US 11,967,708 B2
Lithium ion battery negative electrode material and preparation method therefor
Tengyu Liang, Guangdong (CN); Chunlei Pang, Guangdong (CN); Jianguo Ren, Guangdong (CN); and Min Yue, Guangdong (CN)
Assigned to BTR NEW MATERIAL GROUP CO., LTD., Guangdong (CN)
Appl. No. 16/760,550
Filed by BTR NEW MATERIAL GROUP CO., LTD., Guangdong (CN)
PCT Filed Nov. 29, 2018, PCT No. PCT/CN2018/118101
§ 371(c)(1), (2) Date Apr. 30, 2020,
PCT Pub. No. WO2019/114555, PCT Pub. Date Jun. 20, 2019.
Claims priority of application No. 201711318537.2 (CN), filed on Dec. 12, 2017.
Prior Publication US 2021/0226202 A1, Jul. 22, 2021
Int. Cl. H01M 4/48 (2010.01); H01M 4/36 (2006.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/483 (2013.01) [H01M 4/366 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An anode material of lithium ion battery, comprising SiOy and an M compound, with M being a metal;
wherein 0.2<y<0.9;
wherein the M compound is contained in an amount of 3%-15% by mass percentage based on the total mass of the anode material being 100%; and
wherein the anode material has a first coulombic efficiency ranging from 79.9%-86.4%.