Process for preparing high density spherical nickel-cobalt lithium manganate as anode material of lithium ion cell |
Title： |
| Process for preparing high density spherical nickel-cobalt lithium manganate as anode material of lithium ion cell |
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Application Number： |
200410103486 |
Application Date： |
2004/12/30 |
Announcement Date： |
2005/06/01 |
Pub. Date： |
2006/11/01 |
Publication Number： |
1622371 |
Announcement Number： |
1283014 |
Grant Date： |
2006-11-1 |
Granted Pub. Date： |
2006-11-1 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H01M 4/04, H01M 4/48, H01M 4/58, C01D 15/00, C01G 1/02, C01G 45/00, C01G 51/00, C01G 53/00 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Ying Jierong, Jiang Changyin, Wan Chunrong |
Key Words： |
prepare, high density, spherical, nickel-cobalt lithium manganate, anode material,lithium ion cell |
Abstract： |
The present invention relates to energy source material technology, and is preparation process of high density spherical lithium nickel-cobalt-manganate as positive electrode material for lithium ion cell. The preparation process includes the reaction of nickel salt, cobalt salt, manganese salt, ammonium hydroxide and ammonian in water solution to synthesize spherical or spheroid precursor Ni1/3Co1/3Mn1/3 (OTHER)2, washing, drying and mixing with lithium carbonate; and high temperature treatment in the air at 750-950 deg.c for 8-48 hr to obtain spherical lithium nickel-cobalt-manganate. The spherical lithium nickel-cobalt-manganate has great bulk density reaching 2.25-2.50 g/cu cm after vibration densifying, average grain size of 3-7 microns, and reversible specific capacity up to 172-185 mA.hr/g. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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