ESPIN TECHNOLOGIES, INC. — Department of Defense SBIR Phase I: MDA15-027

Description

eSpin Technologies will develop a new advanced liquid electrolyte separator for Li ion batteries which has the potential of having a significantly higher volumetric efficiency for electrolyte storage capacity and kinetics to distribute electrolyte flow within nanoporous channel efficiently.This new separator will be based on an advanced nanofiber construct with increased porosity and smaller porosize. The separator material will be a non-corroding and protective against toxicity of electrolyte. This advanced separator will also demonstrate excellent thermal stability over a range of temperature (-32 oC to 250 oC), and strength to withstand battery manufacturing operation. The gain in volumetric efficiency results from high surface area nanofiber material and the large number of small pores within the structure which not only stores electrolyte but aids in improved electrolyte distribution with speed.Advanced separators lower weight and thinner construct will result in lower flow and electrical resistance, thereby allowing electrolyte to penetrate and provide increased ionic conductivity and higher rate capability.