A lithium secondary battery comprising a battery case and an electrode group is provided. The electrode group comprises a positive electrode, a negative electrode, a microporous film separator and a nonaqueous electrolyte comprising a lithium salt. The electrode group and the nonaqueous electrolyte are held in the battery case and the electrodes each comprise a current collector and an active-material layer containing an active material capable of occluding/releasing a lithium ion. The nonaqueous electrolyte comprises a difluorophosphoric acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. The battery case comprises a casing material in which at least part of the battery inner side comprises a sheet formed from a thermoplastic resin and with which the electrode group can be enclosed by placing the electrode group in the casing material and heat sealing layers of the thermoplastic resin to each other.


    Access

    Download


    Export, share and cite



    Title :

    LITHIUM SECONDARY BATTERIES AND NONAQUEOUS ELECTROLYTE FOR USE IN THE SAME


    Contributors:

    Publication date :

    2015-08-27


    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



    LITHIUM SECONDARY BATTERIES AND NONAQUEOUS ELECTROLYTE FOR USE IN THE SAME

    MIYAGI HIDEKAZU / KATO RYOICHI | European Patent Office | 2023

    Free access

    LITHIUM SECONDARY BATTERIES AND NONAQUEOUS ELECTROLYTE FOR USE IN THE SAME

    MIYAGI HIDEKAZU / KATO RYOICHI / YOKOMIZO MASAKAZU et al. | European Patent Office | 2021

    Free access

    LITHIUM SECONDARY BATTERIES AND NONAQUEOUS ELECTROLYTE FOR USE IN THE SAME

    MIYAGI HIDEKAZU / KATO RYOICHI / YOKOMIZO MASAKAZU et al. | European Patent Office | 2019

    Free access

    Lithium secondary batteries and nonaqueous electrolyte for use in the same

    KATO RYOICHI / KOTATO MINORU | European Patent Office | 2023

    Free access

    Nonaqueous electrolyte secondary cell

    KOZONO SUGURU / ABE YASUYUKI / NITTA KAZUSHI et al. | European Patent Office | 2017

    Free access