Nickel Tab with Adhesive Polymer Tape as Negative Terminal for Pouch Cell, Width: 4 mm

Technical Specification:

1. Material Composition:
   • Base Material: Nickel (Ni)
     • Purity: ≥99.5% (battery-grade nickel for optimal conductivity and corrosion resistance).
   • Adhesive Polymer Tape:
     • High-temperature-resistant adhesive backing for secure insulation and sealing.
2. Physical Dimensions:
   • Width: 4 mm
   • Length: Customizable based on pouch cell requirements.
   • Thickness: Typically 0.1–0.3 mm (nickel tab), with adhesive layer adding minimal thickness.
3. Adhesive Properties:
   • Thermal Resistance: Adhesive tape withstands temperatures up to 150°C (varies by specification).
   • Chemical Resistance: Resistant to battery electrolytes, ensuring durability.
   • Insulating Capability: Ensures electrical isolation while maintaining secure attachment to the battery tab.
4. Electrical Properties:
   • High Conductivity: Nickel offers excellent electron transfer efficiency with low resistance.
   • Thermal Conductivity: Supports heat dissipation to maintain safe battery operation.
5. Mechanical Properties:
   • Ductility: Provides flexibility for bending and welding during battery assembly.
   • Strength: Sufficient tensile strength to endure mechanical stress during operation.
6. Surface Treatment:
   • Optional polishing or plating to enhance weldability and reduce oxidation.

Applications:

1. Primary Applications:
   • Negative Terminal Tab for Pouch Cells:
     • Acts as the primary connection between the anode (negative electrode) and external circuits or battery pack.
2. Industries:
   • Electric Vehicles (EVs):
     • Essential for high-performance batteries in EVs, hybrid electric vehicles (HEVs), and plug-in hybrids (PHEVs).
   • Portable Electronics:
     • Powers pouch cells in smartphones, tablets, laptops, and wearables.
   • Energy Storage Systems (ESS):
     • Used in modular pouch cell assemblies for renewable energy storage and grid applications.
3. Advantages for Applications:
   • Integrated Adhesive Tape:
     • Simplifies assembly by securely holding the tab in place, reducing the need for additional insulation or supports.
   • Corrosion Resistance:
     • Nickel ensures long-term reliability in chemically active environments.
   • Enhanced Safety:
     • Adhesive polymer tape prevents short circuits by providing a strong insulating barrier.
   • Ease of Assembly:
     • Flexible, lightweight, and adhesive-backed design reduces handling time during battery manufacturing.
4. Specialized Uses:
   • Custom Battery Packs:
     • Ideal for modular and high-capacity pouch cell battery designs.
   • High-Temperature Applications:
     • Suitable for batteries operating under elevated temperatures due to its thermally resistant adhesive backing.
   • Lightweight Designs:
     • Used in aerospace and portable device applications where weight is critical.
5. Challenges and Mitigation:
   • Adhesive Degradation:
     • Extended exposure to extreme temperatures or harsh chemicals may degrade the adhesive.
       • Solution: Use adhesive tapes with enhanced thermal and chemical resistance.
   • Weldability:
     • Adhesive backing may interfere with direct welding.
       • Solution: Ensure proper alignment and techniques to avoid the adhesive area during welding.

Summary:

The Nickel Tab with Adhesive Polymer Tape (Width: 4 mm) serves as an efficient and reliable negative terminal for pouch cells in lithium-ion batteries. It combines the high conductivity and corrosion resistance of nickel with the insulation and secure attachment provided by adhesive polymer tape. This integrated solution is ideal for high-performance applications such as electric vehicles, portable electronics, and energy storage systems, simplifying assembly and enhancing safety.