NEGATIVE ELECTRODE ACTIVE MATERIAL, MIXED NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, LITHIUM ION SECONDARY BATTERY, AND METHOD FOR PRODUCING NEGATIVE ELECTRODE ACTIVE MATERIAL

NEGATIVE ELECTRODE ACTIVE MATERIAL, MIXED NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, LITHIUM ION SECONDARY BATTERY, AND METHOD FOR PRODUCING NEGATIVE ELECTRODE ACTIVE MATERIAL

A negative electrode active material includes: particles of negative electrode active material, the particles of negative electrode active material contain particles of silicon compound containing a silicon compound (SiOx:0.5≤x≤1.6); the particles of silicon compound contain at least one kind or mor...

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Bibliographische Detailangaben
Hauptverfasser: AWANO, Hidekazu, HIROSE, Takakazu, FURUYA, Masahiro, KAMO, Hiromichi, MATSUNO, Takumi
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS THEREOF
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Zusammenfassung:A negative electrode active material includes: particles of negative electrode active material, the particles of negative electrode active material contain particles of silicon compound containing a silicon compound (SiOx:0.5≤x≤1.6); the particles of silicon compound contain at least one kind or more of Li2SiO3 and Li4SiO4; the particles of negative electrode active material contain Li2CO3 and LiOH on a surface thereof; and a content of the Li2CO3 is 0.01% by mass or more and 5.00% by mass or less relative to a mass of the particles of negative electrode active material and a content of the LiOH is 0.01% by mass or more and 5.00% by mass or less relative to the mass of the particles of negative electrode active material. Thus a negative electrode active material is capable of improving initial charge/discharge characteristics and the cycle characteristics when used as a negative electrode active material of the secondary battery.