Teijin signs License Agreement with Shanghai Energy to develop EV Battery Separators

Teijin Limited announced that it has signed an technical license agreement with Shanghai Energy New Materials Technology Co., Ltd.(SEMCORP) for the manufacture of solvent-based coating separators used in lithium-ion secondary batteries (LIBs) for electric vehicles.

The agreement covers Teijin's proprietary technologies and patents related to coating and production processes for fluorine- and solvent-based coating separators that improve the performance and safety of EV LIBs. Teijin aims to integrate its technologies with SEMCORP's strengths in substrate production capacity and cost competitiveness.

Teijin and SEMCORP will explore opportunities to grow their partnership in the automotive field by meeting various demands for solvent-based coating separators. Specifically, the two companies plan to develop separators that enhance the capacity, performance, durability and safety of EV LIBs.

Teijin, through its development of LIB separators for EVs, aims to help to realise United NationSustainable Development Goals or SDGs for reducing environmental loads, such as CO2 emissions, and thereby will continue to strive being a company that supports the society.

LIBs are widely used in electronic devices such as smartphones and tablets. The growing popularity of EVs is accelerating demands for LIBs that can withstand long-distance driving and ensure safe performance. Teijin has developed two types of polyethylene-based coated separators with its proprietary technologies—one coated with Teijinconex, a highly heat-resistant meta-aramid, and the other coated with fluorine-based compounds.

Teijin currently supplies these separators for LIBs used in consumer goods, but larger production capacity and higher cost competitiveness are required in supplying separators for the growing EV LIB.