Preparation method of water-based ceramic slurry for coating and battery diaphragm
A ceramic slurry, water-based technology, applied in the direction of non-aqueous electrolyte batteries, lithium batteries, battery pack parts, etc., to achieve the effect of preventing more fractures, convenient adjustment, and moderate viscosity
Active Publication Date: 2022-02-18
HEFEI XINGYUAN NEW ENERGY MATERIAL CO LTD
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Abstract
The invention discloses a preparation method of water-based ceramic slurry for coating, which comprises the steps of dissolving ceramic powder in water, uniformly stirring, sequentially adding a thickening agent and a dispersing agent, and uniformly stirring to obtain a first mixture; adding the first mixture into a sand mill for sanding, then adding the thickening agent again, and uniformly stirring to obtain a second mixture; sequentially adding an adhesive and a wetting agent into the second mixture, and uniformly stirring to obtain a third mixture; and performing foreign matter filtration and magnetic separation on the third mixture to obtain the ceramic slurry. In the slurry preparation process, the ceramic slurry with better heat resistance is obtained by adjusting the adding sequence of the thickening agent and the proportion of the adhesive. The invention also discloses a battery diaphragm. The battery diaphragm can reach different ventilation increments of 10-80sel/100ml, and meanwhile, the thermal shrinkage rate of the diaphragm is ensured to be less than 3%.
Application Domain
Li-accumulatorsCell component details
Technology Topic
Electrical batteryAdhesive +6
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PUM
Property | Measurement | Unit |
Size | 0.6 ~ 0.8 | mm |
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