Method for manufacturing lithium ion battery by using gel diaphragm
A technology of lithium-ion batteries and manufacturing methods, which is applied in the field of lithium-ion battery manufacturing using gel diaphragms, can solve problems such as serious adhesion between diaphragms and cells, poor electrolyte infiltration, and safety of cells, and achieve overall temperature Good consistency, prevent lithium precipitation phenomenon, improve the effect of liquid retention
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Embodiment 1
[0071] S1. Making the positive electrode sheet: mix and stir lithium iron phosphate, conductive carbon black Super-P, and Solef5130 according to the ratio of 0.9:0.06:0.04 to obtain the positive electrode slurry, coat the positive electrode slurry on the aluminum foil and dry to obtain the electrode roll. Then obtain the positive electrode sheet by rolling, slitting, and die-cutting;
[0072] S2. Making the negative electrode sheet: mix and stir natural graphite, conductive carbon black Super-P, and styrene-butadiene rubber in a ratio of 0.92:0.02:0.06 to obtain the negative electrode slurry, coat the negative electrode slurry on the copper foil and dry to obtain the electrode roll , followed by rolling, slitting, and die-cutting to obtain the negative electrode sheet;
[0073] S3. Pole piece baking: place the positive pole piece and the negative pole piece under vacuum conditions for baking respectively. The baking temperature is 100°C, the vacuum degree is -1Mpa, the nitroge...
Embodiment 2
[0087] S1. Making the positive electrode sheet: mix and stir lithium iron phosphate, graphite conductive agent KS-15, and Solef5130 according to the ratio of 0.92:0.06:0.02 to obtain the positive electrode slurry, coat the positive electrode slurry on the aluminum foil and dry to obtain the electrode roll. Then obtain the positive electrode sheet by rolling, slitting, and die-cutting;
[0088] S2. Making negative pole pieces: mix and stir natural graphite, graphite conductive agent KS-15, and styrene-butadiene rubber in a ratio of 0.95:0.02:0.03 to obtain negative electrode slurry, and coat the negative electrode slurry on copper foil and dry to obtain pole coils , followed by rolling, slitting, and die-cutting to obtain the negative electrode sheet;
[0089] S3. Pole piece baking: place the positive pole piece and the negative pole piece under vacuum conditions for baking respectively. The baking temperature is 85°C, the vacuum degree is -1Mpa, the nitrogen replacement freque...
Embodiment 3
[0103] S1. Making the positive electrode sheet: Mix and stir nickel-cobalt lithium manganese oxide, graphite conductive agent KS-15, and Solef5130 according to the ratio of 0.96:0.03:0.01 to obtain the positive electrode slurry, coat the positive electrode slurry on the aluminum foil and dry it to obtain the electrode roll, and then obtain the positive electrode sheet by rolling, slitting, and die-cutting;
[0104] S2. Making the negative electrode sheet: Mix artificial graphite, graphite conductive agent KS-15, and styrene-butadiene rubber in a ratio of 0.96:0.01:0.03 to obtain the negative electrode slurry, and coat the negative electrode slurry on the copper foil and dry it to obtain the negative electrode slurry. roll, and then obtain the negative electrode sheet by rolling, slitting, and die-cutting;
[0105] S3. Pole piece baking: place the positive pole piece and the negative pole piece under vacuum conditions for baking respectively. The baking temperature is 85°C, the...
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