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A novel bifunctional oxygen GDE for alkaline secondary batteries

A novel bifunctional oxygen GDE for alkaline secondary batteries
A novel bifunctional oxygen GDE for alkaline secondary batteries
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
1388-2481
228-230
Li, Xiaohong
ea8135d4-1bd7-4771-85cd-eb8f2a264654
Pletcher, Derek
f22ebe69-b859-4a89-80b0-9e190e6f8f30
Russell, Andrea E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Wills, Richard G.A.
60b7c98f-eced-4b11-aad9-fd2484e26c2c
Gorman, Scott
165a7220-6829-4b26-ae4d-f8e80e6a0853
Price, Stephen W.T.
5d3310d0-cf30-45e6-ba44-4bf87ade3b8d
Thompson, Stephen J.
46677911-01d9-478e-ad98-87ac37cd56a6
Li, Xiaohong
ea8135d4-1bd7-4771-85cd-eb8f2a264654
Pletcher, Derek
f22ebe69-b859-4a89-80b0-9e190e6f8f30
Russell, Andrea E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Wills, Richard G.A.
60b7c98f-eced-4b11-aad9-fd2484e26c2c
Gorman, Scott
165a7220-6829-4b26-ae4d-f8e80e6a0853
Price, Stephen W.T.
5d3310d0-cf30-45e6-ba44-4bf87ade3b8d
Thompson, Stephen J.
46677911-01d9-478e-ad98-87ac37cd56a6

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, 228-230. (doi:10.1016/j.elecom.2013.06.020).

Record type: Article

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

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Published date: September 2013
Organisations: Chemistry, Engineering Science Unit, Electrochemistry

Identifiers

Local EPrints ID: 364115
URI: https://eprints.soton.ac.uk/id/eprint/364115
ISSN: 1388-2481
PURE UUID: 6a1faf2f-dedc-4fb1-88b9-2c1a162aef4f
ORCID for Andrea E. Russell: ORCID iD orcid.org/0000-0002-8382-6443

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Date deposited: 04 Apr 2014 14:18
Last modified: 06 Jun 2018 12:58

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Contributors

Author: Xiaohong Li
Author: Derek Pletcher
Author: Frank C. Walsh
Author: Scott Gorman
Author: Stephen W.T. Price
Author: Stephen J. Thompson

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