发明名称 |
LITHIUM SECONDARY BATTERY ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY ELECTRODE, LITHIUM SECONDARY BATTERY, AND METHOD FOR MANUFACTURING SAME |
摘要 |
It is an object of the present invention to provide an active material for a lithium secondary battery having high discharge capacity and excellent in high rate discharge characteristics and a lithium secondary battery using the same. The active material for a lithium secondary battery containing a solid solution of a lithium-transition metal composite oxide having an ±-NaFeO 2 type crystal structure and the lithium secondary battery using the same have features that the composition ratios of the metal elements contained in the solid solution satisfy Li 1 +( x/3 )Co 1-x-y-z Ni y/2 Mg z/2 Mn (2x/3)+(y/2)+(z/2) (x > 0; y > 0; z > 0; x + y + z < 1); the active material has an X-ray diffraction pattern capable of belonging to space group P3 1 12; and the active material has discharge capacity exceeding 200 mAh/g. Further, in addition to the above-mentioned features, they have features that an intensity ratio between the diffraction peak of (003) plane and the diffraction peak of (114) plane measured by X-ray diffractometry is I (003) /I (114) ‰¥ 1.15 and/or the half width of the diffraction peak of (003) plane is 0.15° or less and the half width of the diffraction peak of (114) plane is 0.25° or less. |
申请公布号 |
EP2469630(A1) |
申请公布日期 |
2012.06.27 |
申请号 |
EP20100810027 |
申请日期 |
2010.08.20 |
申请人 |
GS YUASA INTERNATIONAL LTD. |
发明人 |
ENDODAISUKE;KATAYAMA YOSHIHIRO;NUKUDA TOSHIYUKI |
分类号 |
C01G53/00;H01M4/505;H01M4/525;H01M10/058 |
主分类号 |
C01G53/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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