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1. 发明申请

WO2011034508A1 CATHODE MATERIALS FOR LITHIUM ION ACCUMULATORS BASED ON LITHIATED VANADIUM OXIDE COMPOUNDS 审中-公开
标题翻译：基于立方氧化钒化合物的锂离子蓄电池的阴极材料
公开(公告)号：WO2011034508A1
公开(公告)日：2011-03-24
申请号：PCT/SI2010/000045
申请日：2010-07-30
申请人： KEMIJSKI INŠTITUT , BELE, Marjan , DOMINKO, Robert , VIDAL-ABRACA GARRIDO, Candela , PIVKO, Maja , GABERŠČEK, Miran
发明人： BELE, Marjan , DOMINKO, Robert , VIDAL-ABRACA GARRIDO, Candela , PIVKO, Maja , GABERŠČEK, Miran
IPC分类号： H01M4/485 , H01M4/131 , C01G23/00 , C01G31/02 , H01M10/052
CPC分类号： H01M4/485 , C01G31/006 , C01P2002/72 , C01P2006/40 , H01M4/131 , H01M10/052
摘要： The invention relates to novel active cathode materials, to their use, and to a process for the manufacture of active electrode materials in the field of lithium ion accumulators based on lithium vanadium oxide stabilized with titanium or aluminum, exhibiting a layered structure. The active electrode materials are represented by the general chemical formula Li x V M O 4 , wherein typically x=2, and M stands preferably for titanium or aluminum. The invention describes the useful electrochemical activity of Li 2 VTiO 4 and Li 2 VAIO 4 , which are compounds having a layered structure, as cathode material in lithium ion accumulators, enabling the reversible exploitation of the electrochemical energy stored in the said compounds within the potential window 1 - 4.6V with respect to metallic lithium. The invention relates to the process for the manufacture of the said compounds based on the homogenization of the lithium, vanadium, titanium, and aluminum precursors, respectively, in an aqueous medium or in a non-aqueous medium, in the presence of organic acids and/or nonionic dispergators. The obtained dispersion of the precursors is after homogenization dried and thermally treated in an inert atmosphere or in a reductive atmosphere. The products are particles having a chemical composition Li x V M O 4 , and are preferably coated with an electron conductive phase wherein the X-ray powder diffraction analysis corresponds to the layered structure.
摘要翻译：本发明涉及新型的活性阴极材料及其用途，以及用于制造基于用钛或铝稳定的锂钒氧化物的锂离子蓄电池领域中的活性电极材料的方法，其呈现分层结构。活性电极材料由一般化学式LixVMO4表示，其中通常x = 2，M优选用于钛或铝。本发明描述了具有层状结构的化合物的Li2VTiO4和Li2VAIO4作为锂离子蓄电池中的阴极材料的有用的电化学活性，使得能够可逆地利用储存在所述化合物中的电化学能在潜在的窗口1〜4.6V内，尊重金属锂。本发明涉及在有机酸存在下，分别在水性介质或非水介质中均匀化锂，钒，钛和铝前体的方法来制备所述化合物，以及 /或非离子分解剂。所获得的前体分散体在均化后干燥并在惰性气氛或还原气氛中进行热处理。该产品是具有化学组成为LixVMO4的颗粒，并且优选地涂覆有电子传导相，其中X射线粉末衍射分析对应于层状结构。

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