US 12,394,866 B2
Composite separator and electrochemical device using the same
Sang Yoon Ji, Daejeon (KR)
Assigned to SK Innovation Co., Ltd., Seoul (KR); and SK ie technology Co., Ltd., Seoul (KR)
Filed by SK Innovation Co., Ltd., Seoul (KR); and SK ie technology Co., Ltd., Seoul (KR)
Filed on Mar. 22, 2022, as Appl. No. 17/700,568.
Claims priority of application No. 10-2021-0037254 (KR), filed on Mar. 23, 2021.
Prior Publication US 2022/0311096 A1, Sep. 29, 2022
Int. Cl. H01M 50/454 (2021.01); H01M 50/403 (2021.01); H01M 50/417 (2021.01); H01M 50/434 (2021.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); H01M 50/457 (2021.01); H01M 50/489 (2021.01)
CPC H01M 50/454 (2021.01) [H01M 50/403 (2021.01); H01M 50/417 (2021.01); H01M 50/434 (2021.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); H01M 50/457 (2021.01); H01M 50/489 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A composite separator comprising:
a porous substrate; and
a one-dimensional inorganic material layer formed of a one-dimensional inorganic material on one or both surfaces of the porous substrate, and
an inorganic particle layer including particles including inorganic particles and an organic binder; or a heterogeneous material-based inorganic composite layer of a different dimension including particles including inorganic particles and a one-dimensional inorganic material, on an upper surface of the one-dimensional inorganic material layer,
wherein the one-dimensional inorganic material layer comprises no organic binder.