COMPOSITE SEPARATOR, METHOD FOR MAKING THE SAME, AND LITHIUM ION BATTERY USING THE SAME
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Oct 11, 2017
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Apr 13, 2015
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A composite separator comprises a non-woven fabric-polymer composite separator substrate and a composite gel combined with the non-woven fabric-polymer composite separator substrate. The composite gel comprises a gel polymer and a nano-barium sulfate whose surface is modified with lithium carboxylate group. The nano-barium sulfate is dispersed to the gel polymer. The non-woven fabric-polymer composite separator substrate comprises a non-woven fabric and a soluble heat-resistant polymer. A method for making the composite separator and a lithium ion battery comprising the composite separator are also disclosed in the present disclosure.
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