Differences and comparisons between wet and dry separators for lithium batteries

Differences and comparisons between wet and dry separators for lithium batteries:
1. The process of the dry process is simple, and the fixed asset investment of the production line is smaller than that of the wet process, but it is difficult to control the temperature and other indicators of the dry process, so the wet process is simpler.
2. In addition to the different process, the dry method and the wet method are also different in raw materials. The raw materials used in the dry method have good fluidity and low molecular weight, so the high temperature can only reach 135 degrees, and they will shrink when heated, which is not suitable for high-power, high-capacity, high-stability batteries. terminal lithium battery products. The wet method uses non-flowing, high-molecular-weight raw materials (the material is more stable), and the thermal shutdown temperature can reach 180 degrees, which can ensure the safety of high-power lithium-ion batteries. The wet method has a thinner diaphragm and is not easy to tear, and the overall cost is higher than that of the dry method. Diaphragm, so wet diaphragm is mainly used in high-end lithium battery products.
3. In the production of general lithium batteries, the dry method has advantages, such as low cost, less pollution, and more uniform pores; in terms of high-power batteries, the wet method has advantages, mainly in terms of safety and heat shrinkage.