Advantage 1: When the current is too large, it can block the current. The lithium battery separator of PP/PE material is a through hole. When the current is too large, it is easy to cause perforation, which causes the lithium battery to burn or explode, and the high purity alumina (VK-L500G) is used as the coating material and bonding. The use of the agent together on the surface of the PP/PE material can serve as a tuning hole, because the high-purity alumina is a plate-like crystal structure, when the current is too large, the material is heated, and then the plate-like crystal structure is high-purity nanometer. The alumina coating material expands in volume, which closes the current conducting hole on the diaphragm of the lithium battery, thereby blocking the current. When the temperature drops, the volume of the material shrinks, and the current conducting hole on the diaphragm. It will be re-opened, and the special physical and chemical properties of the material can greatly improve the safety performance of the lithium battery, thereby providing a high-energy safety and safe and reliable charging and discharging of the high-power lithium battery.
Advantage 2: High-purity nano-alumina (VK-L500G) also has very good thermal conductivity. When the battery temperature is too high, this material can conduct heat transfer well, thus solving the problem of poor thermal conductivity of PP/PE materials.
Advantage 3: High-purity nano-alumina (VK-L500G) material also has excellent flame retardancy, because high-purity alumina material itself is a very good flame retardant, even if the temperature is too high, reach the combustion zero point The good flame retardancy of the material prevents a wide range of combustion or even explosion.
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Label: High-purity alumina in lithium battery separator coating technology application advantages
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