A kind of graphene high-energy lithium battery composite positive electrode slurry and preparation method thereof
A composite cathode and graphene technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of poor cycle performance and stability, easy heating during use, and reduced energy storage of lithium batteries, and achieve high capacity stability, The effect of high dispersion and reduction of pole piece resistance
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Embodiment 1
[0031] A graphene high-energy lithium battery composite cathode slurry, which is prepared by mixing an active material, a dispersant, a binder, a conductive agent, and a solvent at a weight ratio of 6:2:1:1.5:15.
[0032] The active material is composed of the following raw materials in parts by weight: 10 parts of modified lithium iron phosphate, 5 parts of lithium cobaltate, and 6 parts of lithium nickelate.
[0033]The dispersant is composed of the following raw materials in parts by weight: 3 parts of sodium polyacrylate, 2 parts of fatty alcohol polyoxyethylene ether, and 0.5 part of sodium lignosulfonate.
[0034] The binder is composed of the following raw materials in parts by weight: 1 part of gelatin, 3 parts of modified polyacrylate.
[0035] The conductive agent is composed of the following raw materials in parts by weight: 0.5 parts of cobalt disulfide, 10 parts of graphene, 2.5 parts of nano-carbon fibers, 2.5 parts of acetylene black, and 20 parts of butyrolacto...
Embodiment 2
[0046] A graphene high-energy lithium battery composite cathode slurry is prepared by mixing active materials, dispersants, binders, conductive agents, and solvents according to a weight ratio of 9:4:3:2.5:20.
[0047] The active material is composed of the following raw materials in parts by weight: 20 parts of modified lithium iron phosphate, 8 parts of lithium cobaltate, and 9 parts of lithium nickelate.
[0048] The dispersant is composed of the following raw materials in parts by weight: 7 parts of sodium polyacrylate, 4 parts of fatty alcohol polyoxyethylene ether, and 1.5 parts of sodium lignosulfonate.
[0049] The binder is composed of the following raw materials in parts by weight: 2 parts of gelatin, 5 parts of modified polyacrylate.
[0050] The conductive agent is composed of the following raw materials in parts by weight: 1.2 parts of cobalt disulfide, 15 parts of graphene, 4 parts of nano-carbon fibers, 3.5 parts of acetylene black, and 30 parts of butyrolactone...
Embodiment 3
[0061] A graphene high-energy lithium battery composite cathode slurry, which is prepared by mixing an active material, a dispersant, a binder, a conductive agent, and a solvent at a weight ratio of 7.5:3:2:2:17.5.
[0062] The active material is composed of the following raw materials in parts by weight: 20 parts of modified lithium iron phosphate, 8 parts of lithium cobaltate, and 9 parts of lithium nickelate.
[0063] The dispersant is composed of the following raw materials in parts by weight: 7 parts of sodium polyacrylate, 4 parts of fatty alcohol polyoxyethylene ether, and 1.5 parts of sodium lignosulfonate.
[0064] The binder is composed of the following raw materials in parts by weight: 2 parts of gelatin, 5 parts of modified polyacrylate.
[0065] The conductive agent is composed of the following raw materials in parts by weight: 1.2 parts of cobalt disulfide, 15 parts of graphene, 4 parts of nano-carbon fibers, 3.5 parts of acetylene black, and 30 parts of butyrola...
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