US 12,224,424 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., Seoul (KR)
Filed by LG Energy Solution, Ltd., Seoul (KR)
Filed on Nov. 29, 2023, as Appl. No. 18/522,966.
Application 18/522,966 is a continuation of application No. 16/980,037, granted, now 11,888,151, previously published as PCT/KR2019/002985, filed on Mar. 14, 2019.
Claims priority of application No. 10-2018-0029934 (KR), filed on Mar. 14, 2018.
Prior Publication US 2024/0097107 A1, Mar. 21, 2024
Int. Cl. H01M 4/02 (2006.01); 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)
CPC H01M 4/139 (2013.01) [H01M 4/0404 (2013.01); H01M 4/043 (2013.01); H01M 4/362 (2013.01); H01M 4/62 (2013.01); H01M 10/0525 (2013.01); H01M 10/056 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0082 (2013.01); H01M 2300/0091 (2013.01)] 15 Claims
 
1. A dry positive electrode comprising:
a positive electrode collector and
a positive electrode active material layer disposed on the positive electrode collector and comprising a dry mixture,
wherein the dry positive electrode has a porosity of 3.5% to 18% and a thickness variation of 4 μm to 8 μm.