US 12,224,439 B2
Boron-containing chemicals as cathode additives, Si anode additives, electrolyte additives or separator modifiers for Li-ion batteries
Liwen Ji, Irvine, CA (US); Benjamin Park, Irvine, CA (US); and Hong Zhao, Irvine, CA (US)
Assigned to Enevate Corporation, Irvine, CA (US)
Filed by Enevate Corporation, Irvine, CA (US)
Filed on Oct. 22, 2021, as Appl. No. 17/508,514.
Claims priority of provisional application 63/106,731, filed on Oct. 28, 2020.
Prior Publication US 2022/0131148 A1, Apr. 28, 2022
Int. Cl. H01M 4/58 (2010.01); H01M 4/38 (2006.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/5825 (2013.01) [H01M 4/386 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01)] 18 Claims
OG exemplary drawing
 
9. 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 a boron-containing compound; and
wherein the boron-containing compound comprises one or more of: Cyclopropylboronic acid MIDA ester (CAS 1104637-36-6); 2-cyclobutyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione (CAS: 1104637-37-7); 2-cyclopentyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione (CAS: 117311-84-9); Phenylboronic acid trimeric anhydride; Thiophene-2-boronic acid pinacol ester; 4-Methylthiophene-3-boronic acid pinacol ester; 3-(5,5-Dimethyl-1,3,2-dioxaborinan-2-yl) pyridine; 3-Cyano-1-propylboronic acid pinacol ester; Cyclopropylboronic acid pinacol ester; Cyclohexylboronic acid pinacol ester; Pyridine-3-boronic acid 1,3-propanediol ester; 2,5-Difluoropyridine-4-boronic acid, pinacol estser (CAS: 1622217-35-9); or 2,6-Difluoropyridine-3,5-diboronic acid, pinacol ester (CAS: 1218789-90-2).