dept Mat Sci & Engn, SE-10044 Stockholm, Sweden.(Swepub:kth)u17nfa0i (author)
  • Nikolaychuk, Pavel A.TU Wien, Inst Mat Sci & Technol, Getreidemarkt 9, A-1060 Vienna, Austria.,Institute of Materials Science and Technology, TU Wien, Getreidemarkt 9, Wien, 1060, Austria, Getreidemarkt 9 (author)
  • Bazarkina, Elena F.Rossendorf Beamline ESRF The European Synchrotron, CS40220, F-38043 Grenoble 9, France.;Helmholtz Zentrum Dresden Rossendorf HZDR, Inst Resource Ecol, POB 510119, D-01314 Dresden, Germany.,The Rossendorf Beamline at ESRF—The European Synchrotron, CS40220, CEDEX 9, Grenoble, 38043, France, CS40220, CEDEX 9; Institute of Resource Ecology, Helmholtz Zentrum Dresden-Rossendorf (HZDR), PO Box 510119, 01314, Dresden, Germany, PO Box 510119 (author)
  • Kvashnina, Kristina O.Rossendorf Beamline ESRF The European Synchrotron, CS40220, F-38043 Grenoble 9, France.;Helmholtz Zentrum Dresden Rossendorf HZDR, Inst Resource Ecol, POB 510119, D-01314 Dresden, Germany.,The Rossendorf Beamline at ESRF—The European Synchrotron, CS40220, CEDEX 9, Grenoble, 38043, France, CS40220, CEDEX 9; Institute of Resource Ecology, Helmholtz Zentrum Dresden-Rossendorf (HZDR), PO Box 510119, 01314, Dresden, Germany, PO Box 510119 (author)
  • Butorin, SergeiUppsala universitet,Energimaterialens fysik,Condensed Matter Physics of Energy Materials, X-ray Photon Science, Department of Physics and Astronomy, Uppsala University, PO Box 516, Uppsala, SE-75120, Sweden, PO Box 516(Swepub:uu)sergbuto (author)
  • Tarakina, Nadezda V.Max Planck Inst Colloids & Interfaces, Potsdam Sci Pk,Muhlenberg 1 OT Golm, D-14476 Potsdam, Germany.,Max-Planck-Institut für Kolloid-und Grenzflächenforschung, Potsdam Science Park, Am Mühlenberg 1 OT Golm, 14476, Potsdam, Germany, Am Mühlenberg 1 OT Golm (author)
  • Soroka, InnaKTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Chem, S-10044 Stockholm, Sweden.(Swepub:kth)u101oxae (author)
  • KTHTillämpad fysikalisk kemi (creator_code:org_t)

Related titles

  • In:Advanced Materials Interfaces: Wiley-Blackwell10:172196-7350

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