GRANULAR POWDER OF TRANSITION METAL COMPOUND AS RAW MATERIAL FOR CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND METHOD FOR ITS PRODUCTION
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United States of America Patent
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Mar 31, 2010
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Nov 1, 2007
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Abstract
To provide a transition metal compound granule serving as a raw material for a cathode active material for a lithium secondary battery, which has high packing density, large volume capacity density and high safety and which is excellent in durability for charge and discharge cycles.A transition metal compound granule serving as a raw material for a positive electrode material for a lithium ion secondary battery, which comprises particles containing at least one element selected from the group consisting of nickel, cobalt and manganese and having an average particle size of the primary particles being at most 1 μm and which is substantially spherical and has an average particle size D50 of from 10 to 40 μm and an average pore size of at most 1 μm.
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