DSA Titanium Anode for Saltwater Electrolysis

Product Overview

The Heart of Efficient Electrochlorination

For engineers managing electrochlorination systems, anode passivation and uneven current distribution are frequent operational headaches. Our DSA Titanium Anode Assembly is engineered specifically to solve these challenges in saltwater environments.

Built on a Grade 1 Pure Titanium (ASTM B265) substrate, this assembly features a thermally decomposed Ruthenium-Iridium (Ru-Ir) Mixed Metal Oxide coating. Unlike standard titanium plates, our nano-scale coating structure maximizes the catalytic surface area, ensuring stable chlorine evolution even in low-temperature or low-salinity seawater.

Why Choose a Finished Assembly?

As a specialized DSA titanium anode manufacturer, we don’t just sell raw plates. We deliver a complete, “plug-and-play” electrode stack.

• Precision Integration: We handle the machining of titanium plates, installation of PTFE/PVDF insulating spacers, and torque-controlled tightening of titanium terminal bolts.
• Risk Reduction: This pre-assembled solution eliminates the risk of short circuits caused by manual assembly errors on-site.
• Cost-Effective Maintenance: The detachable design allows for individual plate replacement or refurbishment.

Key Technical Specifications

We define our specifications based on rigorous testing standards to ensure transparency.

Note: For oxygen evolution environments (e.g., plating, cathodic protection), please request our Ir-Ta (Iridium-Tantalum) series.

Performance Verification (The “Invisible” Quality)

You cannot judge an MMO anode’s quality by its black appearance alone. Quality lies in the coating adhesion and crystal structure. Here is how we validate every batch from our coating plant:

Accelerated Life Test (NACE TM0108)

We simulate 5 years of usage in just 50 hours of extreme testing.

• Test Condition: 1 mol/L H₂SO₄ electrolyte at a massive current density of 20,000 A/m².
• Our Standard: The anode must sustain operation for >40 hours before voltage escalation. If a batch fails this test, it is scrapped.

Microstructure Analysis (SEM)

Our multi-stage sintering process creates a uniform “cracked-mud” structure. This morphology is intentional—it drastically increases the active surface area, providing more catalytic sites for the chlorine evolution reaction compared to smooth, dense coatings.

Design & Assembly Capabilities

We specialize in customizing the electrode stack to fit your specific electrolyzer cell dimensions.

• Monopolar & Bipolar Design: We can manufacture stacks in Monopolar (parallel connection for high current) or Bipolar (series connection for high voltage) configurations.
• Precision Gap Control: The gap between anode and cathode is critical. We use CNC-machined PTFE (Teflon) or PVDF spacers to maintain a consistent gap (e.g., 3mm ±0.5mm). Uniform gaps prevent “hot spots” that lead to localized coating failure.
• Anti-Corrosion Connections: All fasteners, including bolts, nuts, and washers, are made of high-grade titanium to eliminate galvanic corrosion risks.
• Reverse Polarity Ready: For self-cleaning chlorinators, we adjust the coating recipe (adding stabilizers) to withstand the physical stress of polarity reversal cycles.

Core Applications

• Sodium Hypochlorite Generators: For on-site disinfection of drinking water, power plant cooling loops (antifouling), and hospital sewage treatment.
• Swimming Pool Chlorinators: Compatible replacement cells for major brands; safe and chemical-free disinfection.
• Marine Electrochlorination: Durable performance for Ballast Water Management Systems (BWMS) and offshore platforms.
• Industrial Wastewater: Effective for ammonia nitrogen removal and COD degradation.

Recoating & Refurbishment Service

Extend your asset life. Don’t Scrap, Recoat! Titanium substrates typically outlast the MMO coating by decades. Instead of buying entirely new assemblies, send your used anode plates to us.

• Cost Savings: Recoating costs approximately 40-60% of a new anode.
• Performance: Restored to 100% activity, identical to a new unit.
• The Process:
  1. Stripping: Removal of old coating via molten salt or sandblasting.
  2. Etching: Acid etching to create a fresh, rough surface.
  3. Recoating: Application of new Ru-Ir nano-coating and sintering.
  4. Testing: Final XRF and Life Test validation.

Frequently Asked Questions (FAQ)

Q: What information is needed to get a quote for a custom assembly?

A: Please provide the Application (e.g., seawater), Current Density (A/m²), Effective Area/Dimension, or a simple drawing. If replacing an old part, photos and model numbers help significantly.

Q: Can your anodes withstand Reverse Polarity (Self-Cleaning) cycles?

A: Yes. For applications requiring reverse polarity, we use a specialized multi-layer coating formula that strengthens the bond between substrate and catalyst, preventing detachment.

Q: How do you prevent leakage in the assembly?

A: We use high-compression PVDF gaskets and torque each titanium bolt to a specific standard, ensuring a watertight and structurally sound seal for the electrolytic cell.

Q: Do you provide Origin Certification?

A: Yes, as an original manufacturer, we provide Form E, Certificate of Origin (CO), and Mill Test Certificates (MTC) with every shipment.

Contact Section

Ready to Optimize Your Electrolysis System?

Whether you need a custom assembly design, a bulk order of MMO anodes, or a cost-effective recoating solution, our engineering team is ready to assist.