Stainless Steel 304 Customized Non-standard Capillary Electrode Tube For Lithium Battery

A electrode tube is a small-diameter, thin-walled, hollow stainless steel tube made to exacting specifications dictated by the lithium battery applications. The important role is typically to act as a conductor for current collection or distribution within an electrode assembly; To serve as a protective sheath or housing for sensing elements (like reference electrodes, temperature sensors); To function as a conduit for electrolyte filling, pressure equalization, or gas venting (requiring additional modifications such as micro holes); To provide a stable, conductive, and inert structural element within the complex electrochemical environment of a Lithium Battery cell. Our company has manufactured stainless steel capillary tubes for dozens of years. We can not only provide standarded round capillary tubes, but also provide customized non-standard capillary tubes, such as electrode tube, instrument tube, flared tube, bend tube, and so on. If you have any similar stainless steel needle tube or capillary tube products need to custom. Welcome share your drawing or sample to us for a quotation.

Features & Advantages:

• Extreme Precision: Manufactured to meet exact dimensional tolerances for reliable integration.
• Superior Corrosion Resistance: Withstands harsh lithium battery electrolyte chemistry (SS316 is superior to SS304 for chloride resistance).
• Excellent Hermeticity: Can be welded/sealed to create leak-proof pathways or housings.
• High Temperature Stability: Maintains properties under battery operating and potential abuse temperatures.
• Customization Flexibility: Can be customized according to the drawing or sample.
• Good Electrical Conductivity: Suitable for current-carrying electrode components.
• Durability & Long Service Life: Resists degradation within the battery environment.

Manufacturing Steps:

• Precision Drawing: Cold drawing through dies to achieve exact dimensions and smooth surfaces.
• Controlled Annealing: To relieve stress, restore corrosion resistance, and achieve desired mechanical properties (e.g., soft temper for bending).
• Secondary Operations: Cutting, bending, flaring, laser welding, laser drilling, cleaning, passivation.
• Rigorous Cleaning And Packaging: Ultrasonic cleaning, vacuum baking, cleanroom packaging (plastic capped ends, sealed bags) to prevent contamination.

Why we choose stainless steel 304/316 for lithium battery electrode tubes?

• Excellent Compatibility
• Balance of Properties: It offers the best combination of corrosion resistance, strength, formability, manufacturability, and cost-effectiveness for these specialized components compared to alternatives like pure nickel or titanium.
• Good Scalability

Applications Of Non-standard Capillary Tubes:

• Lithium Battery
• Electronical Equipments
• Precision Instruments
• Medical Devices
• Medical Needle
• Aerospace Industry
• Jewelry Industry
• Sensor