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POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY CELL AND POSITIVE ELECTRODE CONTAINING SAME, AND LITHIUM ION SECONDARY CELL PROVIDED WITH SAID POSITIVE ELECTRODE
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: Li 1+± Ni x Co y M 1 1-x-y-z M 2 z O 2+² . 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.
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY CELL AND POSITIVE ELECTRODE CONTAINING SAME, AND LITHIUM ION SECONDARY CELL PROVIDED WITH SAID POSITIVE ELECTRODE
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: Li 1+± Ni x Co y M 1 1-x-y-z M 2 z O 2+² . 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.
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY CELL AND POSITIVE ELECTRODE CONTAINING SAME, AND LITHIUM ION SECONDARY CELL PROVIDED WITH SAID POSITIVE ELECTRODE
POSITIVELEKTRODENAKTIVMATERIAL FÜR LITHIUM-IONEN-SEKUNDÄRZELLE UND POSITIVELEKTRODE DAMIT UND LITHIUM-IONEN-SEKUNDÄRZELLE MIT BESAGTER POSITIVELEKTRODE
MATÉRIAU ACTIF D'ÉLECTRODE POSITIVE POUR PILE RECHARGEABLE LITHIUM-ION ET ÉLECTRODE POSITIVE LE CONTENANT, ET PILE RECHARGEABLE LITHIUM-ION POURVUE DE LADITE ÉLECTRODE POSITIVE
TOKORO HISATO (author) / NAKABAYASHI TAKASHI (author) / TAKANO SHUICHI (author) / TAKAHASHI SHIN (author) / GUNJI AKIRA (author) / TOYAMA TATSUYA (author)
2019-11-20
Patent
Electronic Resource
English
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
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