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公开(公告)号:US07959882B2
公开(公告)日:2011-06-14
申请号:US12595794
申请日:2008-04-14
申请人: Kirill Bramnik , Hartmut Hibst , Julian Prölβ
发明人: Kirill Bramnik , Hartmut Hibst , Julian Prölβ
IPC分类号: C01D15/00
CPC分类号: C01G31/00 , C01P2002/72 , C01P2006/12 , C01P2006/40 , H01M4/131 , H01M4/485 , H01M10/052 , H01M2300/0082 , H01M2300/0091
摘要: A process for preparing lithium-rich metal oxides. The process comprises subjecting a mixture of a metal oxide or a metal oxide with low lithium content and a lithium sulfide in a solid state to a thermal treatment to form a lithium-rich metal oxide and elemental sulfur and subliming off the elemental sulfur. The lithium-rich metal oxides produced from the process may be used as cathode material in lithium ion batteries or electrochemical cells. Suitable metal oxides may be selected from metal oxides of the elements of group Va to VIIa of the Periodic Table and may include vanadium oxides, manganese dioxide, manganese oxide, chromium trioxide, niobium pentoxide, tantalum pentoxide, molybdenum oxides or tungsten trioxide. Metal oxides with low lithium content are metal oxides as defined above which comprise a small amount of lithium, in which the molar ratio of lithium atoms to metal atoms is not more than 1:2.30.
摘要翻译: 一种制备富锂金属氧化物的方法。 该方法包括使具有低锂含量的金属氧化物或金属氧化物与固体状态的硫化锂的混合物进行热处理,以形成富锂金属氧化物和元素硫,并使元素硫升华。 从该工艺生产的富锂金属氧化物可用作锂离子电池或电化学电池中的阴极材料。 合适的金属氧化物可以选自周期表第Va至VIIa族元素的金属氧化物,并且可以包括氧化钒,二氧化锰,氧化锰,三氧化铬,五氧化二铌,五氧化二钽,氧化钼或三氧化钨。 低锂含量的金属氧化物是如上定义的金属氧化物,其含有少量的锂,其中锂原子与金属原子的摩尔比不大于1:2.30。