Positive Electrode Yellow Tab Tape 0.1mm Thickness Customizable Width for Lithium Battery Tab Sealing

Product Overview

This specialized tab tape is a high-performance polymer sealing film engineered specifically for positive electrode lead packaging in lithium-ion battery manufacturing. Developed to bridge the interface between metal current collector tabs (such as aluminum) and aluminum laminated pouch films, the material provides outstanding thermal bondability, electrical insulation, and chemical stability. By preventing direct metal-to-foil contact and forming a robust hermetic seal during thermal encapsulation, this composite film effectively mitigates micro-leakage risks, protects against internal short circuits, and withstands harsh organic electrolyte environments.

Designed primarily for pouch-type lithium polymer cells, solid-state battery prototypes, and prismatic soft-pack energy storage devices, the product serves battery pilot lines, automated cell production facilities, and advanced electrochemistry research institutes. Its uniform chemical structure and multi-layer composition ensure compatibility with high-speed automated tab pre-welding and high-pressure top-and-side sealing equipment. Whether applied to high-energy consumer electronics cells or high-drain automotive power batteries, the tape delivers consistent sealing integrity across varied operating temperatures and cyclic pressure profiles.

Built under strict quality management standards, each batch is thoroughly inspected using precision optical dimensional measurement and stringent defect screening protocols. The surface is processed to eliminate curling, wrinkles, scratches, and micro-voids, ensuring seamless automated feeding and zero blistering during the thermal compression cycle. By combining dimensional consistency with chemical inertness against corrosive electrolyte salts like LiPF6, this sealing solution offers industrial cell packagers and materials scientists the reliability required for zero-defect cell manufacturing.

Key Features

• Engineered Positive Tab Compatibility: Specially formulated for aluminum positive electrode tabs, ensuring optimal adhesive bonding and hermetic fusion with outer pouch layers during heat pressing.
• Precision Calibrated Thickness: Standardized nominal thickness of 0.1 mm delivers uniform heat transfer, reliable dielectric isolation, and smooth transition profiles without excessive edge steps or stress concentrations.
• High-Precision Customizable Widths: Available in standard 8 mm and 10 mm widths with ultra-tight manufacturing tolerances of ±0.01 mm, alongside fully customizable slit widths to fit proprietary tab designs.
• Defect-Free Surface Morphology: Manufactured under stringent optical inspection standards to ensure the film is free of bubbles, surface wrinkles, creases, edge burrs, impurities, or tape misalignment.
• Superior Thermal and Pressure Resistance: Retains dimensional stability during high-temperature, high-pressure sealing cycles without excessive lateral melt-squeeze or dielectric thinning.
• Robust Chemical and Electrolyte Inertness: Outstanding resistance against organic carbonate solvents and lithium hexafluorophosphate electrolytes, preventing delamination, swelling, or premature cell failure.
• Versatile Color and Formulation Options: Available in positive yellow along with complementary milky white and black variants to accommodate diverse electrode configurations and automated optical inspection systems.

Applications

Technical Specifications

Why Choose This Product

• Stringent Quality Inspection Standards: Every production roll is qualified against rigorous AQL sampling standards (AQL-3 0.65 for dimensional precision and AQL II 0.65 for optical clarity), providing dependable cell manufacturing yields.
• Precision Extrusion and Slitting: With a width tolerance controlled to ±0.01 mm and smooth edge slitting, this tape minimizes feeding jams in automated taping systems and prevents localized stress points at the seal joint.
• Comprehensive Material Resilience: Specifically engineered to resist degradation from high-voltage positive cathode potentials and harsh corrosive electrolyte chemistries over thousands of charge-discharge cycles.
• Flexible Tailored Dimensions: In addition to standard 8 mm and 10 mm configurations, bespoke slit widths and spool lengths are available to match custom electrode tab dimensions and unique pouch cell architectures.

Contact our technical sales team today to request custom slit widths, obtain technical data sheets, or receive quotation details for your battery assembly line.

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