CPC H01M 50/461 (2021.01) [H01M 4/622 (2013.01); H01M 10/0525 (2013.01); H01M 50/417 (2021.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); H01M 50/411 (2021.01); H01M 50/426 (2021.01); H01M 50/431 (2021.01); H01M 50/437 (2021.01); H01M 50/449 (2021.01)] | 8 Claims |
1. A separator comprising:
a porous polymer substrate having a plurality of pores;
a separator base formed on at least one surface of the porous polymer substrate, said separator base comprising a porous coating layer comprising a plurality of first inorganic particles and a binder polymer positioned on a whole or a part of a surface of the first inorganic particles to connect and fix the first inorganic particles with each other; and
an adhesive layer formed on at least one surface of the separator base, said adhesive layer comprising a plurality of second inorganic particles and adhesive resin particles,
wherein a weight ratio of the second inorganic particles to the adhesive resin particles is 10:90-50:50, and
a diameter of the adhesive resin particles is 1.2-3.0 times a diameter of the second inorganic particles,
wherein the second inorganic particles have an average particle diameter of 250 nm to 500 nm.
|