发明名称 |
Process for preparing lithium mixed metal oxides and their use as cathode material |
摘要 |
Process for preparing lithium mixed metal oxides which comprise essentially lithium, manganese, cobalt and nickel as metal atoms and have a stoichiometric ratio of lithium to the total transition metals of greater than 1, which comprises
a) the preparation of a mixture designated as intermediate (B) which comprises essentially lithium-comprising mixed metal hydroxides and lithium-comprising mixed metal oxide hydroxides,
where manganese, cobalt and nickel are comprised in the ratio (1-a-b):a:b and the oxidation state averaged over all ions of manganese, cobalt and nickel is at least 4-1.75a-1.75b, where 0≦a≦0.5 and 0.1≦b≦0.8,by a thermal treatment carried out with continual mixing and in the presence of oxygen of a mixture (A) comprising at least one transition metal compound and at least one lithium salt (L), during which L does not melt, andb) the thermal treatment carried out without mixing and in the presence of oxygen of the intermediate (B). |
申请公布号 |
US8980475(B2) |
申请公布日期 |
2015.03.17 |
申请号 |
US201113167079 |
申请日期 |
2011.06.23 |
申请人 |
BASF SE |
发明人 |
Schroedle Simon;Hibst Hartmut;Lampert Jordan Keith;Schweter Mark;Petrovic Ivan |
分类号 |
H01M4/13;C01D1/02;C01G45/12;H01B1/08;C01G53/00;H01M4/505;H01M4/525 |
主分类号 |
H01M4/13 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A process for preparing a lithium mixed metal oxide, the process comprising
a) thermally treating a mixture (A) in the presence of oxygen with continual mixing to form an intermediate (B), wherein: the mixture (A) comprises a transition metal compound comprised of manganese, cobalt, and nickel, and a lithium salt (L); the intermediate (B) comprises a lithium-comprising mixed metal hydroxide and a lithium-comprising mixed metal oxide hydroxide, where manganese, cobalt and nickel are comprised in the ratio (1-a-b):a:b, and the oxidation state averaged over all ions of manganese, cobalt and nickel is at least 4-1.75a-1.75b, such that 0≦a≦0.5 and 0.1≦b≦0.8; and the lithium salt (L) does not melt during the thermal treatment; and b) thermally treating the intermediate (B) without mixing and in the presence of oxygen, to form the lithium mixed metal oxide comprising lithium, manganese, cobalt and nickel having a stoichiometric ratio of lithium to all transition metals of greater than 1, wherein the temperature of said thermally treating in a) is from 310° C. to 400° C. |
地址 |
Ludwigshafen DE |