1. Nanofiber specific surface can reach 8.03 m~2/g and the mean fiber diameter is 332 nm. 2. Ceramic and nanofiber can control the separator pore structure. The smallest mean pore size of the prepared separators can reach 140nm. 3. Nano-based multilayer separator has much larger porosity than PP separator and which is more easy wetted by electrolyte. 4. The thermal shrinkage of nano-based multilayer separator is less than 1% at 150°Cfor 2h treatment, but which of PP separator is about 25%.
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