Technical Notes:

Organosilicon Electrolytes for L ithium lon Batteries

1. Silicon based electrolytes with polyethylene glycol oligomers improve thermal and electrochemical

stability of lithium-ion batteries;

Increases battery long-term stability;

3.Are less flammable than conventional organic carbonate-based solvents and maintain the safe i operation of batteries;

4. Improves conductivity and kinetics of the lithium salts;

Electrochemical and Physical Properties:

1. Viscosity 2.0 cP at 25'C; Conductivity of 0.8M L iBC B electrolyte: 1.29 x 10-3 s cm1 at 25'C. :

Boiling point 245'C; Glass tran sition tem perature -1 10'C 1, 2.

2.Soluble electrolytic lithium salts: L iBOB, LiPF6 (03-0325), and LiTFSI

.3.ANL -1S1M3 is non-hydrolyzable and less flammable than the alkoxysilane counterparts ^[2].

4. ANL -1S1M3 electrolyte cell test demonstrated good cycling performance in lithium-ion batteries, with a charge and discharge rate of C/5, cycled between 3.0 and 4.2 V at room temperature with only 9% capacity loss over 200 cycles ^[2].

References:

1.Electrochem. Commun., 2006, 8, 429.

2.J. Mater. Chem., 2010, 20, 8224.