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Carbon-supported phosphatized CuNi nanoparticle catalysts for hydrazine electrooxidation
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
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Number of Authors: 62019 (English)In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 44, no 21, p. 10637-10645Article in journal (Refereed) Published
Abstract [en]

Developing non-noble metal catalysts with high performance to reduce the cost of hydrazine fuel cells is urgent. Herein, in this study, a series of carbon-supported phosphatized CuNi catalysts (P--CuxNiy/C) are designed for hydrazine oxidation reaction (HzOR) via high temperature phosphating process. Among them, the P-Cu2Ni/C is found to be a promising candidate for hydrazine electrooxidation. Electrochemical measurement results indicate that the P-Cu2Ni/C catalyst exhibits higher catalytic activity and stability for HzOR in comparison with P-CuNi/C, P-CuNi2/C, Cu2Ni/C, Cu/C and Ni/C catalysts. Additionally, HzOR kinetics are also investigated, and it proves that hydrazine electrooxidation on P-Cu2Ni/C is a diffusion controlled irreversible process. Meanwhile, physical characterization reveals that the catalysts have doped phosphorus successfully. All results demonstrate that as-prepared P-Cu2Ni/C catalyst is a promising electrocatalyst for direct hydrazine fuel cells.

Place, publisher, year, edition, pages
2019. Vol. 44, no 21, p. 10637-10645
Keywords [en]
Phosphatized alloy nanoparticles, Electrocatalyst, Synergistic effect, Hydrazine oxidation reaction
National Category
Chemical Sciences Environmental Engineering
Identifiers
URN: urn:nbn:se:su:diva-169109DOI: 10.1016/j.ijhydene.2019.03.005ISI: 000466618300044OAI: oai:DiVA.org:su-169109DiVA, id: diva2:1321283
Available from: 2019-06-07 Created: 2019-06-07 Last updated: 2019-06-07Bibliographically approved

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Yahia, Mohamed
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