Active material for lithium secondary battery, electrode for lithium secondary battery, and lithium secondary battery,申请号US201113816610-传众专利搜索

发明名称	Active material for lithium secondary battery, electrode for lithium secondary battery, and lithium secondary battery
摘要	[Object]; There is provided an active material for a lithium secondary battery, which has a high initial efficiency and a high discharge capacity, and particularly has a high discharge capacity at a low temperature (excellent low-temperature characteristic), and a lithium secondary battery using the active material. [Solution]; An active material for a lithium secondary battery, which contains a solid solution of a lithium transition metal composite oxide having an α-NaFeO2 crystal structure, wherein the composition ratio of metal elements contained in the solid solution satisfies, Li1+x−yNayCoaNibMncO2+d (0<y≦0.1, 0.4≦c≦0.7, x+a+b+c=1, 0.1≦x≦0.25, −0.2≦d≦0.2), the active material has an X-ray diffraction pattern attributable to a space group R3-m (P3112), and in the Miller index hkl, the half width of the diffraction peak of the (003) is 0.30° or less and the half width of the diffraction peak of the (114) plane is 0.50° or less. Further, the average of three oxygen position parameters determined from crystal structure analysis by the Rietveld method on the basis of the X-ray diffraction pattern is preferably 0.264 or less.
申请公布号	US9219273(B2)	申请公布日期	2015.12.22
申请号	US201113816610	申请日期	2011.09.21
申请人	GS Yuasa International Ltd.	发明人	Endo Daisuke;Katayama Yoshihiro
分类号	H01M4/131;H01M4/505;H01M4/525;H01M10/0525	主分类号	H01M4/131
代理机构	Rankin, Hill & Clark LLP	代理人	Rankin, Hill & Clark LLP
主权项	1. An active material for a lithium secondary battery, comprising a solid solution of a sodium-containing lithium transition metal composite oxide having an α-NaFeO2 crystal structure, wherein the chemical composition formula of the solid solution satisfies Li1+x−yNayCoaNibMncO2+d (0<y≦0.1, 0.4≦c≦0.7, x+a+b+c=1, 0.1≦x≦0.25, −0.2≦d≦0.2), the active material has an X-ray diffraction pattern attributable to a hexagonal crystal (space group P3112 or R3-m), and in the Miller index hkl, the half width of the diffraction peak of the (003) plane is 0.30° or less and the half width of the diffraction peak of the (114) plane or the (104) plane is 0.50° or less.
地址	Kyoto JP