US 12,148,879 B2
Method of manufacturing positive electrode for all-solid-state batteries and positive electrode for all-solid-state batteries manufactured using the same
Hye Ri Jung, Daejeon (KR); Lak Young Choi, Daejeon (KR); and Hyea Eun Han, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/437,620
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Apr. 28, 2020, PCT No. PCT/KR2020/005573
§ 371(c)(1), (2) Date Sep. 9, 2021,
PCT Pub. No. WO2020/226322, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. 10-2019-0053693 (KR), filed on May 8, 2019.
Prior Publication US 2022/0190381 A1, Jun. 16, 2022
Int. Cl. H01M 10/0562 (2010.01); H01M 4/04 (2006.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01)
CPC H01M 10/0562 (2013.01) [H01M 4/0404 (2013.01); H01M 4/621 (2013.01); H01M 4/625 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0065 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of manufacturing a positive electrode for sulfide-based all-solid-state batteries, comprising:
preparing a slurry, wherein the slurry is prepared by:
a) mixing a positive electrode active material and a solid electrolyte in a first dry state;
b) adding a conducting agent to the mixture of the step a) and mixing in a second dry state;
c) adding a first portion of a binder and a solvent to the mixture of the step b) and mixing in a first wet state, and
d) adding a liquid in which an additional conducting agent and a second portion of the binder are pre-dispersed to the wet mixture of the step c) and mixing in a second wet state,
coating the slurry on a current collector, and then drying.