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Types of separators for lithium-ion batteries

The separators of lithium-ion batteries can be classified into different types based on their structure and composition. Currently, there are three common and important types in the market, namely porous polymer membranes, non-woven fabric separators, and inorganic composite membranes.

1. Porous polymer membrane

It refers to a lithium-ion battery separator with uniform pore distribution prepared by various methods such as mechanical methods, thermally induced phase separation, immersion precipitation, etc.

2. Non woven diaphragm

It is composed of directional or random fibers and is usually compounded with organic matter or ceramic gel to obtain a lithium-ion battery diaphragm with better chemical and physical properties.

3. Inorganic composite membrane

Lithium ion battery separators are mostly obtained by combining inorganic nanoparticles and high polymers.

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