US 11,757,089 B2
Carbon matrix composite material, preparation method therefor and lithium ion battery comprising same
Peng He, Guangdong (CN); Eming Guo, Guangdong (CN); Jianguo Ren, Guangdong (CN); Youyuan Huang, Guangdong (CN); and Min Yue, Guangdong (CN)
Assigned to BTR NEW MATERIAL GROUP CO., LTD., Guangdong (CN)
Appl. No. 16/652,238
Filed by BTR NEW MATERIAL GROUP CO., LTD., Guangdong (CN)
PCT Filed Sep. 30, 2018, PCT No. PCT/CN2018/109053
§ 371(c)(1), (2) Date Mar. 30, 2020,
PCT Pub. No. WO2019/063006, PCT Pub. Date Apr. 4, 2019.
Claims priority of application No. 201710923184.2 (CN), filed on Sep. 30, 2017.
Prior Publication US 2020/0243846 A1, Jul. 30, 2020
Int. Cl. H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/362 (2013.01) [H01M 4/38 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A carbon-based composite material, comprising a micron-sized soft carbon, a micron-sized hard carbon, a nano-active substance, a first carbon coating layer and a second carbon coating layer;
the first carbon coating layer is coated on the surface of the nano-active substance to form composite particles;
the composite particles are dispersed on the surfaces of the soft carbon and the hard carbon and dispersed into the second carbon coating layer;
the second carbon coating layer is disposed to coat the soft carbon, the hard carbon and the composite particles.