US 12,080,848 B2
Electrolyte membrane for all-solid-state batteries, and method for manufacturing same
Jung-Pil Lee, Daejeon (KR); Eun-Bee Kim, Daejeon (KR); Ji-Hoon Ryu, Daejeon (KR); and Suk-Woo Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/267,583
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Mar. 18, 2020, PCT No. PCT/KR2020/003719
§ 371(c)(1), (2) Date Feb. 10, 2021,
PCT Pub. No. WO2020/190029, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 10-2019-0031408 (KR), filed on Mar. 19, 2019.
Prior Publication US 2021/0320332 A1, Oct. 14, 2021
Int. Cl. H01M 10/0565 (2010.01); H01M 10/0525 (2010.01)
CPC H01M 10/0565 (2013.01) [H01M 10/0525 (2013.01); H01M 2300/0082 (2013.01); H01M 2300/0094 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A solid electrolyte membrane comprising:
a support member, a lithium dendrite growth-inhibiting material and a first solid electrolyte material,
wherein the support member is a porous sheet including a plurality of pores that may be penetrated through by flowable materials, which is embedded in the solid electrolyte membrane, and is at least partially surface-coated with the lithium dendrite growth-inhibiting material;
the lithium dendrite growth-inhibiting material is provided in the form of (a1) a metal salt derived from a metal having lower ionization tendency as compared to lithium, (a2) a metal ion thereof, or both (a1) and (a2);
wherein the metal is Au, Pt, or both Au and Pt; and
the solid electrolyte membrane has an ion conductivity of 1.0×10−7 S/cm or more.