A novel bifunctional oxygen GDE for alkaline secondary batteries


Li, Xiaohong, Pletcher, Derek, Russell, Andrea E., Walsh, Frank C., Wills, Richard G.A., Gorman, Scott, Price, Stephen W.T. and Thompson, Stephen J. (2013) A novel bifunctional oxygen GDE for alkaline secondary batteries Electrochemistry Communications, 34, pp. 228-230. (doi:10.1016/j.elecom.2013.06.020).

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Description/Abstract

This paper describes a novel procedure for the fabrication of a gas diffusion electrode (GDE) suitable for use as a bifunctional oxygen electrode in alkaline secondary batteries. The electrode is fabricated by pre-forming a PTFE-bonded nickel powder layer on a nickel foam substrate followed by deposition of NiCo2O4 spinel electrocatalyst by dip coating in a nitrate solution and thermal decomposition. The carbon-free composition avoids concerns over carbon corrosion at the potentials for oxygen evolution. The electrode shows acceptable overpotentials for both oxygen evolution and oxygen reduction at current densities up to 100 mA cm? 2. Stable performance during > 100 successive, 1 h oxygen reduction/evolution cycles at a current density of 20 mA cm? 2 in 8 M NaOH at 333 K was achieved

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/j.elecom.2013.06.020
ISSNs: 1388-2481 (print)
Subjects: T Technology > T Technology (General)
Organisations: Chemistry, Engineering Science Unit, Electrochemistry
ePrint ID: 364115
Date :
Date Event
September 2013Published
Date Deposited: 04 Apr 2014 14:18
Last Modified: 17 Apr 2017 13:57
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/364115

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