A secondary battery includes a positive electrode; a negative electrode including a negative electrode current collector and a negative electrode active material layer which is provided on the negative electrode current collector and contains a negative electrode active material, and an electrolytic solution. The negative electrode active material includes a carbon-containing material and a silicon-containing material, and a spreading resistance distribution in the negative electrode active material layer is 1.03 or more and 10 or less as measured using a scanning spreading resistance microscope.


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    Title :

    Secondary battery, battery pack, electrically driven vehicle, electric power storage system, electric tool, and electronic device


    Contributors:
    SI QIN (author) / IKEDA YASUHIRO (author) / KOIKE YOSUKE (author)

    Publication date :

    2022-05-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    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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    IHARA MASAYUKI / FUJITA SHIGERU | European Patent Office | 2015

    Free access

    SECONDARY BATTERY, BATTERY PACK, ELECTRICALLY DRIVEN VEHICLE AND ELECTRIC POWER STORAGE SYSTEM

    IHARA MASAYUKI / FUJITA SHIGERU | European Patent Office | 2020

    Free access