The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 2023
Filed:
Aug. 13, 2018
China Energy Investment Corporation Limited, Beijing, CN;
National Institute of Clean-and-low-carbon Energy, Beijing, CN;
Peng Liang, Beijing, CN;
Wenbin Liang, Beijing, CN;
Chang Wei, Beijing, CN;
Junqing Liu, Beijing, CN;
Dongfang Zheng, Beijing, CN;
Guanghong Pan, Beijing, CN;
China Energy Investment Corporation Limited, Beijing, CN;
National Institute of Clean-And-Low-Carbon Energy, Beijing, CN;
Abstract
The present disclosure relates to the field of carbonaceous composite materials, in particular to a silicon-carbon composite material and a preparation method and a use thereof. The silicon-carbon composite material comprises a composite carbon material and nanometer silicon dispersed therein, wherein the composite carbon material is consisting of a graphitic crystal phase and an amorphous carbon phase, wherein the ratio I/Iof the peak intensity Iof the graphite crystal phase (002) plane relative to the peak intensity Iof the amorphous carbon phase as measured by the X-Ray Diffraction (XRD) is within a range of 0.1-40, the graphite crystalline phase is uniformly dispersed in the composite material, the dispersion coefficient δ of the ratio Id/Ig of Id and Ig as measured by Raman data is less than 0.8. The silicon-carbon composite material provided by the present disclosure can be used as an anode material of a lithium ion battery, such that the lithium ion battery has desirable first charge and discharge performance and cycle stability, and the service life of the lithium ion battery can be prolonged.