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US 12,015,169 B2Granted
Method of manufacturing separator
AssigneeUnicoh Specialty Chemicals Co., Ltd.
InventorsBang Cha Rang Song, Lyong Jin Lee, Yoo Chul Kim
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Abstract
In one embodiment of the present invention, it is provided a method of manufacturing a separator comprising: preparing expansion graphite; pulverizing the expansion graphite; mixing the expansion graphite and polymer; and forming a separator by molding the mixture.
Claims7
A method of manufacturing a separator comprising:
- preparing expansion graphite;
- pulverizing the expansion graphite;
- mixing the expansion graphite and polymer;
- and
- forming a separator by molding the mixture,
- wherein after the step of pulverizing the expansion graphite but before the step of mixing the pulverized expansion graphite and polymer, a step of high temperature heat treatment of the pulverized expansion graphite is performed, and
- wherein the S content of the heat treated pulverized expansion graphite is 0.84 wt % to 1.30 wt %.
4 more elements
Dependencies are inferred from the claim text.