POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, POSITIVE ELECTRODE MEMBER, LITHIUM ION SECONDARY BATTERY, AND PRODUCTION METHOD FOR SAID POSITIVE ELECTRODE MATERIAL

A positive electrode material for a lithium ion secondary battery, that includes complex particles of lithium iron silicate crystals or lithium manganese silicate crystals and a carbon material. The complex particles have a sea-island structure whereby the lithium iron silicate crystals or the lithi...

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Bibliographic Details
Main Authors SASAKI, HIROKAZU, MATSUDA, YUKI, NEMOTO, ATSUSHI
Format Patent
LanguageEnglish
French
Japanese
Published 10.01.2013
Subjects
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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Summary:A positive electrode material for a lithium ion secondary battery, that includes complex particles of lithium iron silicate crystals or lithium manganese silicate crystals and a carbon material. The complex particles have a sea-island structure whereby the lithium iron silicate crystals or the lithium manganese silicate crystals are scattered in an island shape in the carbon material, and the average circle-equivalent diameter for said islands is less than 15 nm. L'invention concerne un matériau d'électrode positive pour une batterie secondaire au lithium-ion, qui comprend des particules complexes de cristaux de silicate de fer et de lithium ou de cristaux de silicate de manganèse et de lithium, et une matière carbonée. Les particules complexes ont une structure mer-îlots par laquelle les cristaux de silicate de fer et de lithium ou les cristaux de silicate de manganèse et de lithium sont diffusés en une forme d'îlots dans la matière carbonée, et le diamètre moyen de cercle équivalent pour lesdits îlots est inférieur à 15 nm.
Bibliography:Application Number: WO2012JP66844