| Original document(21 pages) Authorized document(22 pages) 中文版 |
A positive active material for a rechargeable lithium battery is provided. The positive active material comprises a lithiated intercalation compound and a coating layer formed on the lithiated intercalation compound. The coating layer comprises a solid-solution compound and an oxide compound having at least two coating elements, the oxide compound represented by the following Formula 1:MpM'qOr (1)wherein M and M' are not the same and are each independently at least one element selected from the group consisting of Zr, Al, Na, K, Mg, Ca, Sr, Ni, Co, Ti, Sn, Mn, Cr, Fe, and V; 0<p<1; 0<q<1; and 1<r<=2, where r is determined based upon p and q. The solid-solution compound is prepared by reacting the lithiated intercalation compound with the oxide compound. The coating layer has a fracture toughness of at least 3.5 MPam 1/2 . A method of making the positive active material is also provided. |
Application Number
申请号 |
02132086 |
Application Date
申请日 |
2002.09.09 |
| Title 名称 |
Plus plate active material for chargable lithium cell and its preparation method |
Publication Number
公开号 |
1414650 |
Publication Date
公开日 |
2003.04.30 |
| Approval Pub. Date |
2006.08.09 |
Granted Pub. Date |
2006.08.09 |
| International Classification 分类号 |
H01M4/48;H01M4/36;H01M4/04 |
Applicant(s) Name
申请人 |
Samsung SDI Co., Ltd. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Cho Chae-Pil;Park Byong-U;Kim Choe-Seung |
| Attorney & Agent 代理人 |
song li jia jinghuan |
| More information 更 多 信 息 |
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