The
In the use of lithium batteries, when the battery overcharge or at higher temperatures, the separator need to have enough thermal stability (thermal deformation temperature > 200 ℃), to effectively isolate the battery positive and negative electrode contact, prevent short circuit, such as thermal runaway and even explosion accidents. Currently widely used polyolefin Separator, its melting point and low softening temperature (< 165 ℃), it is difficult to effectively guarantee the safety of the battery, and its low porosity and low surface energy, limiting the battery performance ratio. Therefore, it is very important to develop
Xiamen TOB technology research department has developed a new type of high temperature resistant porous membrane by adopting the wet process primary molding technology, which is low-cost to prepare and easy to quantify production. Preliminary study results show that thermal deformation temperature of the Separator is much higher than 200 ℃, and the thermal stability of the commercialization of non-woven Separator, can effectively guarantee the battery safety.