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    • 12. 发明授权
    • Highly homogeneous spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation
compounds and method for preparing same
    • 高均相尖晶石Li1 + XMn2-XO4 + Y插层化合物及其制备方法
    • US5766800A
    • 1998-06-16
    • US867160
    • 1997-06-02
    • Vesselin ManevTitus Faulkner
    • Vesselin ManevTitus Faulkner
    • C01B31/02C01G45/00H01M4/131H01M4/50H01M4/505H01M10/052H01M10/36C01G45/12
    • H01M4/505C01G45/1242H01M4/131C01P2002/32C01P2002/72C01P2002/74C01P2006/12C01P2006/40H01M10/052
    • A novel method of preparing a spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compound with low lattice distortion and a highly ordered and homogeneous structure for 4 V secondary lithium and lithium ion cells is provided. The method of preparing the spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compound comprises providing a spinel Li.sub.1+X Mn.sub.2-X O.sub.4 intercalation compound having a lithium to manganese mole ratio of between about 1.02:2 and 1.1:2 and firing the spinel at different temperature ranges with corresponding gas flow rates to form the spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compounds. The spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compounds have a mean X value of between about 0.01 and 0.05, a mean Y value of between about -0.02 and 0.04 and a full width at half maximum of the x-ray diffraction peaks at a diffraction angle 2.theta. of planes (400) and (440) using CuK.alpha..sub.1 rays of between about 0.08.degree. and 0.13.degree.. The spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compounds may be used in the positive electrodes of secondary lithium and lithium ion cells to provide cells having high specific capacities and long cycling lives.
    • 提供了一种制备具有低晶格畸变的尖晶石Li1 + XMn2-XO4 + Y插层化合物和用于4 V二次锂和锂离子电池的高度有序和均匀结构的新方法。 制备尖晶石Li1 + XMn2-XO4 + Y插层化合物的方法包括提供锂/锰摩尔比在约1.02:2至1.1:2之间的尖晶石Li1 + XMn2-XO4插层化合物,并在不同温度下烧制尖晶石 范围与相应的气体流速形成尖晶石Li1 + XMn2-XO4 + Y插层化合物。 尖晶石Li1 + XMn2-XO4 + Y插入化合物的平均X值在约0.01和0.05之间,平均Y值在约-0.02和0.04之间,并且x射线衍射峰的全宽度在 使用约0.08和0.13之间的CuKα1射线的平面(400)和(440)的衍射角2θ。 尖晶石Li1 + XMn2-XO4 + Y插层化合物可用于二次锂离子电池和锂离子电池的正电极,以提供具有高比容量和长循环寿命的电池。