| 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)CoxAlyO2 or LiNi(1-x-y)CoxMnyO2 (0.1<x≦0.15 and 0.03<y<0.1), and whose X-ray diffraction peak intensity ratio 1(2θ=45 degrees)/I(2θ=18 degrees) of an X-ray diffraction peak intensities found in the vicinity of an X-ray diffraction-scanning angle 2θ of about 45 degrees, to an X-ray diffraction peak intensity found in the vicinity of an X-ray diffraction-scanning angle 2θ 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)CoxAlyO2 or Ni(1-x-y)CoxMnyO2 (0.1<x≦0.15 and 0.03<y<0.1) with lithium hydrates (LiOH.H2O); and calcinating the mixture at a temperature of 750° C., for more than 30 hrs, under an oxygen atmosphere. | ||
| 申请公布号 | US8999578(B2) | 申请公布日期 | 2015.04.07 |
| 申请号 | US200812173334 | 申请日期 | 2008.07.15 |
| 申请人 | Samsung SDI Co., Ltd. | 发明人 | Park Jungjoon;Song Suho |
| 分类号 | H01M4/131;H01M4/1391;H01M4/525;H01M10/0525;C01G51/00;C01G53/00;H01M4/505 | 主分类号 | H01M4/131 |
| 代理机构 | Christie, Parker & Hale, LLP | 代理人 | Christie, Parker & Hale, LLP |
| 主权项 | 1. A positive electrode active material for a lithium secondary battery, comprising a lithiated metal oxide represented by the formula LiNi(1-x-y)CoxAlyO2, where 0.1<x≦0.15 and 0.03<y<0.1, wherein the lithiated metal oxide has an X-ray diffraction peak intensity ratio of an X-ray diffraction peak intensity found in the vicinity of an X-ray diffraction-scanning angle 2θ of about 45 degrees to an X-ray diffraction peak intensity found in the vicinity of an X-ray diffraction-scanning angle 2θ of about 18 degrees (I(2θ=45 degrees)/I(2θ=18))degrees) in the range of from 47.8% to 49.6%; and the lithiated metal oxide is formed by calcinating a lithiated metal oxide precursor at a temperature of about 750° C. to 900° C. for about 29 to about 40 hours. | ||
| 地址 | Yongsin-si KR | ||