Patent ID: 11901579
Assignee: JIANGSU HORIZON NEW ENERGY TECH CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A multilayer microporous separator, comprising:
a PVDF layer, and a PE-PVDF porous substrate located on a surface of the PVDF layer;
wherein
the PE-PVDF porous substrate comprises a PVDF finger-like pore layer and a PE microporous layer, the PVDF finger-like pore layer and the PE microporous layer are successively stacked on the surface of the PVDF layer; finger-like through holes with a pore size of 100-150 nm are distributed in the PVDF finger-like pore layer;
an interpenetrating network structure with a pore size of 50-100 nm is distributed on an interface between the PVDF finger-like pore layer and the PE microporous layer; and
micropores with a pore size of 20-50 nm are distributed in the PE microporous layer.