Lead Dioxide Titanium Electrode
Under the environment of oxygen evolution, people have developed the lead dioxide electrode (PbO2): a non-stoichiometric compound that is deficient in oxygen and contains excessive lead. It has multiple crystal forms, using the anode electrodeposition to produce the β-PbO2, which has Oxidation, corrosion resistance (high stability in strong acid H2S04 or HN03), high oxygen overpotential, good electrical conductivity, strong binding force, strong oxidation ability when electrolyzed in aqueous solution, can bear large current, etc.
Product Introduction
Key Features
High Oxygen Evolution Potential
The PbO₂ coating offers a high oxygen evolution potential of approximately 1.68 V, making it highly effective for oxidation reactions while minimizing unwanted side reactions.
Excellent Corrosion Resistance
Designed for operation in strongly acidic electrolytes, Ti/PbO₂ anodes provide excellent resistance to corrosion in:
Sulfuric acid (H₂SO₄)
Nitric acid (HNO₃)
Chromic acid
Perchlorate solutions
Other aggressive oxidizing media
High Current Density Capability
The anode is capable of operating under current densities of up to 5,000 A/m², ensuring stable performance in demanding industrial processes.
Long Service Life
The dense PbO₂ coating provides excellent wear resistance and chemical stability, with a typical service life of 3–5 years, depending on operating conditions.
High Electrochemical Efficiency
The low electrical resistance of the PbO₂ coating contributes to:
Improved current efficiency
Lower energy consumption
Stable electrode performance
High oxidation efficiency
Technical Specifications
| Item | Specification |
|---|---|
| Substrate Material | Titanium |
| Coating Material | Lead Dioxide (PbO₂) |
| Coating Thickness | 3–5 mm |
| Standard Plate Size | 5 × 1280 × 1380 mm |
| Coated Mesh Area | 5 × 800 × 1280 mm |
| Customized Sizes | Available according to customer drawings |
| Maximum Current Density | 5,000 A/m² |
| Oxygen Evolution Potential | Approximately 1.68 V |
| Expected Service Life | 3–5 years |
Electrochemical Characteristics
Lead dioxide coatings are formed through electrodeposition on the titanium substrate.
During deposition:
Water molecules generate adsorbed hydroxyl radicals (OH)
Lead ions react to form intermediate hydroxide compounds
The intermediates are further oxidized into a dense PbO₂ catalytic layer
The resulting coating provides:
High oxidation capacity
Excellent dimensional stability
Strong adhesion to the titanium substrate
Outstanding electrochemical durability
Applications
Hard Chromium Plating
Widely used as insoluble anodes for:
Hard chrome plating
Chromic acid plating
Decorative chromium plating
Tin-free steel production
Chromate Surface Treatment
Suitable for:
Steel plate passivation
Chromate conversion coating
Surface treatment of metal components
Wastewater Treatment
Ti/PbO₂ anodes are highly effective in electrochemical oxidation processes for:
Industrial wastewater treatment
COD reduction
BOD reduction
Organic pollutant degradation
Electrochemical advanced oxidation processes (EAOPs)
Ozone Generation
The high oxygen evolution potential of PbO₂ makes these anodes suitable for:
Electrolytic ozone production
Water disinfection
Advanced oxidation systems
Hydrometallurgy
Used in the recovery and extraction of valuable metals, including:
Copper
Nickel
Cobalt
Other non-ferrous and precious metals
Electrolytic Production of Inorganic Chemicals
Applicable to the production of:
Chromic acid
Perchlorates
Periodates
Other oxidizing inorganic compounds
Organic Electrochemical Synthesis
Suitable for oxidation reactions used in:
Organic synthesis
Pickling electrolysis
Specialty chemical production
Advantages
High oxygen evolution potential for efficient oxidation
Excellent corrosion resistance in strong acidic media
High current density capability up to 5,000 A/m²
Long service life with stable electrochemical performance
Low electrical resistance for improved energy efficiency
Easy installation and replacement
Excellent dimensional stability during operation
Custom Manufacturing
Changsheng Titanium provides customized Ti/PbO₂ anodes to meet specific process requirements, including:
Plate anodes
Mesh anodes
Expanded metal anodes
Tubular anodes
Special-shaped electrodes
Custom dimensions based on engineering drawings
Typical Industries
Electroplating
Surface finishing
Steel manufacturing
Hydrometallurgy
Chemical processing
Environmental protection
Water and wastewater treatment
Mining and metal recovery
Electrochemical equipment manufacturing
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