Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 573, Issue -, Pages 128-132Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.04.023
Keywords
Hydrogen production; Alkaline electrolyser; Electrodes; Nickel foam; Electrochemical measurements
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In investigation of different materials for electrodes used in electrolysers for hydrogen production, nickel foam shows wide interests in hydrogen scientific community. This paper brings novel results of performed experiments on pure nickel foam and nickel foam silver coated. The electrochemical behavior of chosen material in high concentrated alkaline media was studied using potentiostatic and potentiodynamic DC and AC electrochemical methods: linear polarization, electrochemical impedance spectroscopy. It was shown that using silver coatings enable higher hydrogen generation. There is defined linear region of the hydrogen production with evidence that an increasing of the electrodes overvoltage decreases the resistance to the charge transfer. (C) 2013 Elsevier B. V. All rights reserved.
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