Promising solvent of 12,12-diethyl-2,5,8-trioxa-12-silatetradecane for lithium secondary battery

A novel partly silanized ether solvent of 12,12-diethyl-2,5,8-trioxa-12-silatetradecane is proposed for Li/organo-sulfide or Li/S battery in this paper. It is superior to other ether solvent in high boiling point, high flash point and thus resulted high safety. The conductivity of it-contained electrolyte was measured to be 5.7 x 10(-4) S/cm at 25 degrees C, which meets the requirement for practical application. Anodic polarization curve of it-contained electrolyte attests to its strong resistivity to electro-oxidation, and AC impedance measurement also approves that it has a good compatibility with lithium electrode. Cycling test of Li/1 M LiTFSI in 12,12-diethyl-2,5,8-trioxa-12-sitatetradecane/PABTH cell indicates a good utilization of the active material in the new electrolyte system. (C) 2008 Elsevier B.V. All rights reserved.