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Issue 14, 2018
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High performance direct hydrazine–hydrogen peroxide fuel cell using reduced graphene oxide supported Ni@M (M = Pt, Pd, Ru) nanoparticles as novel anodic electrocatalysts

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Abstract

In this study, different core@shell nanoparticles such as Ni@Pt, Ni@Pd and Ni@Ru on reduced graphene oxide (rGO) were synthesized using a two-step successive reduction method with sodium borohydride and ethylene glycol as reducing agents. The obtained electrocatalysts were characterized using field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HR-TEM) and X-ray photoelectron spectroscopy (XPS). The hydrazine oxidation on Ni@Pt/rGO, Ni@Pd/rGO and Ni@Ru/rGO electrocatalysts was studied in a three electrode set-up. The results showed that the hydrazine oxidation current density on Ni@Pd/rGO (19 722 A g−1) is 1.31 and 3.21 times higher than those of Ni@Pt/rGO (15 030 A g−1) and Ni@Ru/rGO (6140 A g−1), respectively. The activation energy for hydrazine oxidation on Ni@Pd/rGO (7.1 kJ mol−1) is lower than that on Ni@Pt/rGO (14.2 kJ mol−1) and Ni@Ru/rGO (28.4 kJ mol−1). Also, the influence of Ni@Pt/rGO, Ni@Pd/rGO and Ni@Ru/rGO as an anodic electrocatalyst on the performance of direct hydrazine–hydrogen peroxide fuel cells (DHHPFCs) was investigated. The single fuel cell results showed that Ni@Pd/rGO resulted in an improvement in power density (204.79 mW cm−2) equal to 10.03% and 47.32% with respect to Ni@Pt/rGO (186.12 mW cm−2) and Ni@Ru/rGO (139.01 mW cm−2), respectively.

Graphical abstract: High performance direct hydrazine–hydrogen peroxide fuel cell using reduced graphene oxide supported Ni@M (M = Pt, Pd, Ru) nanoparticles as novel anodic electrocatalysts

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Publication details

The article was received on 20 Feb 2018, accepted on 16 Jun 2018 and first published on 19 Jun 2018


Article type: Paper
DOI: 10.1039/C8NJ00863A
Citation: New J. Chem., 2018,42, 12222-12233
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    High performance direct hydrazine–hydrogen peroxide fuel cell using reduced graphene oxide supported Ni@M (M = Pt, Pd, Ru) nanoparticles as novel anodic electrocatalysts

    M. G. Hosseini, R. Mahmoodi and M. Abdolmaleki, New J. Chem., 2018, 42, 12222
    DOI: 10.1039/C8NJ00863A

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