| 发明名称 |
Positive electrode active materials for lithium secondary battery, method for preparing the same and lithium secondary battery comprising the same |
| 摘要 |
A positive electrode active material for a lithium secondary battery, the material represented by the formulas: LiNi (1-x-y) CoxAl y O 2 or LiNi (1-x-y) CoxMn y O 2 (0.1 ‰¤x ‰¤0.2 and 0.03<y<0.1), and whose X-ray diffraction peak intensity ratio I(2¸=45 degrees)/I(2¸=18 degrees) of an X-ray diffraction peak intensities found in the vicinity of an X-ray diffraction-scanning angle 2¸ of about 45 degrees, to an X-ray diffraction peak intensity found in the vicinity of an X-ray diffraction-scanning angle 2¸ of about 18 degrees, is in the range of from 46% to 51%. The positive electrode active material is fabricated by mixing Ni (1-x-y) CoxAl y O 2 or Ni (1-x-y) CoxMn y O 2 (0.1 ‰¤x ‰¤0.2 and 0.03<y<0.1) with lithium hydrates (LiOH·H 2 O); and calcinating the mixture at a temperature of 750°C, for more than 30 hrs, under an oxygen atmosphere. |
| 申请公布号 |
EP2019442(B1) |
申请公布日期 |
2012.05.02 |
| 申请号 |
EP20080252416 |
申请日期 |
2008.07.16 |
| 申请人 |
SAMSUNG SDI CO., LTD. |
发明人 |
PARK, JUNGJOON;SONG, SUHO |
| 分类号 |
H01M4/505;H01M4/52;H01M4/131;H01M4/50;H01M4/525;H01M10/052;H01M10/0566 |
主分类号 |
H01M4/505 |
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