发明名称 |
PRECURSOR OF LI-ION CATHODE MATERIAL, THE PREPARATION METHOD THEREOF AND LI-ION CATHODE MATERIAL |
摘要 |
Li-ion cathode materials with improved performance characteristics and precursors to prepare such materials are disclosed. The precursors consist of complex, mixed alkali transition metal oxides of the formula LixAy(MnaNibMc)O2+d, where M represents one or more selected from transition metal elements beside Ni and Mn, and the groups IIA and IIIA elements of the periodic table, x is between 1 and 1.4, y is between 0.1 and 0.5, and x+y is between 1.1 and 1.5, a+b+c=1, the value of d depends on the proportions and average oxidation states of the cation elements Li, A, Mn, Ni and M such that the combined positive charge of the cation elements is balanced by the number of oxygen anions, A represents one or more elements selected from Na, K and Cs. The Li-ion cathode materials are produced by exchange of element(s) A for Li under mild conditions to limit the degree of structural reorganization that occurs during the reaction. |
申请公布号 |
US2015311514(A1) |
申请公布日期 |
2015.10.29 |
申请号 |
US201514696133 |
申请日期 |
2015.04.24 |
申请人 |
FARASIS ENERGY, INC. |
发明人 |
KEPLER Keith D.;LIU Hongjian;TSANG Floris;VERMEULEN Robbert;HAILEY Phillip;SLATER Michael |
分类号 |
H01M4/36;C01G53/00;H01M4/52;H01M4/04;H01M4/48;H01M4/505 |
主分类号 |
H01M4/36 |
代理机构 |
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代理人 |
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主权项 |
1. A precursor to a Li-ion cathode material containing at least Li, A, Ni and Mn and layered phase Li2MnO3 with a composition of LixAy(MnaNibMc)O2+d, where M represents one or more elements selected from transition metal elements beside Ni and Mn, and the groups IIA and IIIA elements of the periodic table, x is between 1 and 1.4, y is between 0.1 and 0.5, and x+y is between 1.1 and 1.5, a+b+c=1, the value of d depends on the proportions and average oxidation states of the cation elements Li, A, Mn, Ni and M such that the combined positive charge of the cation elements is balanced by the number of oxygen anions, and A represents one or more elements selected from Na, K and Cs. |
地址 |
Hayward CA US |