Ti-al Layered Composite Electrode Materials Preparation Technology And Performance

The electrode is the most important equipment component in the area of hydrometallurgy and the electrochemistry industry (chlorine alkali industry, sea water electrolysis sewage treatment, galvanization, organic electro-synthesis and so on), electrode material choice directly relative to the reaction stability of electrolysis and electrochemical, the production rate and the quality, the run cost, the electrical energy consumption, the peripheral environment pollution, and so on. Therefore, the electrode material is a hot spot of this research domain.At present, in the non-ferrous metal extraction industry, the insoluble electrode mainly used the lead base alloy electrode and the coating titanium electrode (titanium anode). Compared to lead base alloy electrode, titanium anode has the higher size stably, lower chlorine and oxygen evolution potential, good corrosion resistance, light quality and higher strength.Since been published by 1965, the titanium anode applies in chlorine alkali industry successfully rapidly and be honored as a significant technological revolution of the chlorine alkali industry. However, Existing research was only restricted in the coating formula, the preparation technology, the coating structural design, the coating electrode application aspect to the titanium anode's research and obtain fruitful research result. But, the titanium anode matrix material electronic resistivity is big, cause electrode to high and surface potential distribution becomes non-uniform further enhances the main bottleneck of titanium anode overall performance.From the internal composition structure of the electrode matrix material, in order to change the tactic pattern of tradition electrode matrix material, the design proposal was proposed that the aluminum for in core, the outer layer by the titanium gable layered composite construction matrix material, which in the electrode the core as aluminum for fine electrical conductivity, to play an important part of reducing the interface resistance and the equalization current distribution, and the outer layer using the titanium gable, to still maintain the original electrochemistry nature. On the base of th related literature, Ti-Al layered composite electrode material was prepared by the means of Plating, Vacuum Upward, Hot-pressure welding and so on. And the interface and related properties of Ti-Al layered composite electrode material were studied by the means of SEM, EDS, electrochemistry workstation and so on.The results indicated that the Ti-Al layered compound material was prepared by the above three methods, and the metallurgy union was formed in the surface of Ti and Al; meanwhile, the resistance of it reduced by 50%-90% obviously and the electrochemistry performance distinct enhancement. under the identical electrode potential, the polarization current was bigger than the pure Ti base anode, and the preparation technological conditions to the electrochemistry performance's influence with to the electronic resistivity the influence are consistent, which the electric conductivity of metal matrix influenced the electrochemistry catalysis performance of electrode material, therefore, the change of the electrode matrix material not only improved electrode's performance, but also attained the purpose of saving energy and reducing consumption.