Separator and a method for manufacturing thereof
AssigneeBenQ Materials Corporation
InventorsWan-Ting Lo, Yi-Ting Lo, Meng-Chia Cheng
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Abstract
A separator and a method for manufacturing thereof are disclosed. The separator comprises an enhanced porous polyolefin substrate and an inorganic layer, wherein the enhanced porous polyolefin substrate is obtained by pre-strengthening a porous polyolefin substrate, and the inorganic layer comprises a plurality of inorganic particles and a binder and coated on at least one surface of the enhanced porous polyolefin substrate, and the pre-strengthening treatment comprises sequentially applying a titanium alkoxide solution and an alcohol solution. The separator of the present invention has improved tensile strength and good compression resistance.
Claims20
A separator, comprising:
- an enhanced porous polyolefin substrate, wherein the enhanced porous polyolefin substrate is obtained by pre-strengthening a porous polyolefin substrate;
- and
- an inorganic layer comprising a plurality of inorganic particles and a binder coated on at least one surface of the enhanced porous polyolefin substrate;
- wherein the enhanced porous polyolefin substrate is obtained by sequentially applying a 0.1 wt % to 3 wt % titanium alkoxide solution and a 30 wt % to 70 wt % alcohol solution to the porous polyolefin substrate.
A method for manufacturing a separator, comprising the steps of:
- providing a porous polyolefin substrate;
- pre-strengthening the porous polyolefin substrate to form an enhanced porous polyolefin substrate, wherein the step of pre-strengthening comprises sequentially applying a 0.1 wt % to 3 wt % titanium alkoxide solution and a 30 wt % to 70 wt % alcohol solution to the porous polyolefin substrate;
- and
- coating an inorganic layer comprising a plurality of inorganic particles and a binder on at least one surface of the enhanced porous polyolefin substrate.
Dependencies are inferred from the claim text.