US 12,283,662 B2
All-solid-state battery comprising a pre-lithiated silicon negative electrode
Jeongbeom Lee, Daejeon (KR); Min Sang Song, Daejeon (KR); Ying Shirley Meng, San Diego, CA (US); and So-Yeon Ham, San Diego, CA (US)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR); and THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US)
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR); and THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US)
Filed on Sep. 20, 2023, as Appl. No. 18/470,746.
Claims priority of provisional application 63/518,274, filed on Aug. 8, 2023.
Prior Publication US 2025/0055024 A1, Feb. 13, 2025
Int. Cl. H01M 10/0562 (2010.01); H01M 4/134 (2010.01); H01M 4/62 (2006.01); H01M 10/058 (2010.01)
CPC H01M 10/0562 (2013.01) [H01M 4/134 (2013.01); H01M 4/622 (2013.01); H01M 10/058 (2013.01)] 10 Claims
 
1. An all-solid-state battery, comprising:
a negative electrode comprising a negative electrode active material layer, said negative electrode active material layer comprising silicon;
a positive electrode comprising lithium cobalt oxide (LCO), Li6PS5Cl and vapor grown carbon fibers;
a sulfide-containing solid electrolyte between the negative electrode and the positive electrode; and
an interfacial layer between the sulfide-containing solid electrolyte and the negative electrode active material layer,
wherein:
the negative electrode is pre-lithiated,
wherein the negative electrode active material layer contains 0.25 mol to 2 mol of lithium based on 1 mol of silicon,
wherein the sulfide-containing solid electrolyte is an argyrodite-based sulfide-containing solid electrolyte Li6PS5Cl, and
wherein the interfacial layer comprises Li2S.