Chlor-alkali Anode and Cathode

Our Chlor-Alkali Anode & Cathode system is designed for zero-gap membrane electrolyzers, delivering high efficiency, low energy consumption, and stable long-term operation. Compatible with major industry designs, it can effectively replace systems from UHDE, AKC, NBZ, and CEC.

The system utilizes a titanium-based anode with advanced Ru-Ti coating and a nickel cathode, optimized for high current density and superior electrochemical performance in chlor-alkali production.

Key Features

• Optimized for zero-gap electrolyzer technology

• Low energy consumption and reduced cell voltage

• High current density operation capability

• Excellent corrosion resistance (Ti/Pd sealing surfaces)

• Stable electrode geometry and long service life

• Reduced leakage current and improved cell rigidity

• High chlorine purity and improved product quality

Electrode Materials

• Anode: Titanium substrate with Ru-Ti coating

• Cathode: Nickel-based structure with advanced cathode mesh design

• Sealing Surface: Titanium/Palladium (Ti/Pd)

Available Cell Sizes

• 2.7 m² electrolyzer

• 3.3 m² electrolyzer

Process Advantages

Compared to traditional graphite electrodes:

• Lower chlor-alkali potential

• Reduced coating consumption

• Higher chlorine purity

• Lower overall energy usage

• Improved operational stability

Electrochemical Reaction Principle

Anode Reaction (Oxidation)

Purified brine (NaCl solution) enters the anode chamber and is subjected to direct current:

• NaCl dissociates into Na⁺ and Cl⁻ ions

• Cl⁻ ions are oxidized at the anode to form chlorine gas (Cl₂)

• Remaining brine and chlorine gas are discharged

Cathode Reaction (Reduction)

In the cathode chamber:

Water dissociates into H⁺ and OH⁻ ions

H⁺ ions are reduced to form hydrogen gas (H₂)

OH⁻ ions combine with Na⁺ ions to produce caustic soda (NaOH)

Overall Output

Chlorine gas (Cl₂)

Hydrogen gas (H₂)

Sodium hydroxide (NaOH)

Applications

Chlor-alkali chemical plants

Caustic soda production facilities

Industrial chlorine and hydrogen generation

Electrochemical processing systems

System Advantages

Improved energy efficiency and reduced operating costs

Enhanced durability in highly corrosive environments

Reliable continuous operation under industrial conditions

Compatible with modern membrane electrolyzer technologies

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