What Are the Advantages of iridium oxide coated titanium anodes？

Applications of Iridium Oxide Coated Titanium Anodes

Iridium oxide-coated titanium anodes are celebrated for their versatility and efficiency across various industrial applications. These anodes are integral in processes requiring high conductivity and exceptional corrosion resistance, making them indispensable in industries such as electroplating, metal production, cathodic protection, and water treatment. Below, we delve into the significant roles they play in these key sectors, highlighting their impact on operational efficiency, product quality, and environmental sustainability.

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Electroplating

Iridium oxide-coated titanium anodes are pivotal in the electroplating industry, where their high conductivity and corrosion resistance are highly valued. These anodes ensure prolonged operational life while efficiently attracting metal ions, which is essential for creating durable and robust metal coatings on various surfaces.

This capability not only improves the quality and durability of plating but also enhances the overall efficiency of the electroplating process. As a result, they provide a reliable and cost-effective solution for a wide range of electroplating applications, leading to reduced costs and consistent, high-quality outcomes.

Producing Aluminum Foil

The production of aluminum foil greatly benefits from the use of iridium oxide-coated titanium anodes. These anodes are essential for conducting electrical currents during the electrolysis process, which is a critical step in aluminum production. Their superior electrical conductivity and corrosion resistance significantly enhance the efficiency of this process.

As a result, there is a stable and quality deposition of aluminum, leading to the production of consistent and reliable aluminum foil. This efficiency and reliability make iridium oxide-coated titanium anodes indispensable in the aluminum foil manufacturing industry.

Electrolytic Copper Foil Production

In the electrolytic production of copper foil, iridium oxide-coated titanium anodes are highly valued for their ability to attract metal ions from the electrolyte and facilitate their deposition onto the substrate, resulting in high-quality copper foil. Their exceptional electrical conductivity ensures efficient current transfer, optimizing the electrolysis process.

Moreover, these anodes are engineered to withstand corrosive production environments, ensuring consistent performance and minimizing the need for maintenance and replacement. This makes them essential for producing efficient, durable, cost-effective copper foil.

Galvanized Steel Sheet

The galvanized steel sheet manufacturing process benefits immensely from the use of iridium oxide-coated titanium anodes. Their high electrical conductivity and corrosion resistance make them ideal for electroplating, ensuring a consistent supply of electrical current for zinc coating on steel surfaces.

The combination of titanium and iridium oxide in these anodes leads to uniform plating thickness and enhanced production efficiency. Additionally, iridium oxide&#;s corrosion resistance extends the anodes&#; lifespan, leading to reduced maintenance costs and increased productivity.

Water Treatment

In water treatment, iridium oxide-coated titanium anodes are crucial for efficient and eco-friendly electrochemical disinfection and electrocoagulation. They operate effectively in harsh chemical environments, thanks to their corrosion resistance, and their high electrocatalytic activity enhances the removal of impurities from water.

These anodes enable a chemical-free approach to water purification, making them key components in the process of ensuring clean and safe water. Their extended lifespan and operational efficiency also contribute to the cost-effectiveness and environmental sustainability of water and wastewater treatment processes.

Cathodic Protection

Iridium oxide-coated titanium anodes are also integral in cathodic protection systems, where they play a crucial role in preventing corrosion of metal structures such as pipelines, tanks, and marine vessels. These anodes, due to their high corrosion resistance and electrical conductivity, are effective in creating a protective electrochemical environment around the metal structure.

By applying a controlled current to the metal, these anodes transform potential corrosion sites into cathodic areas, thus preventing the metal&#;s degradation. The durability and efficiency of iridium oxide-coated titanium anodes make them a preferred choice for long-term cathodic protection solutions, significantly extending the lifespan of critical infrastructure in various industries.

Advantages and problems of ruthenium iridium titanium anode

Titanium anode has excellent electrical conductivity and corrosion resistance, and its service life is much longer than that of lead anode. It can work stably for more than hours and has low cost. It will be an inevitable trend in the development of electro-galvanized and tin production at home and abroad. Titanium electrodes are currently used in Japan, the United States, Germany, and China, which not only greatly saves electroplating energy consumption, but also creates conditions for the production of thick galvanized and tin steel plates because it can increase the electroplating current density.

