Patent ID: 11942599
Assignee: ENEVATE CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 4:
5. 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; and
an electrolyte composition; wherein, said electrolyte composition comprises at least one electrolyte additive comprising an asymmetrical alkylsulfonyl imide or alkylene sulfonylimide salt; and, wherein the electrolyte additive is of formula (Ia) or (Ib):, , wherein X is Na, K, Rb, Cs, Fr, Mg, Ca, Zn or Al;
R1 and R2 are different and are selected from the group consisting of H, OH, alkylene, alkoxy, alkenyl, alkenylene, alkynyl, alkynylene, cycloalkyl, cycloalkylene, aryl, arylene, heteroaryl, heteroalkyl, heteroalkylene, heterocycloalkyl, and heterocycloalkylene, which may be also further optionally substituted.