What index requirement does cell diaphragm coating aluminum oxide （alumina )have?

1. High temperature resistance:
The aluminum oxide coating has an excellent 2113 temperature resistance of 5261, and can maintain the shape of the diaphragm above 180 degrees Celsius.

2. Gao 'an 4102 Integrity: 1653
Aluminum oxide coating can neutralize free HF in electrolyte, improve acid resistance and safety of battery.

3. High multiplier Performance:
Nano-alumina can form solid solution in lithium battery, which can improve the rate and cycling performance

4. Good infiltration:
Nano alumina powder has good liquid absorption and retention ability.

5. Unique self-closing characteristics:
The obturator characteristic of polyolefin diaphragm is maintained to avoid safety hazard caused by thermal runaway.

6. Low self-discharge rate:
AL2O3 coating increases the tortuous degree of the micropores and the self-discharge is lower than that of the ordinary diaphragm.

7. Long cycle life:
The mechanical micro - short circuit in the cycle process is reduced and the cycle life is improved effectively.