US 12,272,817 B2
Lithium-replenishing material, preparation method thereof, negative electrode and lithium-ion battery
Riguo Mei, Shenzhen (CN); Xiaoya Chang, Shenzhen (CN); Ziwen Wu, Shenzhen (CN); and Yi Pan, Shenzhen (CN)
Assigned to BYD COMPANY LIMITED, Shenzhen (CN)
Appl. No. 17/785,871
Filed by BYD COMPANY LIMITED, Guangdong (CN)
PCT Filed Nov. 11, 2020, PCT No. PCT/CN2020/128047
§ 371(c)(1), (2) Date Jun. 15, 2022,
PCT Pub. No. WO2021/120927, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 201911296454.7 (CN), filed on Dec. 16, 2019.
Prior Publication US 2023/0023215 A1, Jan. 26, 2023
Int. Cl. H01M 10/0525 (2010.01); H01M 4/04 (2006.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/382 (2013.01) [H01M 4/0404 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A lithium-replenishing material, comprising metal lithium particles and a conductive material, wherein
the conductive material comprises a built-in segment embedded in the metal lithium particles and an exposed segment external to the metal lithium particles;
an electrical conductivity of the conductive material is greater than about 100 s/cm wherein the conductive material comprises a carbon material, and the carbon material is carbon nanotubes, carbon fibers, or graphene; and
the carbon nanotubes comprise single-walled carbon nanotubes and/or multi-walled carbon nanotubes, wherein a diameter of each of the carbon nanotubes is in a range of about 5 nm-100 nm inclusive; and a length of each of the carbon nanotubes is in a range of about 10 μm-80 μm inclusive.