Electrolyte and lithium ion battery
A lithium-ion battery and electrolyte technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of easy decomposition of cyclic sulfates, and achieve the advantages of inhibiting surface activity, improving stability, and reducing resistance. Effect
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[0036] Example 1
[0037] In the first step, in a nitrogen glove box with a moisture content of less than 5ppm at room temperature, ethylene carbonate (EC), propylene carbonate (PC), diethyl carbonate (DEC) and propyl acetate (PA) are combined in a mass ratio 3:1:4:2 is mixed to obtain the first mixed liquid;
[0038] In the second step, 1mol / L lithium hexafluorophosphate (LiPF 6 ), 0.1mol / L lithium bisfluorosulfonimide (LiFSI), 0.1mol / L lithium tetrafluorooxalate (LiPF 4 C 2 O 4 ), mix uniformly so that the molar concentration of lithium hexafluorophosphate in the electrolyte is 1 mol / L, and the molar concentration of lithium bisfluorosulfonimide and lithium tetrafluorooxalate phosphate in the electrolyte are both 0.1 mol / L. Two mixed liquid;
[0039] The third step is to add 3% of 1,3-propane sultone (PS), 2% of succinonitrile (SN), and 1% of hexamethylene dichloride to the second mixed solution. Nitrile (ADN), 3% fluoroethylene carbonate (FEC), 2% 1,1,2,2-tetrafluoroethyl-2,2,3,...
Example Embodiment
[0049] Example 2
[0050] In the first step, in a nitrogen glove box with moisture less than 5ppm at room temperature, ethylene carbonate (EC), propylene carbonate (PC), diethyl carbonate (DEC), ethyl propionate (EP) and acetic acid Propyl ester (PA) is mixed at a mass ratio of 3:1:4:1:1 to obtain a first mixed liquid;
[0051] The other steps are the same as in Example 1.
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