Method for preparing high-density spherical lithium iron phosphate and lithium iron manganese phosphate |
Title： |
| Method for preparing high-density spherical lithium iron phosphate and lithium iron manganese phosphate |
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Application Number： |
200510002012 |
Application Date： |
2005/01/12 |
Announcement Date： |
2005/06/29 |
Pub. Date： |
2007/03/14 |
Publication Number： |
1632970 |
Announcement Number： |
1305148 |
Grant Date： |
2007-3-14 |
Granted Pub. Date： |
2007-3-14 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H01M 4/04, H01M 4/48, H01M 4/58, C01D 15/00, C01B 25/00, C01G 1/02, C01G 45/00 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Ying Jierong, Li Wei, Jiang Changyin |
Key Words： |
prepare, high-density, spherical, lithium iron phosphate, lithium iron manganese phosphate |
Abstract： |
This invention discloses a high-density ball ferric phosphate lithium and manganous phosphate iron lithium process method used in lithium ion battery positive electrode material in energy material process technique field. The process method comprises the following steps: to use ferric persulfate, phosphor or complex builder or manganese sulfate to process the mixture liquid; to react with the hartshorn solution to generate ball ferrous phosphate ammonium or manganese phosphate ferrous front driver; to mix it with lithium carbonate with mole proportion of one to one after washing and drying; under protection of nitrogen gas and after 600 to 900 degrees for 8 to 48 hours to get the ferric phosphate lithium or manganese phosphate ferrous. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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