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A comparison of cathodes for zero gap alkaline water electrolysers for hydrogen production

A comparison of cathodes for zero gap alkaline water electrolysers for hydrogen production
A comparison of cathodes for zero gap alkaline water electrolysers for hydrogen production
Selected coatings on nickel or stainless steel micromeshes have been examined as electrocatalysts for hydrogen evolution in conditions mimicking those found in zero gap alkaline water electrolysers. Voltammetry in 4 M NaOH at a temperature of 333 K, shows that Pt, NiMo and RuO2 are the coatings of choice giving a superior performance particularly at higher current densities. NiMo and RuO2 coatings also give stable performance during a 10 day electrolysis in a laboratory, zero gap, alkaline water electrolysis cell with a hydroxide conducting membrane; when combined with a NiFe(OH)2 coated anode, a current density of 1 A cm?2 is achieved with a cell voltage of ?2.1 V. Pt catalyses H2 evolution efficiently at short times of electrolysis but cells with a Pt cathode show an increase in cell voltage from 2.05 V to 2.23 V during the first two days of operation.
cathode electrocatalysts alkaline water electrolysers, zero gap membrane cells, hydrogen production
0360-3199
7429-7435
Pletcher, Derek
f22ebe69-b859-4a89-80b0-9e190e6f8f30
Li, Xiaohong
ea8135d4-1bd7-4771-85cd-eb8f2a264654
Wang, Shaopeng
eb2e2dd5-0d2c-47af-89a9-09b82f4b4ccb
Pletcher, Derek
f22ebe69-b859-4a89-80b0-9e190e6f8f30
Li, Xiaohong
ea8135d4-1bd7-4771-85cd-eb8f2a264654
Wang, Shaopeng
eb2e2dd5-0d2c-47af-89a9-09b82f4b4ccb

Pletcher, Derek, Li, Xiaohong and Wang, Shaopeng (2012) A comparison of cathodes for zero gap alkaline water electrolysers for hydrogen production. [in special issue: 7th Petite Workshop on the Defect Chemical Nature of Energy Materials, 14-17 March 2011, Storaas, Kongsberg, Norway] International Journal of Hydrogen Energy, 37 (9), 7429-7435. (doi:10.1016/j.ijhydene.2012.02.013).

Record type: Article

Abstract

Selected coatings on nickel or stainless steel micromeshes have been examined as electrocatalysts for hydrogen evolution in conditions mimicking those found in zero gap alkaline water electrolysers. Voltammetry in 4 M NaOH at a temperature of 333 K, shows that Pt, NiMo and RuO2 are the coatings of choice giving a superior performance particularly at higher current densities. NiMo and RuO2 coatings also give stable performance during a 10 day electrolysis in a laboratory, zero gap, alkaline water electrolysis cell with a hydroxide conducting membrane; when combined with a NiFe(OH)2 coated anode, a current density of 1 A cm?2 is achieved with a cell voltage of ?2.1 V. Pt catalyses H2 evolution efficiently at short times of electrolysis but cells with a Pt cathode show an increase in cell voltage from 2.05 V to 2.23 V during the first two days of operation.

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e-pub ahead of print date: 8 March 2012
Published date: 1 May 2012
Keywords: cathode electrocatalysts alkaline water electrolysers, zero gap membrane cells, hydrogen production
Organisations: Engineering Science Unit

Identifiers

Local EPrints ID: 339236
URI: http://eprints.soton.ac.uk/id/eprint/339236
ISSN: 0360-3199
PURE UUID: e8822a7f-daaf-4670-b1ea-e32bfd6b41aa

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Date deposited: 28 May 2012 10:49
Last modified: 14 Mar 2024 11:12

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Contributors

Author: Derek Pletcher
Author: Xiaohong Li
Author: Shaopeng Wang

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