US 12,261,264 B2
Electrolyte membrane for all-solid-state battery and all-solid-state battery including the same
Jung-Pil Lee, Daejeon (KR); and Sung-Joong Kang, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/630,010
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Nov. 13, 2020, PCT No. PCT/KR2020/016036
§ 371(c)(1), (2) Date Jan. 25, 2022,
PCT Pub. No. WO2021/096313, PCT Pub. Date May 20, 2021.
Claims priority of application No. 10-2019-0147024 (KR), filed on Nov. 15, 2019.
Prior Publication US 2022/0263115 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/056 (2010.01); H01M 10/052 (2010.01); H01M 10/0525 (2010.01); H01M 10/42 (2006.01)
CPC H01M 10/056 (2013.01) [H01M 10/052 (2013.01); H01M 10/0525 (2013.01); H01M 10/4235 (2013.01); H01M 2300/0082 (2013.01); H01M 2300/0091 (2013.01); H01M 2300/0094 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A solid electrolyte membrane for an all-solid-state battery, the solid electrolyte membrane having an ion conductivity of 1×10−7 S/cm or more at 20-30° C., and comprising a mixture of a polymer material (A) and a solid electrolyte material (B),
wherein the polymer material (A) has an ion conductivity of 9×10−8 S/cm or less at 20-30° C.,
the solid electrolyte material (B) comprises a polymer electrolyte (C) containing a lithium salt (C1) mixed with a polymer resin (C2),
the polymer resin (C2) is a block copolymer comprising a first segment and a second segment different from the first segment,
the first segment comprises a first repeating unit having a polar group, and
a weight fraction of the first segment in the polymer resin (C2) is 70-99 wt %.