Abstract
An electrolyzer was constructed using a composite made of atomized nickel and multiwalled carbon nanotubes (Ni-MWCNT) as cathode (area= 0.0946 cm2) and graphite or platinum rod as anode. The electrolysis of water was carried out using several different electrolytes such as sodium sulfate, sodium hydroxide and sulfuricacid. Hydrogen gas that is produced at different current densities hasbeen measured for determining the rates of production of hydrogen and power efficiencies. Since composites are made of MWCNT, its performance has been compared with the composites for hydrogen generation. Cyclic voltammetry curves were recorded using the atomized Ni-MWCNT in different electrolytes forexamining the electro catalysis. Thermogravimetric analysis of atomized Ni-MWCNT shows that the nickel atom is protected from oxidation, suggesting a strong interaction with MWCNT. This is probably the first case of a spin polarized cathode to be used for hydrogen production.
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