Lithium nickel cobalt manganate/lithium nickel cobalt aluminate battery and functional diaphragm for lithium nickel cobalt manganite/lithium nickel cobalt aluminate battery as well as production technology of diaphragm
A nickel-cobalt lithium aluminate and functional technology, which is applied in the direction of batteries, secondary batteries, electrochemical generators, etc., can solve the problems of not being able to effectively inhibit dissolution and the impact of battery cycle performance at the same time, and achieve improved cycle performance and improved Productivity and electrical properties, and the effect of preventing penetration through the separator
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Embodiment 1
[0035] A functional separator for a nickel-cobalt-manganese / nickel-cobalt-aluminate lithium battery in this embodiment comprises a porous film substrate and a functional coating coated on the surface of the substrate, the coating of the functional coating includes a filler, Adhesives, thickeners, dispersants and stabilizers, wherein the stabilizer is triethylenetetraminehexaacetic acid, its addition is 0.5% of the total weight of the functional coating, and the filler is aluminum oxide, Its addition is 84% of the total weight of the functional coating, and the adhesive is styrene-butadiene latex, and its addition is 10% of the total weight of the functional coating. The thickener is sodium carboxymethylcellulose, and its addition is 5% of the total weight of the functional coating; the dispersant is polyethylene glycol, and its addition is 0.5% of the total weight of the functional coating . A nickel-cobalt-lithium-manganese-oxide battery in this embodiment includes the abo...
Embodiment 2
[0038] A functional diaphragm for a nickel-cobalt-manganese / nickel-cobalt-aluminate lithium battery of the present embodiment comprises a porous film substrate (its structure is as follows: figure 1 shown) and functional coatings coated on the surface of the substrate (such as figure 2 shown), the porous membrane substrate is selected from polyethylene (its structure is as follows figure 1 Shown), its thickness: 5μm; porosity: 30%; tortuosity: 12; pore diameter: 10 ~ 50nm. The coating of described functional coating comprises filler, bonding agent, thickener, dispersant and stabilizer, and wherein said stabilizer is diethylene triamine pentaacetic acid, and the content of stabilizer is functional coating gross weight 20% of. The filler is silicon oxide, and its addition is 40% of the total weight of the functional coating; the adhesive is phenylacrylic acid, and its addition is 20% of the total weight of the functional coating. The thickener is polyethylene oxide, and the ...
Embodiment 3
[0042] A functional separator for a nickel-cobalt-manganese / nickel-cobalt-aluminate lithium battery in this embodiment includes a porous membrane base material and a functional coating coated on the surface of the base material, and the porous membrane base material is selected from polyparaphenylene Ethylene glycol diformate, thickness: 70μm; porosity: 80%; air permeability: 100s / 100cc; tortuosity: 50; pore diameter: 400-500nm. The coating of the functional coating includes a filler, an adhesive, a thickener, a dispersant and a stabilizer, wherein the stabilizer is 1,3-diamine-2-hydroxypropane-N,N,N' , N'-tetraacetic acid, the content of the stabilizer is 0.1% of the total weight of the functional coating. The filler is clay, and its addition is 95% of the total weight of the functional coating; the adhesive is a combination of polyacrylamide and urethane, and its addition is the total weight of the functional coating 3%. The thickener is a combination of polyethylene oxide...
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