Study And Preparation On Nickel Basic Cathodes In Chlor-alkali Industry

With the rapid development of chlorine alkali industry, it becomes an important research subject how to reduce energy consumption, raise economic benefits and improve the technology level. At present, the low carbon steel and the ordinary plating nickel as the cathode material were adopted in the chlorine alkali industry, but the electric energy efficiency is low and the overpotential of hydrogen evolution is high, the overpotential of hydrogen evolution became the crucial factor of energy consuming in electrolytic equipment. In resent years, the research of active cathodes has been paid attention to by people.The ordinary iron or the low carbon steel was adopts as the cathode material in the cholrine alkali industry traditionally, they have high overpotential of hydrogen evolution reaction and bad stability, though Raney Ni is adopted as the cathode, its stability is also bad, and that its function of resisting countercurrent is very bad, furthermore, this kind of cathode material need importing and the cost is costly; the electric catalyze activity of Ni-P deposit coating is not satisfying; the electric chemic activity of Ni-S deposit coating is better, but the activity and stability can be improved more, most of all, for industrial application of the electrochemistry technique there are still some problems, the activity can be improved by doping the third element to the plating solution of preparing binary alloy, but the technological process is very complex, so this project can adapt for the applying in the industry. So developing cathode for hydrogen evolution which has better activity, better stability, simple preparing process and low lost becomes the goal of researchers.Because Ni-S electrode has better catalyzed activity, simple preparing process and...