Si based negative electrode material

A negative electrode active material for a lithium ion battery having the composition formula SiaSnbNicTiyMmCz, wherein a, b, c, y, m and z represent atomic % values, wherein M is either one of more of Fe, Cr and Co, and wherein a>0, b>0, z>0, y 0, 0 m 1, c>5, z+0.5*b>a and c+y>0.7...

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Bibliographic Details
Main Authors PUT STIJN, GILLES MICHAEL, DRIESEN KRIS
Format Patent
LanguageEnglish
Published 09.06.2015
Subjects
ALLOYS
BASIC ELECTRIC ELEMENTS
CABLES
CASTING
CHEMISTRY
CONDUCTORS
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
INSULATORS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WORKING METALLIC POWDER
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Summary:A negative electrode active material for a lithium ion battery having the composition formula SiaSnbNicTiyMmCz, wherein a, b, c, y, m and z represent atomic % values, wherein M is either one of more of Fe, Cr and Co, and wherein a>0, b>0, z>0, y 0, 0 m 1, c>5, z+0.5*b>a and c+y>0.75*b. The process for preparing the active material comprises the steps of:-providing a mixture of elemental and/or alloyed powders of the elements in the composition SiaSnbNicTiyMmCz, and-high energy milling under non-oxidizing conditions of the powder mixture.
Bibliography:Application Number: US201113881796