Metal Organic Framework (MOF) Based Lithium Ion Electrolyte

Physical Sciences Inc. (PSI) proposes to demonstrate a lithium ion battery electrolyte/separator system capable of high performance operation with improved safety at operating temperatures between -40 and 70oC. Continuously nano-porous structures, fabricated as thin battery electrode separator membranes will be used to sequester inexpensive liquid lithium ion battery electrolytes as a composite liquid/solid state battery separator assembly. Calculations indicate that due to freezing point depression, reduced vapor pressure and anion size exclusion properties of the nano-porous materials, the proposed electrolyte/separator assemblies will have low temperature performance to -60oC, reduced electrolyte vapor pressure at elevated temperatures and Li+ transference numbers approaching 1.0. BENEFIT: The primary market for the proposed technology is the military in particular for space applications. The temperature extremes and long cycle life demands of space deployment would benefit from the robust electrolyte. Similarly, the proposed technology would be beneficial in the uniquely harsh environments in which battery powered combat devices operate. The technology can be further extended to commercial devices such as hybrid and electric vehicles, cordless power tools, remote sensing devices, and portable communications such as cell phones and two-way radios.