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. 07, 2016
Filed:
Dec. 20, 2011
Shigang LU, Beijing, CN;
Surong Kan, Beijing, CN;
Xiangjun Zhang, Beijing, CN;
Weihua Jin, Beijing, CN;
Shigang Lu, Beijing, CN;
Surong Kan, Beijing, CN;
Xiangjun Zhang, Beijing, CN;
Weihua Jin, Beijing, CN;
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS, Beijing, CN;
Abstract
An anode composite material for lithium ion battery and a preparation method thereof. The composite material is a composite material formed by compounding at least one of SiCO, SiCNO, SiCN and SiBCN with LiMPO, wherein 0.95≦a≦1.1, 0.95≦b≦1.1, and M is at least one of Fe, Co, Ni and Mn. The content of at least one of SiCO, SiCNO, SiCN and SiBCN in the anode composite material is in a range of 1-20 wt % of the total weight of the composite material. The composite material formed by compounding at least one of SiCO, SiCNO, SiCN and SiBCN with LiMPOis obtained by adding LiMPOinto at least one organosilicon polymer of polysiloxane, polysilazane, and polyborosilazane, and then curing, crosslinking, and pyrolyzing. Compared with LiMPO, the composite material has a notable improvement in electrochemistry performance and tap density.