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发明公开
CN106816583A 一种磷酸锰铁锂类材料及其制备方法以及电池浆料和正极与锂电池 有权

一种磷酸锰铁锂类材料及其制备方法以及电池浆料和正极与锂电池
摘要：
本发明公开了一种磷酸锰铁锂类材料及其制备方法以及正极和电池浆料与锂电池。该磷酸锰铁锂类材料具有LiMnxFe1-x-yMyPO4/C结构，其中0≤x≤1，0≤y≤1，M为Co、Ni、Mg、Zn、V和Ti中的一种或多种，且所述磷酸锰铁锂类材料的剪切应力τ7,9(Kpa)＜9.1，τ3,9(Kpa)＜4.6。本发明通过提供一种剪切应力τ7,9(Kpa)＜9.1，τ3,9(Kpa)＜4.6的碳包覆磷酸锰铁锂材料，以提高电池的恒流部分的容量占比及高倍率下的容量保持率。
摘要（英）：

The invention discloses a manganese-iron-lithium phosphate material and a preparation method thereof, a battery paste, a cathode and a lithium battery. The manganese-iron-lithium phosphate material is of a LiMnxFe(l-x-y)MyPO4/C structure, wherein x is greater than or equal to 0 and is smaller than or equal to 1, and y is greater than or equal to 0 and is smaller than or equal to 1; M is selected from one or multiple of Co (cobalt), Ni (nickel), Mg (magnesium), Zn (zinc), V (vanadium) and Ti (titanium); the shear stress tao(7,9) (Kpa) of the manganese-iron-lithium phosphate material is less than 9.1, and the shear stress tao(3,9) (Kpa) is less than 4.6. The manganese-iron-lithium phosphate material with shear stress tao(7,9) (Kpa) less than 9.1 and shear stress tao(3,9) (Kpa) less than 4.6 is used for improving the capacity ratio of constant-current part of the battery and capacity maintaining rate at high multiplying power.

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