SEPARATORS, ELECTROCHEMICAL DEVICES COMPRISING THE SEPARATOR, AND METHODS FOR MAKING THE SEPARATOR
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United States of America Patent
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Aug 20, 2020
app pub date -
Oct 8, 2018
filing date -
Oct 9, 2017
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Disclosed are a separator for an electrochemical device, comprising a porous base membrane and a coating layer being formed on at least one side of the porous base membrane, wherein the coating layer comprises polybenzimidazoles having a weight average molecular weight ranging from 5×103 to 1×106; as well as an electrochemical device including the separator and a method for making the separator.
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