US 11,888,151 B2
Method of preparing positive electrode
Chang Wan Koo, Daejeon (KR); Ki Tae Kim, Daejeon (KR); and Sang Hoon Choy, Daejeon (KR)
Assigned to LG Energy Solution, Ltd.
Appl. No. 16/980,037
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Mar. 14, 2019, PCT No. PCT/KR2019/002985
§ 371(c)(1), (2) Date Sep. 11, 2020,
PCT Pub. No. WO2019/177402, PCT Pub. Date Sep. 19, 2019.
Claims priority of application No. 10-2018-0029934 (KR), filed on Mar. 14, 2018.
Prior Publication US 2021/0013487 A1, Jan. 14, 2021
Int. Cl. H01M 4/04 (2006.01); H01M 4/139 (2010.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 10/056 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/139 (2013.01) [H01M 4/043 (2013.01); H01M 4/0404 (2013.01); H01M 4/362 (2013.01); H01M 4/62 (2013.01); H01M 10/056 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0082 (2013.01); H01M 2300/0091 (2013.01)] 9 Claims
 
1. A method of preparing a positive electrode, the method comprising:
mixing a lithium salt and a polymer in a dry atmosphere to form a solid electrolyte which is in a solid state;
forming a dry mixture by stirring after adding a conductive agent and a positive electrode active material to the solid electrolyte in a dry atmosphere; and
pressing after coating a current collector with the dry mixture,
wherein the dry mixture comprises granules formed by coagulation of the solid electrolyte, the positive electrode active material, and the conductive agent.