| 发明名称 |
Process for production of positive electrode active material |
| 摘要 |
A nonaqueous secondary cell is provided, which includes a positive electrode including an active material having the formula: LiyNi1-xMexO2 where Me is one of Ti, V, Mn and Fe; the number of moles of x and y: 0.2<y</=1.3; when Me is Ti, V or Fe, 0<x<0.5; and when Me is Mn, 0</=x<0.6; having a hexagonal crystal structure and lattice constants a0 and c0 in the ranges of 2.83 to 2.89 ANGSTROM and 14.15 to 14.31 ANGSTROM , respectively, as identified by X-ray diffraction pattern; a negative electrode of Li, an alloy of li or a carbon material intercalated with Li; and a nonaqueous electrolyte. The active material having the formula: LiyNi1-xMnxO2 where the number of moles of x and y are 0</=x</=0.3 and 1.0</=y</=1.3 is produced by employing as starting materials an amount of a compound of divalent Mn corresponding to the number of atomic moles of Mn indicated by x, an amount of a nickel compound corresponding to the number of atomic moles of Ni indicated by 1-x, and an amount of a lithium compound corresponding to the number of atomic moles of Li indicated by y; predrying the starting materials, subjecting to a first heat treatment in an oxidizing atmosphere and passing through a cooling stage to produce an intermediate; and subjecting the intermediate to a second heat treatment at a different temperature from that in the first treatment in an oxidizing atmosphere.
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| 申请公布号 |
US5393622(A) |
申请公布日期 |
1995.02.28 |
| 申请号 |
US19930013110 |
申请日期 |
1993.02.03 |
| 申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NITTA, YOSHIAKI;HARAGUCHI, KAZUNORI;KOBAYASHI, SHIGEO;OKAMURA, KAZUHIRO;OHTA, AKIRA |
| 分类号 |
C01G53/00;H01M4/131;H01M4/48;H01M4/485;H01M4/50;H01M4/505;H01M4/52;H01M4/525;H01M10/052;H01M10/0525;H01M10/0568;H01M10/0569;H01M10/36;(IPC1-7):H01M4/52 |
主分类号 |
C01G53/00 |
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