High voltage electrolyte for lithium ion batteries
A lithium-ion battery and electrolyte technology, which is applied in secondary batteries, circuits, electrical components, etc., can solve the problems of poor solubility and high viscosity of fluorinated solvents, and achieve high-voltage resistance, good oxidation resistance and high-voltage resistance. Effect of wide electrochemical window
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Embodiment 1
[0028] Mix fluoroethylene carbonate, trifluoropropylene carbonate, hydrofluoroether, lithium hexafluorophosphate, lithium bisoxalate borate and propylene sulfite according to the ratio to obtain a high-pressure electrolyte. Among them, fluoroethylene carbonate: trifluoro The volume ratio of propylene carbonate: hydrofluoroether is 2:4:1, the molar concentration of lithium hexafluorophosphate is 0.8 mol / L, the molar concentration of lithium bisoxalate borate is 0.1 mol / L, and the addition amount of propylene sulfite is 1%.
[0029]
Embodiment 2
[0031] Mix fluoroethylene carbonate, trifluoropropylene carbonate, hydrofluoroether, lithium hexafluorophosphate, lithium bisoxalate borate and propylene sulfite according to the ratio to obtain a high-pressure electrolyte. Among them, fluoroethylene carbonate: trifluoro The volume ratio of propylene carbonate: hydrofluoroether is 5:10:4, the molar concentration of lithium hexafluorophosphate is 1 mol / L, the molar concentration of lithium bisoxalate borate is 0.15 mol / L, and the addition amount of propylene sulfite is 1.5%.
[0032]
Embodiment 3
[0034] Mix fluoroethylene carbonate, trifluoropropylene carbonate, hydrofluoroether, lithium hexafluorophosphate, lithium bisoxalate borate and propylene sulfite according to the ratio to obtain a high-pressure electrolyte. Among them, fluoroethylene carbonate: trifluoro The volume ratio of propylene carbonate: hydrofluoroether is 3:7:3, the molar concentration of lithium hexafluorophosphate is 1.2 mol / L, the molar concentration of lithium bisoxalate is 0.2 mol / L, and the addition amount of propylene sulfite is 2%.
[0035]
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