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AssigneeHuizhou Liwinon Electronic Technology Co., Ltd.
InventorsXulun Lai, Jie Chen, Zaibo Li, Haibiao Xiang
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The present invention relates to the technical field of separators, and in particular to a composite oil-based separator and a preparation method therefor. The composite oil-based separator comprises a base film and a moisture retention coating applied on at least one side surface of the base film, wherein the moisture retention coating comprises an inorganic filler, a bonding polymer, and a moisture retention polymer. The composite oil based separator in the present invention is provided with the moisture retention coating, so that a layer structure having moisture can be formed on the surface of the base film, thereby reducing the electrostatic intensity of the composite oil based separator; thus, when the separator is applied to a battery cell and wound, wrinkling would not occur.
A composite oil-based separator, comprising a base membrane and a moisturizing coating applied onto at least one side surface of the base membrane, wherein the moisturizing coating comprises an inorganic filler, an adhesive polymer and a moisturizing polymer;
A method for preparing a composite oil-based separator, comprising the steps of:
A secondary battery, comprising the composite oil-based separator according to.
Dependencies are inferred from the claim text.