AMS Improves Lithium-Ion Separator Technology

Advanced Membrane Systems of Billerica, Massachusetts, announced an important advancement in lithium-ion battery separator technology at the 41st Power Sources Conference. UltraLith™, a new separator material developed by the company, is said to offer significant improvements in performance power density compared to lithium-ion separators currently on the market.

UltraLith introduces over 70% porosity and less than 10 Gurley seconds of air permeability to yield a lower electrical resistance, more electrolyte uptake, and improved battery cycle life. Its 180°C resistance combined with a 135° to 140°C shutdown behavior provides the thermal stability to inhibit the loss of mechanical integrity that can lead to thermal runaway situations. A minimal thickness range of 15-25 microns frees up space for more active materials to increase battery power density. Its inherent material mechanical strength and packaging configuration simplifies the replacement of other separators in battery assembly lines.

UltraLith is competitively priced and will be available for sampling in the fourth quarter of this year. The technology will be available for licensing to third parties. Contact Garrin Sammi, Advanced Membrane Systems, phone: (978) 439-9261.