The invention discloses a positive plate and a preparation method thereof, a lithium battery and a vehicle. The positive plate comprises a positive current collector and a first positive material layer which are stacked, the first positive electrode material layer comprises first particles with different particle sizes; the first particles meet the condition that Cu is larger than or equal to 2.4 and smaller than or equal to 3.5, Cu = D60/D10, D60 represents the corresponding particle size on the accumulation curve when the volume passing percentage is 60%, and D10 represents the corresponding particle size on the accumulation curve when the volume passing percentage is 10%. According to the positive plate, high energy density and high dynamic performance of the positive plate can be realized through reasonable distribution of electrode material particles with different particle sizes.

    一种正极片及其制备方法、锂电池和车辆,正极片包括层叠设置的正极集流体和第一正极材料层;第一正极材料层包括粒径不同的第一颗粒;第一颗粒满足:2.4≤Cu≤3.5,其中Cu=D60/D10,D60表示体积通过百分率为60%时在累积曲线上对应的粒径,D10表示体积通过百分率为10%时在累积曲线上对应的粒径。上述正极片能够解决通过不同粒径的电极材料颗粒的合理分配实现正极片具有高能量密度和高动力学性能的问题。


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    Title :

    Positive plate and preparation method thereof, lithium battery and vehicle


    Additional title:

    正极片及其制备方法、锂电池和车辆


    Contributors:
    LIU YANG (author) / HE KEFENG (author) / YUAN XIAOTAO (author) / XU ZHAN (author) / LEI YU (author)

    Publication date :

    2024-12-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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