Nitrogen silylated compounds as additives in non-aqueous solutions for electrochemical cells

A secondary battery comprising

• a. an anode,
• b. a cathode comprising lithium, and
• c. an electrolytic solution comprising
• i. a non-aqueous solvent,
• ii. a salt, and
• iii. a nitrogen silylated additive having the formula
• wherein R1, R2, and R3 are each independently selected from the group consisting of hydrogen, halogen, C1-C20 alkyl, C1-C20 alkenyl, and aryl residue, wherein X and Y are each independently selected from the group consisting of hydrogen, halogen, C1-C20 alkyl, C1-C20 alkenyl, aryl, —O—, —S—, —CO—, —CO2—, —SO—, —SO2—, —NR9—, —NR10R11, —PR12—, and —Si(R13R14)—, wherein R9 to R14 are each independently selected from the group consisting of hydrogen, halogen, C1-C20 alkyl, C1-C20 alkenyl, and aryl, and wherein Z is selected from the group consisting of nothing, a direct bond between X and Y, —O—, —S—, —CO—, —CO2—, —SO—, —SO2—, —N(R15)—, —NR16R17, —PR18—, —Si(R19R20)—, and [C(R21)2]m—, wherein R15 to R21 are each independently selected from the group consisting of hydrogen, halogen, C1-C20 alkyl, C1-C20 alkenyl, and aryl, and m is a number from 1 to 6.