Mitsubishi Chemical improves polypropylene porous film for lithium batteries

The porous structure of polypropylene-based films was optimized in view of pore diameter, porosity, pore distribution and other structural factors, thereby improving the permeability of lithium ions. Application of this film as a separator in a lithium ion battery led to about 20% enhanced capacity of the cell while maintaining short circuit resistance against mechanical deformation. Furthermore, the equipment could be downsized.

JST news release, September 4, 2018

 

Mitsubishi Chemical improves polypropylene porous film for lithium batteries
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