The highly heat-resistant separator coated with Teijinconex meta-aramid

Hydrocarbon polymer electrolyte membrane
Hydrocarbon polymer electrolyte membrane (Photo credit: SandiaLabs)
The highly heat-resistant separator coated with Teijinconex meta-aramid
The new separator, which is coated with a fluorine-based compound, is designed for use in laminated-type LIBs. Such LIBs, which feature a gel polymer electrolyte, are used in tablets and smartphones. The new separator readily adheres to the polymer electrolyte and is highly resistant to oxidation, resulting in LIBs that offer greater safety, higher output and longer lifespans.
The highly heat-resistant separator coated with Teijinconex meta-aramid maintains its shape even at 250℃. In spot heating tests, Teijin has verified that the separator does not break down even at 350℃. Also, thanks to the separator's superior resistance to oxidation, it enables unprecedented capacity and energy density for liquid-electrolyte cylindrical LIBs used in products including PCs and vehicles. These LIBs also achieve higher levels of safety and longer lifespans than conventional LIBs.
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