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Nanocrystalline and coarse grained polycrystalline nickel catalysts for the hydrogen evolution reaction


Grubač, Zoran; Metikoš-Huković, Mirjana; Babić, Ranko
Nanocrystalline and coarse grained polycrystalline nickel catalysts for the hydrogen evolution reaction // International journal of hydrogen energy, 38 (2013), 11; 4437-4444 doi:10.1016/j.ijhydene.2013.01.113 (međunarodna recenzija, članak, znanstveni)


Naslov
Nanocrystalline and coarse grained polycrystalline nickel catalysts for the hydrogen evolution reaction

Autori
Grubač, Zoran ; Metikoš-Huković, Mirjana ; Babić, Ranko

Izvornik
International journal of hydrogen energy (0360-3199) 38 (2013), 11; 4437-4444

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
hydrogen evolution; electrocatalysts; microstructure; spillover; nanocrystalline nickel; EIS

Sažetak
The objective of this work was to rationalize effects on electrocatalytic reactivity of the coarse grained polycrystalline Ni-cathodes: bulk (Ni), foam (3D-Ni), and electrodeposited (ed-Ni) in comparison with effects on reactivity of nanocrystalline nickel catalyst (nc-Ni) for the hydrogen evolution reaction (HER) in 1.0 M NaOH solution. Nickel crystal nanoparticles of the average grain size d = 17 nm in the nc-Ni catalyst initiate spillover of adsorbed hydrogen species while the intercrystalline volume fraction (equal to 39%) acts as the acceptor of these species. The influence of the spillover effect of adsorbed hydrogen to overall rate of HER was investigated in situ using electrochemical impedance spectroscopy (EIS). According to both voltammetry and EIS results the intrinsic reactivity of the polycrystalline Ni-cathodes investigated for the hydrogen evolution reaction increases as follows: ed-Ni  3D-Ni  bulk Ni. The highest catalytic reactivity of nc-Ni cathode results from its favorable microstructural properties.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
125-0982904-2923 - Novi materijali i katalizatori za održive tehnologije (Mirjana Metikoš-Huković, )

Ustanove
Fakultet kemijskog inženjerstva i tehnologije, Zagreb

Citiraj ovu publikaciju

Grubač, Zoran; Metikoš-Huković, Mirjana; Babić, Ranko
Nanocrystalline and coarse grained polycrystalline nickel catalysts for the hydrogen evolution reaction // International journal of hydrogen energy, 38 (2013), 11; 4437-4444 doi:10.1016/j.ijhydene.2013.01.113 (međunarodna recenzija, članak, znanstveni)
Grubač, Z., Metikoš-Huković, M. & Babić, R. (2013) Nanocrystalline and coarse grained polycrystalline nickel catalysts for the hydrogen evolution reaction. International journal of hydrogen energy, 38 (11), 4437-4444 doi:10.1016/j.ijhydene.2013.01.113.
@article{article, year = {2013}, pages = {4437-4444}, DOI = {10.1016/j.ijhydene.2013.01.113}, keywords = {hydrogen evolution, electrocatalysts, microstructure, spillover, nanocrystalline nickel, EIS}, journal = {International journal of hydrogen energy}, doi = {10.1016/j.ijhydene.2013.01.113}, volume = {38}, number = {11}, issn = {0360-3199}, title = {Nanocrystalline and coarse grained polycrystalline nickel catalysts for the hydrogen evolution reaction}, keyword = {hydrogen evolution, electrocatalysts, microstructure, spillover, nanocrystalline nickel, EIS} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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