Technical Notes:

Redox Shuttles for L ithium lon Batteries

1. Provides a long term intrinsic overcharge protection of lithium-ion batteries.

2.Maintains the safe operation of lithium-ion batteries.

3. Highly-soluble in conventional non-aqueous, carbonate based electrolytes. 4. Increases battery long-term stability and oxidation potential .

Electrochemical Properties:

1. ANL -RS21 5 mM exhibits a redox potential of about 4.05v, in electrolytes (1.2 M L _iPF6 in 3:7 wt/wt mixtures of EC/EMC. ^[1]

2. The redox shuttle in aprotic solvents can be used from -30· c to 70 c and are stable in the electrochemical window in which the cell electrodes and redox shuttle operates.

ANL -RS21 undergoes reversible electrochemical oxidation to form stable cation-radical salts. ^[2]

References:

1. US 2013/0288137 A1.

2.Org.Lett.，2009.11.1153