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Cathode active substance used for lithium ion secondary battery, cathode including same, and lithium ion secondary battery provided with cathode
Provided are a cathode active substance used for a lithium ion secondary battery capable of suppressing an increase in an internal resistance inside the battery caused following charge/discharge cycles, a cathode including the cathode active substance, and a lithium ion secondary battery provided with the cathode. The cathode active substance includes a lithium composite compound represented by Formula: Li1+αNixCoyM11-x-y-zM2zO2+β. When Pi is defined as porosity with respect to an opening diameter of 0.6 μm or less and measured by subjecting the active substance to a mercury press-in method, and Pp is defined as porosity with respect to the same diameter and measured by filling the active substance in a mold with an inner diameter of 10 mm, pressing the filled substance by a load of 40 MPa, and subjecting the pressed substance to the same method, a value of Pp/Pi is 1.5 or less.
Cathode active substance used for lithium ion secondary battery, cathode including same, and lithium ion secondary battery provided with cathode
Provided are a cathode active substance used for a lithium ion secondary battery capable of suppressing an increase in an internal resistance inside the battery caused following charge/discharge cycles, a cathode including the cathode active substance, and a lithium ion secondary battery provided with the cathode. The cathode active substance includes a lithium composite compound represented by Formula: Li1+αNixCoyM11-x-y-zM2zO2+β. When Pi is defined as porosity with respect to an opening diameter of 0.6 μm or less and measured by subjecting the active substance to a mercury press-in method, and Pp is defined as porosity with respect to the same diameter and measured by filling the active substance in a mold with an inner diameter of 10 mm, pressing the filled substance by a load of 40 MPa, and subjecting the pressed substance to the same method, a value of Pp/Pi is 1.5 or less.
Cathode active substance used for lithium ion secondary battery, cathode including same, and lithium ion secondary battery provided with cathode
TOKORO HISATO (Autor:in) / NAKABAYASHI TAKASHI (Autor:in) / TAKANO SHUICHI (Autor:in) / TAKAHASHI SHIN (Autor:in) / GUNJI AKIRA (Autor:in) / TOYAMA TATSUYA (Autor:in)
28.07.2020
Patent
Elektronische Ressource
Englisch
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
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
C04B
Kalk
,
LIME
Lithium secondary battery and cathode of the lithium secondary battery with conductive bonding layer
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