Preparation method of phosphorus position partly substituted iron lithium phosphate powder |
Title： |
| Preparation method of phosphorus position partly substituted iron lithium phosphate powder |
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Application Number： |
200510132430 |
Application Date： |
2005/12/23 |
Announcement Date： |
2006/06/14 |
Pub. Date： |
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Publication Number： |
1785823 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
C01G 49/00, C01G 41/00, C01D 15/00, C01B 33/00, C01B 25/08, C01B 17/98 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Tang Zilong, Luo Shaohua, Zhang Zhongtai, Lu Junbiao, Yan Junping |
Key Words： |
Preparation method, phosphorus position, partly substituted, iron lithium phosphate powder |
Abstract： |
The present invention discloses a preparation method of phosphorus position partial substituted type iron lithium phosphate powder body, belonging to the field of electrochemical power supply material preparation technology. The molecular formula of said positive electrode iron lithium phosphate of lithium ion cell is LiFeP1-yDyO4. Its preparation method includes the following steps: mixing lithium salt, ferrous salt, phosphate and substitution compound according to a certain mole ratio, drying, low-temperature prefiring and high-temperature secondary calcining so as to obtain the phosphorus position partial substituted type iron lithium phosphate powder body. Said invention uses the compound of boron, tungsten, sulfur and silicon or elementary substance as substitution compound. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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