Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yongle Chen0
Weiqiang Wang0
Xiaoming Su0
Alex Cheng0
Fangbo He0
Date of Patent
August 24, 2021
Patent Application Number
20170208
Date Filed
February 8, 2017
Patent abstract
A method for preparing a lithium-ion battery separator is disclosed. The method comprises: cooling and shaping a liquid-phase stabilization system containing polyethylene, stretching to enlarge pores, extracting with a solvent, and heat-setting to obtain a lithium-ion battery separator, wherein the stretching includes pre-stretching and synchronous bidirectional stretching, and the pre-stretching is completed before the synchronous bidirectional stretching.
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