Electrodeposition of NiMo alloy coatings and their characterization as cathodes for hydrogen evolution in sodium hydroxide solution
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The hydrogen evolution reaction on electrodeposited NiMo alloy coatings, as well as their electrochemical properties in NaOH solutions have been investigated by polarization measurements, cyclic voltammetry and EIS technique. It is shown that NiMo alloy coatings electrodeposited from pyrophosphate-sodium bicarbonate bath possess high catalytic activity for hydrogen evolution in NaOH solutions. Their stability in 1M NaOH at 25 0C under the condition of reverse polarization is shown to be very good, while in 33% NaOH at 850C (conditions of industrial electrolysis) electrodeposited NiMo alloy coatings exhibit also high catalytic activity, but low stability, as a consequence of massive dissolution of alloy coatings under the condition of reverse polarization.
Keywords:NiMo alloy coatings / NaOH solutions / hydrogen / rastvor NaOH / vodonik / premazi NiMo legura
Source:Programme and The Book of Abstracts / Ninth Annual Conference YUCOMAT 2007, Herceg Novi, September 10-14, 2007, 2007, 163-163
- Belgrade : Institute of Technical Sciences of SASA