Method for preparing Li Fe PO4 ball shape powder
Title：
Method for preparing Li Fe PO4 ball shape powder
Application Number：
 200410098942
Application Date：
 2004/12/17
Announcement Date：
 2005/08/03
Pub. Date：
 2007/02/07
Publication Number：
 1648036
Announcement Number：
 1298621
Grant Date：
 2007-2-7
Granted Pub. Date：
 2007-2-7
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C01B 25/45, H01M 4/58
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Tang Zilong, Lu Junbiao, Zhang Zhongtai
Key Words：
 preparing method, Li Fe PO4, ball shape powder
Abstract：
 The preparation process of spherical LiFePO4 powder includes pre-synthesizing doped or blank nanometer LiFePO4 powder and ball milling the powder, adhesive, dispersant and water to obtain slurry; spray pelletizing and drying, processing under reducing atmosphere, and final sintering the powder under reducing or inert atmosphere to obtain carbon black spherical LiFePO4 powder of nanometer level size. The present invention has short preparation process, low sintering temperature and low power consumption, and the preparation polycrystal powder has narrow grain size distribution, spherical form and improved electronic conducting performance.
Claim：
Priority：
PCT：
LegalStatus：

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2008-4-17
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