US 12,155,029 B2
Material, negative electrode comprising same and methods for manufacturing same
Ye Ri Kim, Daejeon (KR); Sang Wook Woo, Daejeon (KR); and Oh Byong Chae, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/255,453
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Jan. 20, 2020, PCT No. PCT/KR2020/000969
§ 371(c)(1), (2) Date Dec. 23, 2020,
PCT Pub. No. WO2020/153690, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 10-2019-0007734 (KR), filed on Jan. 21, 2019.
Prior Publication US 2021/0273212 A1, Sep. 2, 2021
Int. Cl. H01M 10/0525 (2010.01); B22F 1/102 (2022.01); B22F 9/04 (2006.01); H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/583 (2010.01); H01M 10/0567 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01)
CPC H01M 10/0525 (2013.01) [B22F 1/102 (2022.01); B22F 9/04 (2013.01); H01M 4/0404 (2013.01); H01M 4/364 (2013.01); H01M 4/366 (2013.01); H01M 4/382 (2013.01); H01M 4/583 (2013.01); H01M 10/0567 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2300/0028 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for manufacturing a lithium composite negative electrode active material, the method comprising:
a first step of preparing a pellet by extruding a mixture of lithium metal and a negative electrode active material;
a second step of immersing the pellet in an electrolyte comprising an SEI film forming additive; and
a third step of pulverizing, washing and drying the pellet to prepare a powder of the lithium composite negative electrode active material.