Nanosized catalysts of oxygen reduction reaction prepared on the base of bimetallic cluster compounds
| Autor: | Yan V. Zubavichus, N. A. Mayorova, N.V. Cherkashina, V. V. Vysotskii, I.P. Stolarov, M. N. Vargaftik, A.A. Pasynsky, Vitaly A. Grinberg, Ilya A. Yakushev, Alexander L. Trigub, Andrey A. Shiryaev |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
General Chemical Engineering Thermal decomposition Nanoparticle chemistry.chemical_element 02 engineering and technology Carbon black 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Catalysis Transition metal chemistry Polymer chemistry 0210 nano-technology Platinum Bimetallic strip |
| Zdroj: | Electrochimica Acta. 299:886-893 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2019.01.059 |
| Popis: | A novel approach to synthesis of PtM/C nanoparticulate catalysts based on thermolysis of heterometallic Pt complexes is proposed. Several new heterometallic platinum (II)-based acetate complexes (clusters) with divalent transition metals PtII(OOCMe)4MII(OH2) (M = Co, Mn, Zn, Ni) were synthesized and structurally characterized with X-ray crystallography, IR and NMR spectroscopies. The synthesized clusters were used as precursors of bimetallic supported phase for the fuel cell oxygen reduction reaction. After thermal decomposition of the clusters deposited on carbon black, intermetallics with a Pt: M ≈ 1: 1 ratio were formed. Physico-chemical and electrochemical characteristics of the prepared bimetallic catalysts PtСo/C, PtMn/C PtZn/C and PtNi/C have been investigated. The bimetallic nanoparticles are uniformly distributed over the carbon carrier surface, and grain size in the catalysts is 2–5 nm. The PtZn/C, PtCo/C, PtMn/C and PtNi/C catalysts synthesized from the bimetallic clusters of corresponding metals show advantages over a commercial Pt/C catalyst in the oxygen reduction reaction, PtZn/C in particular, and are promising for use in hydrogen-air fuel cells. |
| Databáze: | OpenAIRE |
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