Evaluation of Raney nickel electrodes prepared by atmospheric plasma spraying for alkaline water electrolysers
Chade, Daniel and Berlouis, Leonard and Infield, David and Cruden, Andrew and Nielsen, Peter and Mathiesen, Troels (2013) Evaluation of Raney nickel electrodes prepared by atmospheric plasma spraying for alkaline water electrolysers. International Journal of Hydrogen Energy, 38 (34). pp. 14380-14390. ISSN 0360-3199 (https://doi.org/10.1016/j.ijhydene.2013.09.012)
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The work describes the evaluation of Raney nickel electrodes prepared by the technique of atmospheric plasma spraying (APS). The APS Raney nickel layers of 30 mm, 100 mm and 300 mm thicknesses were characterised prior to and post-chemical activation by SEM. Following further electrochemical activation, the performance of these layers towards hydrogen evolution reaction (HER) were evaluated using potentiodynamic Tafel analysis and electrochemical impedance spectroscopy (EIS) in 30% KOH solutions over the temperature range 30 Ce80 C. Large surface area increases, in relation to smooth nickel, were obtained for these layers following activation and these were also confirmed from cyclic voltammetry measurements. The analysis of the data indicated that of the 3 thicknesses examined, the best electrocatalytic activity towards HER was obtained for 100 mm sample, with an efficiency (based on the Higher Heating Value for H2) equal to 96% at a current density of 300 mA cm2 and temperature of 70 C.
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Item type: Article ID code: 45084 Dates: DateEvent2013Published2 October 2013Published OnlineSubjects: Technology > Electrical engineering. Electronics Nuclear engineering Department: Faculty of Engineering > Electronic and Electrical Engineering
Faculty of Science > Pure and Applied ChemistryDepositing user: Pure Administrator Date deposited: 09 Oct 2013 09:10 Last modified: 04 Aug 2024 01:21 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/45084