Invention Grant
- Patent Title: Positive composite material for lithium ion batteries and preparation method thereof
- Patent Title (中): 锂离子电池正极复合材料及其制备方法
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Application No.: US14361328Application Date: 2011-12-20
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Publication No.: US09362566B2Publication Date: 2016-06-07
- Inventor: Shigang Lu , Surong Kan , Xiangjun Zhang , Weihua Jin
- Applicant: Shigang Lu , Surong Kan , Xiangjun Zhang , Weihua Jin
- Applicant Address: CN Beijing
- Assignee: GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS
- Current Assignee: GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS
- Current Assignee Address: CN Beijing
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: CN201110391205 20111130
- International Application: PCT/CN2011/084266 WO 20111220
- International Announcement: WO2013/078737 WO 20130606
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/48 ; H01M4/62 ; H01M4/40 ; H01M4/136 ; H01M4/1397 ; H01M4/58 ; H01M4/38
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 LiaMbPO4, 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 LiaMbPO4 is obtained by adding LiaMbPO4 into at least one organosilicon polymer of polysiloxane, polysilazane, and polyborosilazane, and then curing, crosslinking, and pyrolyzing. Compared with LiaMbPO4, the composite material has a notable improvement in electrochemistry performance and tap density.
Public/Granted literature
- US20140346410A1 POSITIVE COMPOSITE MATERIAL FOR LITHIUM ION BATTERIES AND PREPARATION METHOD THEREOF Public/Granted day:2014-11-27
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