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What are the advantages of titanium anodes compared to graphite anodes and lead alloy anodes?
Aug 02, 2017

        Equipped with professional factory, Taijin Industrial is the biggest China manufacturer, supplier and producer of ICCP titanium anode. Our company can offer you corrpro vendor cathodic protectiontitanium electrodeMMO anode at competitive price.

         Compared with graphite anode and lead alloy anode, ICCP titanium anode has no disadvantage of mechanical size attenuation, so it is also called dimensional stability anode. Titanium anode has the following advantages: stable geometrical dimension geometry; diversity; electrochemical stability and excellent chemical properties; electrocatalytic activity of the anode potential excellent low, not sensitive to changes in circuit density; energy saving and prolonging the service life of electrolyte; maintenance; long life (very important); high quality cathode product (no impurities or little impurities, homogeneous microstructure, such as copper, zinc, nickel). Titanium anode is a double layer composite structure composed of coating on metal substrate and substrate. The titanium matrix acts as a conductor, and the coating acts as an electrochemical catalyst for oxygen evolution / dechlorination reactions. The oxygen evolution / chlorine evolution potential of this coating is low, and the oxygen evolution / chlorine evolution potential hardly varies with the current density. Ti based conductor is a permanent material with long service life. It can get almost pure cathode products with no pollution and energy saving.

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         The anode is divided into soluble anode and insoluble anode in metallurgical industry.

The soluble anode plays an important role in the addition of metal ions and conduction during the electrolysis process. The insoluble anode only acts as a conductive agent. The earliest insoluble anodes were graphite and lead based anodes. In the 70s, titanium anodes began to be used in electrolytic and electroplating industries as new technologies. At present, insoluble anodes can be divided into two categories: chlorine evolution anode and oxygen evolution anode. Chlorine evolution anode for chloride electrolyte system, anode in electroplating process released chlorine, so called chlorine evolution anode; anode is mainly used for sulfate, nitrate, hydrocyanic acid salt electrolyte, anode in electroplating process to release oxygen, so called oxygen evolution anode. Lead anode oxygen evolution anode, titanium anode according to the surface of its catalytic coating, respectively, oxygen, chlorine, or two functions of both.

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       lead alloy anodes

       Lead alloy anode belongs to oxygen evolution anode, and the electrolyte of oxygen evolution reaction is sulfuric acid and sulfate. It is mainly used in electrolytic metallurgy. The anode has a defect in which the geometrical size of the electrolytic process varies. In the electrolysis process, the lead anode matrix is first converted into lead sulfate, and then converted into lead oxide. Lead sulfate is an intermediate layer. It is an insulator and acts as a chemical barrier to protect the lead matrix inside the sulfuric acid environment. Is the actual meaning of the lead oxide electrode in the outer layer, occurring above the oxygen evolution reaction, the oxygen evolution potential of lead oxide is very high, and with the increase of the current density increased rapidly, the characteristics of lead alloy anode is the inherent characteristics of it by lead oxide outer material lead oxide is decided by the poor conductors of electricity. In addition, in the process of electrolysis, the electrochemical properties of lead oxide anode structure to decay, the internal stress of lead oxide layers off, in addition, generation of lead peroxide also lead oxide dissolved, as lead sulfate intermediate layer was again converted to lead oxide, become the outer electrocatalytic activity of new lead oxide material. The inner layer of the matrix was oxidized, forming lead sulfate intermediate protective layer of new. Therefore, in the process of electrolysis, lead and lead alloy elements have been dissolved into the electrolyte solution and precipitation caused by pollution (chemical precipitation solution) and cathode product pollution (pollutants deposition, the surface of the cathode electrolysis to the purity of copper can not be guaranteed).

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