Electrochemical investigations of Co3Fe-RGO as a bifunctional catalyst for oxygen reduction and evolution reactions in alkaline media

Kumar, Surender and Kumar, Divyaratan and Kishore, Brij and Ranganatha, Sudhalcar and Munichandraiah, Nookala and Venkataramanan, Natarajan S (2017) Electrochemical investigations of Co3Fe-RGO as a bifunctional catalyst for oxygen reduction and evolution reactions in alkaline media. In: APPLIED SURFACE SCIENCE, 418 (A). pp. 79-86.

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Abstract

Nanoparticles of Co3Fe alloy is prepared on reduced graphene oxide (RGO) sheets by modified polyol method. Synthesized alloy particles are characterized by various physicochemical techniques. TEM and SEM pictures showed homogeneously dispersed alloy nanoparticles on the RGO sheets. Electrochemistry of alloy nanoparticles is investigated in alkaline medium. The result shows that oxygen evaluation reaction (OER) activity of Co3Fe-RGO is higher than Pt -black particles. RDE studies in alkaline medium shows that oxygen reduction reaction (ORR) follow four electron pathway. It is suggest that Co3Fe-RGO is an efficient non-precious catalyst for oxygen (ORR/OER) reactions in alkaline electrolyte for PEMFC applications. (C) 2016 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	APPLIED SURFACE SCIENCE
Additional Information:	Copy right for this article belongs to ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	21 Jul 2017 07:32
Last Modified:	21 Jul 2017 07:32
URI:	http://eprints.iisc.ac.in/id/eprint/57434

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