公开(公告)号：US20240145867A1

公开(公告)日：2024-05-02

申请号：US18097534

申请日：2023-01-17

Applicant: NAN YA PLASTICS CORPORATION

Inventor： TE-CHAO LIAO ,  CHUN-CHE TSAO ,  CHENG-HUNG CHEN ,  LI-TING WANG

IPC: H01M50/451 ,  H01M10/052 ,  H01M50/403 ,  H01M50/417 ,  H01M50/457 ,  H01M50/491

CPC classification number: H01M50/451 ,  H01M10/052 ,  H01M50/403 ,  H01M50/417 ,  H01M50/457 ,  H01M50/491

Abstract: A separator for a lithium battery and a method for manufacturing the same are provided. The separator includes a substrate layer and a coating layer. The substrate layer is a polyolefin porous film and has a substrate thickness ranging from 10 to 30 micrometers. The coating layer is coated on the substrate layer, and has a coating layer thickness ranging from 1 to 5 micrometers. The coating layer includes a heat-resistant resin material and a plurality of inorganic ceramic particles glued in the heat-resistant resin material. The heat-resistant resin material has a melting point (Tm) or a glass transition temperature (Tg) of not less than 150° C. An average particle size of the inorganic ceramic particles is 10% to 40% of the coating layer thickness of the coating layer. The inorganic ceramic particles are stacked in the coating layer with a height of at least three layers.