Electrocatalytic Oxygen Reduction Reaction Activity of Sodium Metal Phosphate Based Insertion Cathodes. (19th June 2018)

• Record Type: Journal Article
• Authors: Sharma, Lalit; Baskar, Senthilkumar; Barpanda, Prabeer
• Is Part Of: ECS transactions. Volume 85:Number 13(2018)
• Page Start: 1221
• Page End: 1227
• Publication Date: 2018-06-19
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/08513.1221ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Electrocatalytic oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) properties of Co-based sodium fluorophosphate was studied. Na2 CoPO4 F, 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 Na2 CoPO4 F as air-cathode and excellent (dis)charge properties were observed.