NANO-COMPOSITE POLYMER SEPARATOR WITH ENHANCED SAFETY PERFORMANCE AND PREPARATION METHOD THEREOF
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United States of America Patent
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Issued Date -
Sep 28, 2023
app pub date -
Jul 5, 2021
filing date -
Jul 15, 2020
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Abstract
A method for manufacturing a porous membrane suitable for use as a separator of a lithium ion battery, comprising the following steps: 1) compounding a polymer and hydrophobic filler by dry mixing; 2) extruding the compounded mixture to obtain a cast film and 3) stretching the cast film to obtain the porous membrane. A porous membrane suitable for use as a separator of a lithium ion battery, a separator for a lithium ion battery, a lithium ion battery, and a device are also provided.
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