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Titanium exhibits outstanding corrosion resistance in oxidative media and chloride ion environments, and can withstand the long-term erosion of acidic electrolytes such as copper sulfate, nickel sulfate, and zinc chloride. A dense oxide film (TiO₂) forms easily on its surface, which is highly stable and has a long service life (typically over 5 to 10 years).
Titanium itself has a relatively high resistivity, but its conductivity can be significantly enhanced and the cell voltage reduced by applying special surface treatments, such as coating with noble metal oxide layers, thereby saving electrical energy. Common coating materials include ruthenium-iridium (Ru-Ir) and platinum (Pt), which possess both catalytic activity and stability.
Titanium has a density of only 57% that of steel, yet its strength is close to that of common steel. It is easy to install and transport, and can withstand mechanical stress during the electrolysis process. It has good rigidity and is not prone to deformation under long-term current, ensuring the stability of the plate spacing.
The surface can undergo treatments such as sandblasting and activation to enhance the adhesion of the coating, or be designed with specific patterns to facilitate gas release (such as hydrogen evolution during electrolysis). The coating can reduce the overpotential for metal deposition and increase current efficiency.
Long service life reduces replacement frequency and lowers maintenance costs. Titanium material is recyclable and requires less coating metal, meeting the requirements of green production.
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🔩 Hydrometallurgy (Electrolytic Extraction / Refining) +Copper electrolysis: Used as the hanging ear of stainless steel cathode plates or as a substitute for some cathode components to produce high-purity cathode copper (above 99.99%).
Zinc electrolysis: Serves as the cathode plate in zinc sulfate electrolyte to deposit zinc metal, resistant to acid corrosion and easy to strip the zinc layer.
Nickel, cobalt, manganese electrolysis: Applied in sulfate or chloride systems, capable of withstanding high-temperature and strong acid environments. -
✨ Electroplating Industry +As insoluble cathodes or anodes, coating titanium cathodes are used in precious metal plating (such as gold plating and platinum plating), ensuring uniform current distribution.
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⚗️ Chlor-alkali Industry +In the ion-exchange membrane electrolytic cell, the titanium cathode plate serves as a component of the cathode chamber and is subject to the corrosion of high-temperature and high-concentration alkaline solution.
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🌿 Environmental Protection Field (Electrochemical Water Treatment) +It is used in electrocoagulation, electro-Fenton and other processes to treat heavy metal-containing wastewater. The titanium substrate is corrosion-resistant and the coating has high catalytic activity.
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⚡ Preparation of New Energy Materials +It is used as a cathode carrier in the electrolysis of lithium battery material precursors (such as electrolytic manganese dioxide) and in the field of hydrogen energy (electrolysis of water for hydrogen production).
Titanium cathode plates, with their advantages of corrosion resistance, lightweight, long service life and modifiable coating, have become the core components of high-end electrolytic processes. With the improvement of efficiency and quality in hydrometallurgy and the rapid development of the new energy industry, their application scenarios will further expand. Technological innovation is focused on high-performance coatings, structural lightweighting and cost optimization to meet the demands of green manufacturing and energy conservation.
Baoji Special Steel Titanium Industry Co., Ltd. has been dedicated to researching and manufacturing composite electrode plate series products for nearly two decades. During this period, they have continuously improved the production equipment and gradually achieved production automation. Titanium cathodes and stainless steel cathode products have reached hundreds of thousands of pieces, which have been exported to countries such as South Africa, Chile, Zambia and Canada, and have established good long-term cooperative relationships with international renowned customers.
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Q What is a titanium cathode plate and how does it work in electrolysis? +A titanium cathode plate is an electrode component made from high-purity titanium substrate, typically coated with noble metal oxides such as ruthenium-iridium (Ru-Ir) or platinum (Pt). During electrolysis, metal ions in the electrolyte solution are reduced and deposited onto the cathode surface. The titanium base provides structural integrity and corrosion resistance, while the coating enhances electrical conductivity and catalytic efficiency.
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Q How long is the service life of a titanium cathode plate? +Under normal operating conditions, titanium cathode plates typically have a service life of 5 to 10 years or more. The dense TiO₂ oxide film that naturally forms on the titanium surface provides excellent protection against acidic and chloride-rich electrolyte environments, significantly extending the working lifespan compared to conventional electrode materials.
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Q What industries commonly use titanium cathode plates? +Titanium cathode plates are widely used across several industries, including hydrometallurgy (copper, zinc, nickel, cobalt refining), the electroplating industry (gold, platinum plating), the chlor-alkali industry, electrochemical water treatment (heavy metal wastewater), and new energy material preparation (lithium battery precursors, hydrogen production via water electrolysis).
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Q What coating materials are used on titanium cathode plates and why? +The most common coating materials are ruthenium-iridium (Ru-Ir) oxide and platinum (Pt). These noble metal coatings are selected for their dual properties of catalytic activity and electrochemical stability. They significantly reduce the overpotential for metal deposition, lower cell voltage, increase current efficiency, and extend the overall electrode lifespan in harsh electrolytic environments.
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Q Why is titanium preferred over other metals for cathode plates? +Titanium offers a unique combination of properties that make it ideal for cathode plates: it is only 57% the density of steel yet matches its strength, making installation and handling easy. It naturally forms a stable, self-healing TiO₂ protective layer, resisting corrosion in acidic, alkaline, and chloride-rich environments. Additionally, it is recyclable, supports various surface treatments, and offers a far longer service life than alternatives such as lead or stainless steel.
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Q Can titanium cathode plates be customized for specific applications? +Yes. Titanium cathode plates can be customized in terms of dimensions, surface treatment (sandblasting, activation), coating type (Ru-Ir, Pt, or other noble metal oxides), and surface pattern design to facilitate gas release during specific electrolytic processes. Manufacturers like Baoji Special Steel Titanium Industry Co., Ltd. provide tailored solutions for copper, zinc, nickel, cobalt, and other metal electrolysis applications, as well as new energy and environmental sectors.