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US 2020/0266406 A1Published application
Separators, electrochemical devices comprising the separator, and methods for making the separator
AssigneeShanghai Energy New Materials Technology Co., Ltd.
InventorsAlex CHENG, Yongle CHEN, Jinzhen BAO, Fangbo HE, Weiqiang WANG
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Abstract
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.
Claims20
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.
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A method for making a separator, comprising:
- preparing a coating slurry comprising polybenzimidazoles having a weight average molecular weight ranging from 5×103 to 1×106 and at least one solvent;
- applying the coating slurry on at least one side of a porous base membrane to form a wet coating layer;
- and
- removing the at least one solvent from the wet coating layer.
1 more element
Dependencies are inferred from the claim text.