Advantages of high purity alumina in the technical application of lithium battery separator coating

Advantage 1:

When the current is too high, the current can be blocked. When the current is too high, the material heats up, and the plate crystal structure of high-purity nano-alumina coating material will expand in volume, it will close the current conduction hole on the lithium battery diaphragm, thus playing a role in blocking the current, when the temperature drops, the volume of the material will contract, then the current conduction hole on the diaphragm will open again, using the special physical and chemical properties of the material, can greatly improve the safety performance of lithium batteries, so as to provide a high power lithium battery energy safety. This makes it possible for high-power lithium batteries to be charged and discharged safely and reliably at high energy levels.

Advantage 2: 

High purity alumina also has very good thermal conductivity, when the battery temperature is too high, this material can conduct heat very well, thus solving the problem of poor thermal conductivity of PP/PE materials.

Advantage 3: 

High purity alumina material also has excellent flame retardancy, this is because high purity alumina material itself is a very good flame retardant, even if the temperature is too high and reaches the zero burning point, the good flame retardant performance of the material will prevent a wide range of combustion or even explosion.