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    • 8. 发明授权
    • Binary, ternary and quaternary lithium phosphates, method for the production thereof and use of the same
    • 二元,三元和四元磷酸锂,其制备方法和用途
    • US08168150B2
    • 2012-05-01
    • US10474555
    • 2002-04-10
    • Reinhard P. HemmerGiesela ArnoldChristian VoglerMargret Wohlfahrt-Mehrens
    • Reinhard P. HemmerGiesela ArnoldChristian VoglerMargret Wohlfahrt-Mehrens
    • H01M4/58C01B25/30
    • H01M4/136C01B25/45H01M4/5825H01M10/052
    • The invention relates to binary, ternary and quaternary lithium phosphates of general formula Li(FexM1yM2z)PO4 wherein M1 represents at least one element of the group comprising Sc, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Be, Mg, Ca, Sr, Ba, Al, Zr, and La; M2 represents at least one element of the group comprising Sc, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Be, Mg, Ca, Sr, Ba, Al, Zr, and La; x=between 0.5 and 1, y=between 0 and 0.5, z=between 0 and 0.5, provided that x+y+z=1, or x=0, y=1 and z=0. The said lithium phosphates can be obtained according to a method whereby precursor compounds of elements Li, Fe, M1 and/or M2 are precipitated from aqueous solutions and the precipitation product is dried in an inert gas atmosphere or a reducing atmosphere at a temperature which is between room temperature and approximately 200° C. and tempered at a temperature of between 300° C. and 1000° C. The inventive lithium phosphates have a very high capacity when used as cathode material in lithium accumulators.
    • 本发明涉及通式为Li(FexM1yM2z)PO4的二元,三元和四价磷酸锂,其中M1代表包括Sc,Ti,V,Cr,Mn,Co,Ni,Cu,Zn,Be, Mg,Ca,Sr,Ba,Al,Zr和La; M2表示包括Sc,Ti,V,Cr,Mn,Co,Ni,Cu,Zn,Be,Mg,Ca,Sr,Ba,Al,Zr和La中的至少一种元素; x = 0.5和1之间,y = 0和0.5之间,z = 0和0.5之间,条件是x + y + z = 1或x = 0,y = 1和z = 0。 所述磷酸锂可以按照以下方法获得,其中元素Li,Fe,M1和/或M2的前体化合物从水溶液中沉淀出来,沉淀产物在惰性气体气氛或还原气氛中在温度为 在室温和约200℃之间,并在300℃和1000℃之间的温度下回火。当用作锂蓄电池中的阴极材料时,本发明的磷酸锂具有非常高的容量。