Electrocatalytic oxygen reduction reaction activity of sodium metal phosphate based insertion cathodes

Sharma, L and Baskar, S and Barpanda, P (2018) Electrocatalytic oxygen reduction reaction activity of sodium metal phosphate based insertion cathodes. In: 233rd Meeting of the Electrochemical Society, 13 - 17 May 2018, Seattle, pp. 1221-1227.

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Abstract

Electrocatalytic oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) properties of Co-based sodium fluorophosphate was studied. Na2CoPO4F, having orthorhombic structure, was synthesized by solution combustion method. The morphology was studied using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The material exhibits an onset potential of 0.854 V vs. RHE with a current density of 5.84 mA cm-2 during ORR reaction while during OER an onset potential of 1.591 V vs. RHE was observed. Aqueous Na-air battery was fabricated using Na2CoPO4F as air-cathode and excellent (dis)charge properties were observed.

Item Type:	Conference Paper
Publication:	ECS Transactions
Publisher:	IOP Publishing Ltd
Additional Information:	The copyright for this article belongs to the Electrochemical Society.
Keywords:	Cathodes; Cobalt compounds; Electrolytic reduction; High resolution transmission electron microscopy; Oxygen; Oxygen evolution reaction; Oxygen reduction reaction; Phosphorus compounds; Scanning electron microscopy; Sodium compounds, Charge properties; Electrocatalytic oxygen reduction; Fluorophosphate; Metal phosphates; Onset potential; Orthorhombic structures; Oxygen evolution reaction (oer); Solution combustion method, Fluorine compounds
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	14 Aug 2022 05:50
Last Modified:	14 Aug 2022 05:50
URI:	https://eprints.iisc.ac.in/id/eprint/75722

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