PRECURSOR, METHOD FOR PRODUCING PRECURSOR, CATHODE MATERIAL, METHOD FOR PRODUCING CATHODE MATERIAL AND LITHIUM ION SECONDARY BATTERY

PRECURSOR, METHOD FOR PRODUCING PRECURSOR, CATHODE MATERIAL, METHOD FOR PRODUCING CATHODE MATERIAL AND LITHIUM ION SECONDARY BATTERY

Provided are a precursor of a positive electrode material with which it is possible to obtain a lithium-ion secondary cell having an excellent discharge capacity and cycle characteristics, and a method for manufacturing the precursor. The precursor is a precursor of a positive electrode material use...

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Bibliographische Detailangaben
Hauptverfasser: HAMANO, YOSHIAKI, TOKUMASU, KOKI, NAGANO, RINTARO, MATSUZAKI, AKIRA, EMA, MIKA, SUTO, MIKITO, MASUOKA, HIROYUKI
Format: Patent
Sprache:chi ; eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:Provided are a precursor of a positive electrode material with which it is possible to obtain a lithium-ion secondary cell having an excellent discharge capacity and cycle characteristics, and a method for manufacturing the precursor. The precursor is a precursor of a positive electrode material used for a lithium-ion secondary cell, wherein the precursor is at least one substance selected from the group consisting of nickel-manganese composite hydroxides and nickel-manganese composite oxides, the precursor contains nickel and manganese, the ratio of the nickel content relative to the nickel content and the manganese content is 0.45-0.60 inclusive in molar ratio, and the average valence of manganese is below 4.0.