US 12,113,218 B2
Lithium-ion battery negative electrode active material, lithium-ion battery negative electrode, lithium ion battery, battery pack and battery-powered vehicle
Jianrong Shao, Changsha (CN); Qiang Sun, Changsha (CN); Hongdong Wang, Changsha (CN); Junxiang Zhang, Changsha (CN); Liufeng Zhang, Changsha (CN); and Jie Tang, Changsha (CN)
Assigned to HUNAN JINYE HIGH-TECH CO., LTD., Changsha (CN)
Appl. No. 17/284,276
Filed by Hunan Jinye High-tech Co., Ltd., Changsha (CN)
PCT Filed Sep. 25, 2019, PCT No. PCT/CN2019/107752
§ 371(c)(1), (2) Date Apr. 9, 2021,
PCT Pub. No. WO2020/073803, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 201811180348.8 (CN), filed on Oct. 10, 2018; and application No. 201811180350.5 (CN), filed on Oct. 10, 2018.
Prior Publication US 2021/0391577 A1, Dec. 16, 2021
Int. Cl. H01M 4/583 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/583 (2013.01) [H01M 4/623 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A lithium-ion battery anode carbon particulate, wherein in pore structure measured by N2 adsorption and desorption of the carbon particulate, the ratio of the total pore volumes of the pore diameters of 2-10 nm is 5-10%, the ratio of the total pore volumes of the pore diameters of 10-100 nm is 50-65%, and the ratio of the total pore volumes of the pore diameters of 100-200 nm is 30-40%, based on the total pore volume measured by BJH of the pore diameters of 2-200 nm; the carbon particulate has a BET specific surface area within a range of 1-4 m2/g,
wherein the carbon particulate has an interlayer spacing d(002) measured by X-ray diffraction being 0.3368 nm or less, a crystallite size Lc in a C-axis direction within a range of 0.5-0.9 nm, and a graphitization degree of 84-93%.