Hybrid Coated Separator 12+4+1μm

Product Overview

The Hybrid Coated Separator (Ceramic + PVDF) from Huizhou BestGemo New Energy is a dual-functional separator engineered for premium power and energy-storage battery systems. This specific variant, with a thickness configuration of 12+4+1 μm, integrates a ceramic coating and a polyvinylidene fluoride (PVDF) layer onto a base film, delivering a balanced combination of thermal stability and adhesion. The ceramic component enhances the separator’s resistance to high-temperature shrinkage, while the PVDF layer provides strong bonding to electrodes, reducing interfacial resistance and improving cell integrity during cycling.

Designed for manufacturers who require both safety and performance, this 12+4+1 μm configuration offers a thicker ceramic layer (4 μm) compared to other variants, providing enhanced thermal dimensional stability and mechanical robustness. This makes it particularly suitable for large-format cells and high-energy-density batteries where thermal runaway prevention is critical. With a controlled porosity of 40±5% and a peel strength of ≥40 N/m, this product supports consistent electrolyte wetting and reliable adhesion throughout the battery’s operational life.

Key Features

• Hybrid coating architecture combines ceramic particles for thermal dimensional stability with a PVDF layer for enhanced electrode bonding.
• The 12+4+1 μm configuration provides a thicker ceramic layer, offering superior resistance to thermal shrinkage and improved mechanical strength for demanding applications.
• Porosity maintained at 40±5%, facilitating uniform electrolyte uptake and ion transport across the separator membrane.
• Peel strength of ≥40 N/m ensures robust adhesion to electrodes, minimizing the risk of layer separation during cell assembly and operation.
• Balanced mechanical and thermal properties contribute to safer battery operation under elevated temperatures and mechanical stress.

Technical Specifications

Applications

This 12+4+1 μm hybrid coated separator is particularly suitable for cell formats where both thermal runaway prevention and electrode adhesion are critical. The thicker ceramic layer provides enhanced protection against high-temperature shrinkage, making it ideal for large-format and high-capacity cells that generate more heat during operation.

• High-capacity power batteries for electric vehicles and plug-in hybrids requiring fast-charging capability and robust safety margins.
• Stationary energy storage systems where long-cycle-life and thermal stability are prioritized.
• Large-format prismatic and pouch cells that benefit from enhanced mechanical strength and thermal dimensional stability.
• High-voltage lithium-ion cells that benefit from reduced interfacial resistance between separator and electrodes.

Quality Assurance

• Every production batch undergoes strict process control to ensure consistent thickness, porosity, and coating uniformity across all separator configurations.
• Each shipment is subject to full inspection prior to dispatch, verifying that physical properties meet the specified ranges for porosity and peel strength.
• Technical support is available to assist with product integration, handling guidelines, and troubleshooting during cell assembly.
• Samples can be provided upon request for evaluation, allowing customers to verify performance under their specific processing and testing conditions.

OEM/ODM Customization

Huizhou BestGemo supports OEM and ODM requests for separator specifications, including adjustments to coating thickness ratios (ceramic-to-PVDF), base film selection, and roll dimensions. Custom width, core size, and winding tension can be aligned with your existing production line. Please contact our engineering team with your target parameters—we will evaluate feasibility and provide tailored recommendations based on your battery chemistry and assembly process.