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US 2018/0294461 A1Published application
Composite film, method of preparing the same and lithium battery having the same
AssigneeBYD Company Limited
InventorsDALI FENG, WEI SONG, JIALING HU, LINA JIN, JUN SHAN, LONG HE
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Abstract
The present disclosure provides a composite film, a method of preparing the same and a lithium battery having the same. The composite film includes a porous separator and a fiber layer disposed on a surface of the porous separator and containing polyetherimide.
Claims20
A composite film, comprising a porous separator, and a fiber layer disposed on a surface of the porous separator and containing polyetherimide.
A method of preparing a composite film, comprising:
- S1) providing a porous separator;
- S2) providing a spinning solution including a solvent, and a spinning polymer dissolved in the solvent and including polyetherimide;
- and
- S3) preparing a fiber layer on the porous separator by using the spinning solution, and drying the fiber layer to obtain the composite film comprising the porous separator and the fiber layer disposed on the porous separator.
1 more element
Dependencies are inferred from the claim text.