Preparation method of spherical Li4Ti5O12 as lithium ion cell cathode material |
Title： |
| Preparation method of spherical Li4Ti5O12 as lithium ion cell cathode material |
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Application Number： |
200410098944 |
Application Date： |
2004/12/17 |
Announcement Date： |
2005/06/01 |
Pub. Date： |
2006/09/13 |
Publication Number： |
1622368 |
Announcement Number： |
1275342 |
Grant Date： |
2006-9-13 |
Granted Pub. Date： |
2006-9-13 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H01M 4/04, H01M 4/48, H01M 4/58, C01D 15/00, C01G 1/02, C01G 23/00 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Gao Jian, Jiang Changyin, Ying Jierong |
Key Words： |
Preparation method, spherical Li4Ti5O12, lithium ion cell, cathode material |
Abstract： |
The technological process of preparing spherical Li4Ti5O12 as negative material for lithium ion cell includes: hydrolyzing TiCl4 to form sol A; dissolving hexamethine tetramine and urean in water to prepare solution B; adding solution B into sol A to prepare mixed sol; dropping the mixed sol into kerosene medium and heating to convert the sol into deposited gel; separating, washing, ageing and drying to obtain spherical precursor; adding lithium and performing heat treatment to prepare spherical Li4Ti5O12. When doping, the dopant ion is added into sol A. The technological process is simple and easy to dope carbon to raise the conductivity of the product, and has high application value, and the prepared Li4Ti5O12 is spherical and high in bulk density. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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