Method for producing ultra-fine LiFePO4/C of lithium ion battery anode material |
Title： |
| Method for producing ultra-fine LiFePO4/C of lithium ion battery anode material |
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Application Number： |
200710121483 |
Application Date： |
2007/09/07 |
Announcement Date： |
2008/04/02 |
Pub. Date： |
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Publication Number： |
101154728 |
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： |
H01M 4/58, H01M 4/48, H01M 4/04, C01B 25/45 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Gao Jian, Jiang Changyin, Ying Jierong, Wan Chunrong, Li Jianjun, He Xiangming, Chen Keqin |
Key Words： |
ultra-fine LiFePO4/C, lithium ion battery, anode material |
Abstract： |
The invention discloses a preparation method for lithium ion battery anode material superfine LiFePO4/C, the technics process of which is that the water solution of Fe(NO3)3.9H2O or Fe2(SO4)3.9H2O is raw material solution. The conductive carbon soot and adulteration ion of certain amount are added into the raw material solution. The ammonia of certain concentration is added into the raw material solution so as to make the iron ion, adulteration ion and conductive carbon soot precipitate. The superfine ferric oxide precursor is obtained by decentralized separation, washing and drying. The high conductivity adulteration superfine LiFePO4/C is prepared by thermal processing added with lithium, phosphoric acid base and carbon resource compound under the protection of inertia gas. The prepared LiFePO4/C by the invention has fine particle of anode material, larger specific surface area, good conductivity and large applicable value in the power type lithium ion battery field. |
Claim： |
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PCT： |
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