Inventors:
Mary A. Hendrickson - Forked River NJ, US
Edward J. Plichta - Howell NJ, US
Assignee:
The United States of America as represented by the Secretary of the Army - Washington DC
International Classification:
H01M 6/16
Abstract:
A more efficient LiPFlithium-ion electrochemical system composed of a phosphate free, borate lithium salt electrolyte LiTPTB composed of LiBCFHin a ternary mixed organic solvent containing a 1:1:1 volume ratio of EC, DMC and EMC is provided. The borate salt of the LiTPTB electrolyte decomposes at temperatures above 110 C. and does not react with water and also has an oxidation potential of about 4. 4 V versus lithium, making it suitable for use in high voltage lithium-ion cells and batteries. A 0. 3 to 1. 0 M molar concentration of LiTPTB composed of LiBCFHin a ternary mixed organic solvent containing a 1:1:1 volume ratio of EC, DMC and EMC is also provided.