US 12,308,429 B2
Lithium secondary battery
Byoung Gu Lee, Daejeon (KR); Duk Hyun Ryu, Daejeon (KR); Kwan Hee Lee, Daejeon (KR); Myung An Lee, Daejeon (KR); and Sue Jin Kim, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed on Oct. 7, 2022, as Appl. No. 18/045,096.
Claims priority of application No. 10-2021-0136711 (KR), filed on Oct. 14, 2021; and application No. 10-2022-0121172 (KR), filed on Sep. 23, 2022.
Prior Publication US 2023/0117468 A1, Apr. 20, 2023
Int. Cl. H01M 4/525 (2010.01); C01G 53/50 (2025.01); H01M 4/131 (2010.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 4/36 (2006.01); H01M 4/48 (2010.01); H01M 4/505 (2010.01); H01M 4/587 (2010.01); H01M 10/052 (2010.01); H01M 10/0587 (2010.01); H01M 50/107 (2021.01); H01M 50/533 (2021.01); H01M 50/586 (2021.01); H01M 4/02 (2006.01)
CPC H01M 4/525 (2013.01) [C01G 53/50 (2013.01); H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/364 (2013.01); H01M 4/483 (2013.01); H01M 4/505 (2013.01); H01M 4/587 (2013.01); H01M 10/052 (2013.01); H01M 10/0587 (2013.01); H01M 50/107 (2021.01); H01M 50/533 (2021.01); H01M 50/586 (2021.01); C01P 2002/50 (2013.01); C01P 2004/03 (2013.01); C01P 2004/52 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A lithium secondary battery comprising:
an electrode assembly in which a positive electrode plate, a negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate are wound in one direction;
a battery can in which the electrode assembly is accommodated; and
a sealing body which seals an open end of the battery can,
wherein the positive electrode plate comprises positive electrode active material which comprises single particles, quasi-single particles, or a combination thereof,
the positive electrode active material has Dmin of 1.0 μm or more,
the positive electrode active material has Dmax of 12 μm to 17 μm,
the lithium secondary battery is cylindrical battery having a ratio of form factor of 0.4 or more, wherein the ratio of form factor is a value obtained by dividing a diameter of the cylindrical battery by a height of the cylindrical battery, and
the positive electrode active material comprises a lithium nickel-based oxide that comprises 80 mol % or more of Ni on a basis of a total number of moles of transition metal in the lithium nickel-based oxide.