Patent ID: 11901508
Assignee: ENEVATE CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. An energy storage device comprising:
a first electrode and a second electrode, wherein one or both 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 sulfonate ester compound; wherein the sulfonate ester compound is of formula (I):, where R1 and R2 are the same or different and are selected from the group consisting of H, alkyl, fluoro-alkyl, alkylene, alkenyl, alkenylene, alkynyl, alkynylene, cycloalkyl, cycloalkylene, aryl, arylene, heteroaryl, heteroalkyl, heteroalkylene and heterocycloalkylene, where the heteroatom in said heteroaryl, heteroalkyl, heteroalkylene and heterocycloalkylene group is N or S; and

wherein said Si-based electrode comprises silicon particles having an average particle size between about 10 nm and about 40 μm and where silicon is the majority of the active material used in the electrode; and
wherein the electrolyte additive is selected from the group consisting of Phenyl vinylsulfonate (PVSA) (CAS: 1562-34-1); Pentafluorophenyl vinylsulfonate (CAS: 452905-58-7); benzyl vinyl sulfonate; phenoxy ethenesulfonate; [dimethyl(phenyl)silyl]ethenesulfonate (CAS: 62381-62-8); 3-phenylpropyl ethenesulfonate (CAS: 75391-23-0); (4-ethenylperoxysulfanyloxyphenyl) ethenesulfonate; Methyl ethenesulfonate (CAS: 1562-31-8); ethyl ethenesulfonate (CAS: 4058-26-8); propan-2-yl ethenesulfonate (CAS: 3851-91-0); propyl ethenesulfonate; 1-butyl ethenesulfonate (CAS: 3851-92-1); neopentyl ethenesulfonate (CAS: 75391-24-1); N-Hexyl vinyl sulfonate; Allyl ethenesulfonate (CAS: 7459-72-9); 2,2,2-trifluoroethyl ethenesulfonate; 2-cyanoethyl ethenesulfonate; Tricyclo[5.2.1.02,6]decane-4,8-dimethanol di(vinyl sulfonate); Glycerol tri(vinyl sulfonate), Trimethylolpropane tri(vinyl sulfonate), phenyl prop-1-ene-2-sulfonate; ethyl (E)-prop-1-ene-1-sulfonate; phenyl 2-(4-cyanophenyl)ethenesulfonate (CAS: 918341-27-2); phenyl prop-2-ene-1-sulfonate; [dimethyl(phenyl)silyl] prop-2-ene-1-sulfonate (CAS: 62381-58-2); 1O′-phenyl 1-O-prop-2-enyl prop-2-ene-1,1-disulfonate; phenyl 2-methylprop-2-ene-1-sulfonate; phenyl (E)-but-2-ene-1-sulfonate; phenyl 1-oxobut-3-ene-1-sulfonate; 2,3,4,5,6-Pentafluorophenyl 2-thiophenesulfonate (CAS: 663175-91-5), phenyl cyclopropanesulfonate; (2-fluorophenyl) cyclopropanesulfonate; (4-fluorophenyl) cyclopropanesulfonate; phenyl cyclopentanesulfonate; ethenyl ethanesulfonate; Vinyl benzenesulfonate; ethenyl phenylmethanesulfonate; prop-2-enyl phenylmethanesulfonate; Allyl p-toluenesulfonate (CAS 4873-09-0); 1,2,3,6-Tetrahydropyridin-4-yl trifluoromethanesulfonate (CAS: 1187848-82-3); Acetoxime o-(2,4,6-trimethylphenylsulfonate) (CAS: 81549-07-7); (4-Methylidenecyclohexyl)methyl methanesulfonate (CAS: 1228182-62-4); Propargyl p-toluenesulfonate (CAS: 6165-76-0); Propargyl benzenesulfonate (CAS: 6165-75-9); 3-Butynyl p-toluenesulfonate (CAS: 23418-85-1); 3-(1-Butynyl)-4-toluenesulfonate (CAS: 23418-85-1); Propargyl p-toluenesulfonate (CAS: 6165-76-0); Propargyl benzenesulfonate (CAS: 6165-75-9); 3-Butynyl p-toluenesulfonate (CAS: 23418-85-1); and 3-(1-Butynyl)-4-toluenesulfonate (CAS: 23418-85-1).