Hybrid Coated Separator 9+3+1μm

Product Overview

The Hybrid Coated Separator 9+3+1μm from Huizhou BestGemo New Energy is a precision-engineered separator designed for high-performance lithium-ion batteries, particularly suited for applications requiring enhanced thermal stability and strong electrode adhesion. This variant features a 9μm base film, a 3μm ceramic coating, and a 1μm PVDF layer, delivering a balanced architecture that combines the rigidity of ceramic particles with the adhesive properties of PVDF. The ceramic layer provides excellent dimensional stability at elevated temperatures, while the PVDF layer ensures robust bonding to electrodes, reducing interfacial resistance and improving cell integrity during repeated charge-discharge cycles.

With a controlled porosity of 40±5% and a peel strength of ≥40 N/m, this separator supports consistent electrolyte wetting and reliable adhesion throughout the battery's operational life. The 9+3+1μm configuration offers a middle-ground solution between ultra-thin designs for consumer electronics and thicker variants for high-energy-density cells, making it a versatile choice for power batteries, energy storage systems, and other demanding applications.

Key Features

• Hybrid coating architecture integrates a 3μm ceramic layer for thermal dimensional stability and a 1μm PVDF layer for enhanced electrode bonding, optimizing both safety and performance.
• The 9+3+1μm thickness provides a balanced trade-off between mechanical strength and ionic conductivity, suitable for a wide range of cell designs.
• Porosity maintained at 40±5% ensures uniform electrolyte uptake and efficient ion transport across the separator membrane.
• Peel strength of ≥40 N/m guarantees robust adhesion to electrodes, minimizing the risk of layer separation during cell assembly and operation.
• Consistent coating uniformity reduces defects such as pinholes and particle shedding, contributing to higher manufacturing yields.

Technical Specifications

Applications

The 9+3+1μm hybrid coated separator is particularly well-suited for applications where thermal runaway prevention and electrode adhesion are equally critical. Its balanced thickness makes it adaptable to various cell formats, from prismatic to pouch cells, and it performs reliably under aggressive charging conditions.

• High-capacity power batteries for electric vehicles and plug-in hybrids, where fast-charging capability and robust safety margins are essential.
• Stationary energy storage systems that prioritize long-cycle-life and thermal stability.
• Mid-to-high-energy-density consumer electronics, such as laptops and power tools, requiring a compact yet durable separator.
• 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 for the 9+3+1μm configuration.
• 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 for the 9+3+1μm variant. 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.