DuPont develops polyimide separator for lithium-ion batteries


DuPont Co. has a new polyimide-based separator for lithium-ion batteries that will improve the power and life of batteries for hybrid and electric cars.

The Wilmington, Del.-based company also is building a facility near Richmond, Va., to make its new Energain separators.

Separators are a film positioned between the two electrodes in every battery, functioning as a barrier that prevents the electrodes from touching, while letting lithium ions pass between...
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