Characteristics and Requirements of Active Coating in Circulation Water Electrolyzer
In Circulation Water Electrolyzer, graphite anode materials are mostly used in the industrial production of electrodeposited metal cobalt. However, the graphite anode has high electrical resistance, low strength, easy loss, short working life, and also pollutes the cathode product, so it is difficult to obtain high-purity metal cobalt products. Some Chinese companies have used an active-coated titanium anode for electrodeposited metal in a chloride solution, which overcomes the problems of graphite anodes and is used in many smelters.
Characteristics and requirements of Circulation Water Electrolyzer active coating
When the electrolytes in different Circulation Water Electrolyzers are different, and the anodes work in different environments, titanium anodes with active coatings with various properties are required. The Water Electrolyzer active coating is characterized by low chlorine overpotential, good electrical conductivity, strong chlorine corrosion resistance, and long service life of the anode material.
After a large number of coating formula screening tests, after adding and reducing a variety of active elements, the mixed oxide formula coating of active elements tin and iridium was added, and good results were obtained in the test results, which reduced the Circulation Water Electrolyzer voltage, It improves current efficiency, consumes less power than traditional graphite anodes, is more energy efficient, and solves the problem of high carbon content in cobalt.