Material for negative electrode of non-aqueous electrolyte secondary battery, process for producing the same, negative electrode and battery
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United States of America Patent
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Nov 5, 2013
Grant Date -
Jun 4, 2009
app pub date -
Mar 25, 2005
filing date -
Mar 30, 2004
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Abstract
A negative electrode material for non-aqueous electrolyte secondary batteries, comprises: a carbon material having a sphericity of at least 0.8, and exhibiting an average (002) interlayer spacing d002 of 0.365-0.400 nm, a crystallite size in a c-axis direction Lc(002) of 1.0-3.0 nm, as measured by X-ray diffractometry, a hydrogen-to-carbon atomic ratio (H/C) of at most 0.1 as measured by elementary analysis, and an average particle size Dv50 of 1-20 μm. The negative electrode material is spherical and exhibits excellent performances including high output performance and durability.
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International Classification(s)
- C01B:NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
- H01M:PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT....
- C09C:TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBRO....
- H01B:CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATER....
- D01F:CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL....
- C01D:COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, ....
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