Using a Novel Family of Electrolytes to Extend the Safety and Temperature Range of Li-ion Batteries

ABSTRACT: The increasingly demanding mission requirements placed on Air Force applications have necessitated the use of higher energy density and higher power density storage systems capable of safe operation over a broader temperature range. MER Corporation and the University of Arizona are proposing a novel family of electrolytes appropriate for Air Force miniaturized lithium-ion battery use. These high quality lithium-ion transporting electrolytes will enable lithium-ion battery to operate through out a wide temperature range (-40 degrees C to +100 degrees C) with improved cycle life. A miniaturized smart recharge circuitry system, which is based on MER"s earlier version, will be developed in Phase I for Phase II prototype system. BENEFIT: MER"s proposed concept will provide an advanced Li-ion transporting electrolyte for immediate use by the Air Force. Lithium batteries using this electrolyte will provide power from subzero to nearly boiling hot temperatures while offering improved specific power and power density. MER"s goal is to develop an alternative in power storage, a safer higher performance lithium-ion battery. Incorporation of the proposed safe electrolyte materials in the Li-ion battery system will lead to significance improments in performance across a wide operational temperature range. The results of this work will provide lithium-ion batteries with a non-flammable electrolyte for use with naval aircraft and in commercial aviation applications.