The present invention relates to a positive electrode active material for a lithium ion rechargeable battery, the positive electrode active material comprising particles having Li, M 'and oxygen, where M' comprises: Ni in an amount x, where x > = 80 at% with respect to M '; co in an amount y, with respect to M ', 0.01 at% < = y < = 20.0 at%; mn in an amount z, where 0 at% < = z < = 20.0 at% with respect to M '; y in an amount b, where 0.01 at% < = b < = 2.0 at% with respect to M '; zr in an amount of c, where 0.01 at% < = c < = 2.0 at% with respect to M '; d in an amount a, where 0 at% < = a < = 5.0 at% with respect to M ', where D is at least one element selected from the list of B, Ba, Ca, Cr, Fe, Mg, Mo, Nb, S, Si, Sr, Ti, V, W, and Zn; wherein x, y, z, a, b and c are measured by ICR, where x + y + z + a + b + c is 100.0 at%, where the positive electrode active material comprises an integral particle, where the particle has a Co content measured by cross-sectional EDS (CS-EDS) at the edge of the particle, Co edge, where Co edge represents at% relative to the sum of the Ni, Mn and Co content measured by CS-EDS at the edge of the particle, where x + y + z + a + b + c represents at% relative to the sum of the Ni, Mn and Co content measured by CS-EDS, and where x + y + z + a + b + c represents at% relative to the sum of the Ni, Mn and Co content measured by CS-EDS at the edge of the particle. Wherein the particle has a Co content, Co center, measured by CS-EDS at the center of the particle, where Co center represents at% relative to the sum of the Ni, Mn and Co content measured by CS-EDS at the center of the particle, and where the ratio Co edge/Co center gt; and 1.10.

    本发明涉及一种用于锂离子可再充电电池的正电极活性材料,该正电极活性材料包含具有Li、M’和氧的粒子,其中M’包含:−含量为x的Ni,其中相对于M’,x≥80 at%;−含量为y的Co,其中相对于M’,0.01 at%≤y≤20.0 at%;−含量为z的Mn,其中相对于M’,0 at%≤z≤20.0 at%;−含量为b的Y,其中相对于M’,0.01 at%≤b≤2.0 at%;−含量为c的Zr,其中相对于M’,0.01 at%≤c≤2.0 at%;−含量为a的D,其中相对于M’,0 at%≤a≤5.0 at%,其中D为选自以下的列表的至少一种元素:B、Ba、Ca、Cr、Fe、Mg、Mo、Nb、S、Si、Sr、Ti、V、W和Zn;其中x、y、z、a、b和c是通过ICR测量的,其中x+y+z+a+b+c为100.0 at%,其中该正电极活性材料包含整体粒子,其中该粒子具有在该粒子的边缘处通过横截面EDS(CS‑EDS)测量的Co含量Co边缘,其中Co边缘表示为相对于在该粒子的边缘处通过CS‑EDS测量的Ni、Mn和Co含量的总和的at%,其中该粒子具有在该粒子的中心处通过CS‑EDS测量的Co含量Co中心,其中Co中心表示为相对于在该粒子的中心处通过CS‑EDS测量的Ni、Mn和Co含量的总和的at%,并且其中比率Co边缘/Co中心>1.10。


    Access

    Download


    Export, share and cite



    Title :

    POSITIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL


    Additional title:

    正电极活性材料以及用于制造正电极活性材料的方法


    Contributors:
    XING ZHOU'EN (author) / BOULANGINO MAXIME (author) / YONG HAN-SOL (author) / KIM JIHYE (author)

    Publication date :

    2025-05-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C01G Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle , COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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



    Positive Electrode Active Material Layer, Active Material Layer, Positive Electrode, Secondary Battery, and Vehicle

    YAMAZAKI SHUNPEI / MIKAMI MAYUMI / KURIKI KAZUTAKA et al. | European Patent Office | 2023

    Free access

    POSITIVE ELECTRODE ACTIVE MATERIAL, SECONDARY BATTERY, AND VEHICLE

    IWAKI YUJI / TAKAHASHI TATSUYOSHI / MOMMA YOHEI et al. | European Patent Office | 2023

    Free access

    POSITIVE ELECTRODE ACTIVE MATERIAL, SECONDARY BATTERY, ELECTRONIC DEVICE, AND VEHICLE

    MOMMA YOHEI / MIKAMI MAYUMI / OCHIAI TERUAKI et al. | European Patent Office | 2022

    Free access

    POSITIVE ELECTRODE ACTIVE MATERIAL, SECONDARY BATTERY, ELECTRONIC DEVICE, AND VEHICLE

    MOMMA YOHEI / MIKAMI MAYUMI / OCHIAI TERUAKI et al. | European Patent Office | 2025

    Free access

    POSITIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

    CHOI SANG KYU / LEE SEUNGBYUNG | European Patent Office | 2018

    Free access