The invention relates to a lithium ion secondary battery, a hybrid electric vehicle, an electric vehicle and a plug-in hybrid electric vehicle. The lithium ion secondary battery comprises a positive electrode and a negative electrode, wherein the positive electrode includes a positive electrode active material including cobalt, the positive electrode active material contains cobalt, aluminum, andfluorine in a surface layer part, the aluminum has a concentration gradient in the surface layer part, and the fluorine has a peak value detected in a region closer to the surface of the positive electrode active material than the peak value of the aluminum in a line analysis result of energy-dispersed X-ray analysis.

    本发明涉及锂离子二次电池、混合动力汽车、电动汽车及插电式混合动力汽车。锂离子二次电池包括正极和负极,其中,所述正极包括包含钴的正极活性物质,所述正极活性物质在表层部包含所述钴、铝及氟,在所述表层部中,所述铝具有浓度梯度,并且,在利用能量分散型X射线分析的线分析结果中,所述氟具有:在比所述铝具有的峰值更接近所述正极活性物质的表面的区域被检出的峰值。


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    Title :

    Lithium ion secondary battery, hybrid electric vehicle, electric vehicle and plug-in hybrid electric vehicle


    Additional title:

    锂离子二次电池、混合动力汽车、电动汽车及插电式混合动力汽车


    Contributors:

    Publication date :

    2020-10-20


    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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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