Do you really know lithium battery ceramic diaphragm?

1. Lithium battery requirements on diaphragm

The performance of diaphragm determines internal resistance and interface structure of battery, which in turn determines battery capacity, safety performance, charge and discharge density and cycle performance. Therefore, these characteristics need to meet

2. Ceramic coating special diaphragm

Ceramic-coated special separator: It base on PP, PE or multi-layer composite diaphragm. The surface coated with a layer of Nano-scale aluminum oxide material. After special treatment, it tightly bonded to the substrate. Significantly improve the high temperature performance and safety of lithium ion batteries. Ceramic-coated special diaphragms are especially suitable for power batteries.

3. Ceramic coating special diaphragm coating

Al2O3 is a high hardness compound with a melting point of 2054 ° C and a boiling point of 2980 ° C. Ionized ionic crystals at high temperatures commonly used in the manufacture of refractory materials. As an inorganic substance, aluminum oxide (abbreviated as alumina) has high thermal stability and chemical inertness, and is a good choice for battery separator ceramic coating.

4. Performance requirements of ceramic diaphragm for alumina

5. The advantages of coating alumina diaphragm

6. high-purity aluminum oxide technical indicators for lithium battery separator

7. Comparison on visual state of ceramic diaphragm after baking at high temperature over 30 minutes with ordinary diaphragm

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