Silicon-based energy storage devices with fluorinated polymer containing electrolyte additives

An energy storage device comprising:

• a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode;
• a separator between the first electrode and the second electrode;
• an electrolyte;
• and
• at least one electrolyte additive comprising a compound selected from Formula (C):
• wherein:
• each R5 and R6, is independently selected from the group consisting of —H, —OH, alkyl, alkenyl, nitrile, carboxyl, —Cl, —F, —CF3, and —OCF3;
• each A and B is
• each optionally substituted by —F, —CF3, or —CH3;
• each Rb, and Rc is independently selected from the group consisting of —CF3,
• each optionally substituted by —F;
• and
• each q and r is independently selected from an integer from 1-5.