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A Pt/MnV2O6 nanocomposite for the borohydride oxidation reaction
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- Milikić, J. (författare)
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia b CeFEMA, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal c Project Coordination Implementation and Research Center, Erzurum Technical University, Erzurum, Turkey d Faculty of Engineering, Chemical Engineering Department, Istanbul University-Cerrahpasa, 34320 Avcilar, Istanbul, Turkey e Department of Chemical Engineering, Atatürk University, Erzurum, Turkey,Univ Belgrade, Fac Phys Chem, Studentski Trg 12-16, Belgrade 11158, Serbia.
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- Martins, M. (författare)
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia b CeFEMA, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal c Project Coordination Implementation and Research Center, Erzurum Technical University, Erzurum, Turkey d Faculty of Engineering, Chemical Engineering Department, Istanbul University-Cerrahpasa, 34320 Avcilar, Istanbul, Turkey e Department of Chemical Engineering, Atatürk University, Erzurum, Turkey,Univ Lisbon, Inst Super Tecn, CeFEMA, Lisbon, Portugal.
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- Dobrota, A. S. (författare)
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia b CeFEMA, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal c Project Coordination Implementation and Research Center, Erzurum Technical University, Erzurum, Turkey d Faculty of Engineering, Chemical Engineering Department, Istanbul University-Cerrahpasa, 34320 Avcilar, Istanbul, Turkey e Department of Chemical Engineering, Atatürk University, Erzurum, Turkey,Univ Belgrade, Fac Phys Chem, Studentski Trg 12-16, Belgrade 11158, Serbia.
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- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia b CeFEMA, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal c Project Coordination Implementation and Research Center, Erzurum Technical University, Erzurum, Turkey d Faculty of Engineering, Chemical Engineering Department, Istanbul University-Cerrahpasa, 34320 Avcilar, Istanbul, Turkey e Department of Chemical Engineering, Atatürk University, Erzurum, Turkey Univ Belgrade, Fac Phys Chem, Studentski Trg 12-16, Belgrade 11158, Serbia (creator_code:org_t)
- Elsevier B.V. 2021
- 2021
- Engelska.
- Ingår i: Journal of Energy Challenges and Mechanics. - : Elsevier B.V.. - 2056-9386. ; 55, s. 428-436
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Problems associated with carbon support corrosion under operating fuel cell conditions require the identification of alternative supports for platinum-based nanosized electrocatalysts. Platinum supported on manganese vanadate (Pt/MnV2O6) was prepared by microwave irradiation method and characterized using X-ray diffraction, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy with energy dispersive spectroscopy, and transmission electron microscopy. The borohydride oxidation reaction (BOR) on Pt/MnV2O6 was studied in highly alkaline media using voltammetry, chronoamperometry, and electrochemical impedance spectroscopy. BOR electrocatalytic activity of Pt/MnV2O6 was also compared with that of commercial Pt/C (46 wt% Pt) electrocatalyst. The apparent activation energy of BOR at Pt/MnV2O6 was estimated to be 32 kJ mol−1 and the order of reaction to be 0.51, indicating that borohydride hydrolysis proceeds in parallel with its oxidation. Long-term stability of Pt/MnV2O6 under BOR typical conditions was observed. A laboratory-scale direct borohydride fuel cell assembled with a Pt/MnV2O6 anode reached a specific power of 274 W g−1. Experimental results on Pt/MnV2O6 were complemented by DFT calculations, which indicated good adherence of Pt to MnV2O6, beneficial for electrocatalyst stability.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Nyckelord
- Borohydride oxidation reaction
- Density functional theory
- Manganese vanadate
- Platinum-based electrocatalyst
- Activation energy
- Chronoamperometry
- Direct borohydride fuel cells (DBFC)
- Electrocatalysts
- Electrochemical corrosion
- Electrochemical impedance spectroscopy
- Energy dispersive spectroscopy
- Fourier transform infrared spectroscopy
- High resolution transmission electron microscopy
- Microwave irradiation
- Oxidation
- Scanning electron microscopy
- X ray photoelectron spectroscopy
- Apparent activation energy
- Borohydride oxidation
- Carbon support
- DFT calculation
- Electrocatalytic activity
- Long term stability
- Order of reaction
- Specific power
- Manganese metallography
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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- Journal of Energy Challenges and Mechanics (Sök värdpublikationen i LIBRIS)
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- Milikić, J.
- Martins, M.
- Dobrota, A. S.
- Bozkurt, G.
- Soylu, G. S. P.
- Yurtcan, A. B.
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- Santos, D. M. F.
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