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Hydrophilic battery separator

Hydrophilic battery separator has undoubtedly played a huge role in promoting the commercialization of zinc-nickel batteries. 

Description

Introduction

Hydrophilic battery separator is a diaphragm which produced and processed by our company through self-developed technology and equipment. The world breakthrough of this diaphragm technology has undoubtedly played a huge role in promoting the commercialization of zinc-nickel batteries. 

This hydrophilic diaphragm has the comprehensive advantages of strong liquid absorption, retention capacity and prevention of dendritic puncture. It can also be widely used in zinc-manganese rechargeable batteries, water-based lithium batteries, iron-nickel batteries, nickel-hydrogen batteries, zinc-silver batteries and other fields.

 

Features

1. PP dendrite prevention; 
2. Resistance to puncture; 
3. Strong diaphragm retention rate; 
4. High temperature resistance, the diaphragm will not deform when stored at 85℃; 
5. The battery prepared by it has long cycle life, low self-discharge and high capacity recovery rate

 

Specifications

Project Name Testing Method Standard Standard Standard Unit
Thickness GB/T 6672-2001 25±2.0 40±3.0 70±3.0 μm
Area Density GB/T 24218.1-2009 14.5±2.5 20±3 29.5±5 g/m2
Porosity GB/T 24218.1-2009 37~48 37~48 37~48 %
Air Permeability GB/T 458-2008 400±100 600±100 400±100 Gurley,100ml/S
Tensile Strength (longitudinal) GB/T 1040.3-2006 ≥100 ≥100 ≥100 MPa
Tensile Strength (Horizontal) ≥60 ≥20 ≥20 MPa
Expansion Rate
(Longitudinal)
90.0±2.0 degrees 
Constant temperature for 2 hours
≤3.0 ≤3.0 ≤3.0 %
Expansion Rate
(Horizontal)
≤2.0 ≤2.0 ≤2.0 ≤2.0
Puncture Strength / ≥6.5 ≥7.5 ≥7.5 N
Resistivity Check the resistivity 
After the diaphragm is soaked in 30% KOH for about 1.5 hours
≤0.20 ≤0.20 ≤0.20 Ω*cm2

 

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