Contact us to discuss your requirements of iridium oxide coated titanium anodes. Our experienced sales team can help you identify the options that best suit your needs.

Titanium anode classification:

1. It is distinguished according to the gas evolved in the anode during the electrochemical reaction. The chlorine evolution anode is called the chlorine evolution anode, such as ruthenium-coated titanium electrode: the oxygen evolution anode is called the oxygen evolution anode, such as iridium-coated titanium electrode and platinum titanium mesh. /board. Chlorine evolution anode (ruthenium-coated titanium electrode): The electrolyte contains a high content of chloride ions, generally in the environment of hydrochloric acid, electrolysis of sea water and salt water. Corresponding products of our company are ruthenium iridium titanium anode, ruthenium iridium tin titanium anode.

2. Oxygen evolution anode (iridium-coated titanium electrode): The electrolyte is generally a sulfuric acid environment. The corresponding products of our company are iridium tantalum anode, iridium tantalum tin titanium anode, and high iridium titanium anode.

3. Platinum-coated anode: Titanium is the base material. The surface is coated with platinum, the thickness of the coating is generally 0.5-5μm, and the size of the platinum and titanium mesh is generally 12.5×4.5mm or 6×3.5mm.

Ruthenium, iridium, titanium anode has a certain working life during the electrolysis process. When the voltage rises very high and there is actually no current through, the ruthenium-iridium-titanium anode loses its function. This phenomenon is called anode passivation.
There are several reasons for the passivation of ruthenium iridium titanium anode:

A. The coating peels off

The titanium ruthenium iridium titanium anode is composed of a titanium substrate and a ruthenium iridium titanium active coating. The electrochemical reaction is only the ruthenium iridium titanium active coating. If the coating and the substrate are not firmly bonded, they will fall off the titanium plate substrate and fall off. To a certain extent, the titanium ruthenium iridium titanium anode is useless. (Divided into crushed peeling, belly-shaped layer peeling and cracked peeling)

B. RuO2 dissolved

Reduce the generation of oxygen, which can slow down the formation of oxide film. When the total current density of electrolysis increases, the increase in the rate of chlorine generation is much greater than the increase in the rate of oxygen generation, so the increase in current density is conducive to the decrease of the oxygen content in chlorine. The titanium substrate is pre-oxidized to form a layer of oxide film, which can increase the binding force of the active coating of ruthenium, iridium, titanium and the titanium substrate, make the coating firm, prevent ruthenium from falling off and dissolving, but also cause ruthenium, iridium, titanium Increase in anode ohmic drop.

c. Oxide saturation

The active coating is composed of non-stoichiometric RuO2- and TiO2, which is an oxygen-deficient oxide. The non-stoichiometric oxide is the real active center of chlorine discharge. The more such oxides, the more active centers, and the better the activity of the ruthenium, iridium, titanium anode. The conductivity of ruthenium-iridium-titanium-coated anodes is the performance of distorted n-type mixed crystals generated from isomorphic RuO2 and TiO2 after heat treatment. There are some oxygen vacancies. When these oxygen vacancies are filled with oxygen, the The potential rises rapidly, causing passivation.

D. There are cracks in the coating

During electrolysis, new ecological oxygen is generated on the ruthenium-iridium-titanium anode, part of which discharges at the interface between the active coating and the electrolyte, and then leaves the anode surface to generate oxygen into the solution; due to cracks in the active coating, the other part of the oxygen is adsorbed on the anode On the surface, through the active coating through diffusion or migration, it reaches the interface between the coating and the titanium substrate, and then oxygen is chemically adsorbed on the surface of the titanium substrate, forming a non-conductive oxide film (TiO2) with the titanium, resulting in reverse resistance Or the electrolyte penetrates through the cracks of the coating, the titanium substrate is slowly oxidized, and the interface with the active coating of ruthenium, iridium, titanium is corroded and the active coating of ruthenium, iridium, titanium falls off, resulting in an increase in the potential of the ruthenium iridium titanium anode. The increase in potential further promotes the dissolution of the coating and the oxidation of the titanium substrate.

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