Back to results
US 12,671,114 B2Granted
Silicon-based energy storage devices with LiPO2F2 salt-containing electrolyte formulations
AssigneeEnevate Corporation
InventorsLiwen Ji, Benjamin Yong Park
Life of this patent
Estimating the term…
Abstract
Electrolytes and electrolyte additives for energy storage devices comprising lithium difluorophosphate (LiPO2F2) and an electrolyte additive are disclosed. The energy storage device comprises 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, a lithium-containing salt comprising LiPO2F2, and at least one electrolyte additive compound.
Claims12
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;
- a lithium-containing salt comprising lithium difluorophosphate (LiPO2F2);
- and
- at least one electrolyte additive;
- where said at least one electrolyte additive is selected from the group consisting of allyl cyclohexyl carbonate;
- N-(allyloxycarbonyloxy)succinimide;
- 2,2,3,3,3-pentafluoropropyl 2,2,2-trifluoroethyl carbonate;
- ethyl propargyl carbonate;
- 3-trimethylsiloxy-1-propyne;
- glycidyl propargyl ether;
- 1-fluoroethyl propagyl carbonate;
- 1-(prop-2-yn-1-yl)-2,5-dihydro-1H-pyrrole-2,5-dione;
- 2,2-difluoroethyl propargyl carbonate;
- 2,2,3,3,3-pentafluoropropyl propargyl carbonate;
- vinylboronic acid MIDA ester;
- isopropenylboronic acid MIDA ester;
- cyclopropylboronic acid MIDA ester;
- 2-cyclobutyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione;
- 2-cyclopentyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione;
- 2-cyclohexyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione;
- 2-ethynyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione;
- 2-butyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione;
- isopropenylboronic anhydride pyridine complex;
- trivinylboroxin;
- 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;
- allylboronic acid pinacol ester;
- 2-vinyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane;
- 2-isopropenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane;
- cyclopropylboronic acid pinacol ester;
- cyclohexylboronic acid pinacol ester;
- pyridine-3-boronic acid 1,3-propanediol ester;
- 2,5-difluoropyridine-4-boronic acid, pinacol ester;
- 2,6-difluoropyridine-3,5-diboronic acid, pinacol ester;
- tris(2H-hexafluoroisopropyl) borate;
- boric acid tris-(2-oxo-[1,3]dioxolan4-ylmethyl) ester;
- tris(prop-2-enyl) borate;
- triallyl phosphite;
- diallyl hydrogen phosphate;
- dimethyl vinyl phosphate;
- bis(ethenyl) phosphate;
- tris(ethenyl) phosphate;
- bis(ethenyl) ethyl phosphate;
- tris(2,3-epoxypropyl) isocyanurate;
- 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione;
- tris[2-(acryloyloxy)ethyl]isocyanurate;
- vinyltrisopropenoxysilane;
- vinyl tris(trimethylsiloxy)silane;
- 1,5-diethenyl-3-[(ethenyldimethylsilyl)oxy]-1,1,3,5,5-pentamethylpentanetrisiloxane;
- and 4-(tert-butyldimethylsilyloxy)-1-butyne.
51 more elements
A method of forming an energy storage device, the method comprising:
- forming an energy storage device comprising a cathode, an electrolyte, and a Si-based anode, wherein said electrolyte contains a lithium-containing salt comprising
- lithium difluorophosphate (LiPO2F2);
- and
- at least one electrolyte additive;
- wherein said one or both of said cathode and said anode is formed using, at least, the following steps:
- an electrode material is mixed to create a slurry;
- said slurry is coated on metal foil;
- and
- the coated metal foil is dried;
- and
- where said at least one electrolyte additive is selected from the group consisting of allyl cyclohexyl carbonate;
- N-(allyloxycarbonyloxy)succinimide;
- 2,2,3,3,3-pentafluoropropyl 2,2,2-trifluoroethyl carbonate;
- ethyl propargyl carbonate;
- 3-trimethylsiloxy-1-propyne;
- glycidyl propargyl ether;
- 1-fluoroethyl propagyl carbonate;
- 1-(prop-2-yn-1-yl)-2,5-dihydro-1H-pyrrole-2,5-dione;
- 2,2-difluoroethyl propargyl carbonate;
- 2,2,3,3,3-pentafluoropropyl propargyl carbonate;
- vinylboronic acid MIDA ester;
- isopropenylboronic acid MIDA ester;
- cyclopropylboronic acid MIDA ester;
- 2-cyclobutyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione;
- 2-cyclopentyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione;
- 2-cyclohexyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione;
- 2-ethynyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione;
- 2-butyl-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione;
- isopropenylboronic anhydride pyridine complex;
- trivinylboroxin;
- 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;
- allylboronic acid pinacol ester;
- 2-vinyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane;
- 2-isopropenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane;
- cyclopropylboronic acid pinacol ester;
- cyclohexylboronic acid pinacol ester;
- pyridine-3-boronic acid 1,3-propanediol ester;
- 2,5-difluoropyridine-4-boronic acid, pinacol ester;
- 2,6-difluoropyridine-3,5-diboronic acid, pinacol ester;
- tris(2H-hexafluoroisopropyl) borate;
- boric acid tris-(2-oxo-[1,3]dioxolan4-ylmethyl) ester;
- tris(prop-2-enyl) borate;
- triallyl phosphite;
- diallyl hydrogen phosphate;
- dimethyl vinyl phosphate;
- bis(ethenyl) phosphate;
- tris(ethenyl) phosphate;
- bis(ethenyl) ethyl phosphate;
- tris(2,3-epoxypropyl) isocyanurate;
- 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione;
- tris[2-(acryloyloxy)ethyl]isocyanurate;
- vinyltrisopropenoxysilane;
- vinyl tris(trimethylsiloxy) silane;
- 1,5-diethenyl-3-[(ethenyldimethylsilyl)oxy]-1,1,3,5,5-pentamethylpentanetrisiloxane;
- and 4-(tert-butyldimethylsilyloxy)-1-butyne.
55 more elements
Dependencies are inferred from the claim text.