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Li-ion Battery Separator


Li-ion Battery has substituted traditional battery in mobile phone, pc, camera. Large capacity Li-ion Battery has been installed in electrical vehicle, which is going to be one of the main batteries in 21 century.  


With the application range of Li-ion Battery becoming larger, the quality of Li-ion Battery Separator will influence the quality of battery.

Currently, there are two main products:

  • High wet PE film + Single/double ceramic coating 

  • High wet PE film + Gel/ceramic composite coating

Tianjin DG Membrane Tech. Co., Ltd, which is the subsidiary company of SOJO Group, produces this product with 14 patents for invention including 3 PCT patents. And DG is focus on R&D, which always in the leading place in this industry.