PVDF Coated Separator 7+1μm

Product Overview

The PVDF Coated Separator 7+1μm from Huizhou BestGemo New Energy is an advanced membrane solution engineered for high-rigidity and long-cycle lithium cells. This separator is manufactured with a precise polyvinylidene fluoride (PVDF) coating applied to a base film, creating a functional layer that significantly improves the interface between the separator and the electrode. By enhancing electrode adhesion and electrolyte wettability, this product directly addresses common performance bottlenecks in modern lithium battery design, offering manufacturers a reliable component for demanding energy storage applications.

Constructed in a 7+1 μm thickness configuration, this PVDF coated separator is optimized for use in cells where mechanical integrity and electrochemical stability are critical while maintaining a thinner profile for higher energy density targets. The coating not only bonds firmly to the electrode surface but also promotes rapid and uniform electrolyte absorption, which is essential for reducing internal resistance and maintaining consistent ion transport over time. This product is suitable for battery producers seeking a drop-in separator solution that improves processability and final cell reliability without requiring significant modifications to existing assembly lines.

Key Features

• Enhanced Electrode Adhesion: The PVDF coating provides a strong bond between the separator and electrode layers, which helps maintain electrode stack integrity during charge-discharge cycles and reduces the risk of delamination in high-rigidity cell designs.
• Superior Electrolyte Wettability: The porous PVDF layer facilitates faster and more thorough electrolyte uptake compared to standard polyolefin separators, ensuring consistent ionic conductivity across the entire electrode area.
• Improved Cycle Life: By stabilizing the electrode-separator interface and promoting uniform electrolyte distribution, this separator contributes to reduced capacity fade and extended operational lifespan in long-cycle lithium cells.
• Controlled Porosity: With a porosity range of 38% to 40%, the separator offers an optimal balance between ionic permeability and mechanical strength, supporting efficient lithium-ion transport while maintaining physical robustness.
• Customizable Peel Strength: Peel strength can be tailored to specific requirements (N/m) to match different electrode chemistries and cell assembly processes, allowing for integration flexibility across a range of battery formats.
• Thin Profile Design: The 7+1 μm configuration enables manufacturers to achieve higher energy density targets while still benefiting from the functional advantages of PVDF coating, making it suitable for compact and lightweight cell designs.

Technical Specifications

Applications

This PVDF coated separator is specifically designed for use in lithium batteries that demand high structural rigidity and prolonged service life, with a thinner profile suited for energy-dense applications. It is particularly well-suited for cells subjected to repeated cycling, moderate-to-high discharge rates, and environments where dimensional stability of internal components is essential. The product performs reliably in both prismatic and cylindrical cell formats where electrode adhesion directly impacts safety and performance.

• High-capacity energy storage cells for grid backup or renewable integration.
• Long-cycle power batteries for electric vehicles and industrial equipment.
• Portable energy storage systems requiring stable discharge characteristics.
• Specialty lithium cells for aerospace, marine, or high-vibration applications.
• Custom battery packs where enhanced electrode bonding prevents internal short circuits over extended use.

Quality Assurance

• Strict quality management is implemented throughout every stage of production, from raw material receiving to final packaging, ensuring consistency in thickness, porosity, and coating uniformity.
• Each batch undergoes full inspection prior to shipment, including verification of dimensional specifications and physical properties, so that only conforming product reaches your facility.
• Sampling and testing protocols are aligned with the reference parameters supplied, allowing for traceable accuracy in porosity and peel strength reporting.
• Technical support is available to assist with integration questions, and product samples can be provided upon request for evaluation under your specific cell manufacturing conditions.

OEM/ODM Customization

Huizhou BestGemo New Energy supports OEM and ODM projects involving the PVDF coated separator. We can adjust the peel strength specification to match your electrode coating formulation and assembly method, and we work with you to confirm the appropriate thickness option for your cell design. Custom roll dimensions, core sizes, and packaging formats are also available upon request to align with your production line requirements. Our engineering team is prepared to discuss your application details and provide tailored guidance without obligating you to a minimum order commitment.