Patent application number | Description | Published |
20090268375 | RAW COKE FOR ELECTRICITY STORAGE CARBON MATERIAL AND NEEDLE COKE - The present invention provides a raw coke having such a structure that the graphitized product resulting from graphitization of the raw coke at a temperature of 2800° C. under an inactive gas atmosphere will have ratios of the crystallite size to the lattice constant of 360 or less in the (002) plane and 1500 or less in the (110) plane, as a raw coke providing active carbon produced by alkali-activating the raw coke, which is reduced in remaining alkali content and can simplify washing operation because washing liquid can easily pass through the activated carbon, or as a raw coke for the production of needle coke. | 10-29-2009 |
20100209331 | ARTIFICIAL GRAPHITE FOR NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY, AND METHOD FOR PRODUCTION THEREOF - The artificial graphite for the negative electrode of a lithium ion secondary battery according to the invention has a crystallite size Lc of 60-120 nm in the c-axial direction according to X-ray diffraction, and a crystallite size Lc of 150 nm or greater when subjected to graphitizing at a temperature of 3000° C. in an inert gas atmosphere. | 08-19-2010 |
20100215567 | AMORPHOUS CARBON MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - The amorphous carbon material for the negative electrode of a lithium ion secondary battery of the invention has a true density of 1.800-2.165 g/cm | 08-26-2010 |
20100266479 | RAW MATERIAL CHARCOAL COMPOSITION FOR NEGATIVE ELECTRODE MATERIAL OF LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - In the raw coke composition of the invention, as the starting material for a negative electrode material of a lithium ion secondary battery, the ratio of the crystallite size Lc(002) and lattice constant co(002) (Lc(002)/co(002)) on the 002 face is no greater than 180, and the ratio of the crystallite size La(110) and the lattice constant ao(110) (La(110)/ao(110)) on the 110 face is no greater than 1500, as determined by X-ray diffraction upon graphitizing in an inert gas atmosphere at a temperature of 2800° C. | 10-21-2010 |
20110253593 | RAW COKE FOR ELECTRICITY STORAGE CARBON MATERIAL AND NEEDLE COKE - The present invention provides a raw coke having such a structure that the graphitized product resulting from graphitization of the raw coke at a temperature of 2800° C. under an inactive gas atmosphere will have ratios of the crystallite size to the lattice constant of 360 or less in the (002) plane and 1500 or less in the (110) plane, as a raw coke providing active carbon produced by alkali-activating the raw coke, which is reduced in remaining alkali content and can simplify washing operation because washing liquid can easily pass through the activated carbon, or as a raw coke for the production of needle coke. | 10-20-2011 |
20110267737 | RAW COKE FOR ELECTRICITY STORAGE CARBON MATERIAL AND NEEDLE COKE - The present invention provides a raw coke having such a structure that the graphitized product resulting from graphitization of the raw coke at a temperature of 2800° C. under an inactive gas atmosphere will have ratios of the crystallite size to the lattice constant of 360 or less in the ( | 11-03-2011 |
20110288351 | RAW OIL COMPOSITION FOR NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY - The invention provides a stock oil composition for a carbon material for a negative electrode for a lithium ion secondary battery, having a 10 vol % distillation temperature of 280° C. or higher as the distillation property, a density of at least 0.90 g/cm | 11-24-2011 |
20120121987 | AMORPHOUS CARBON MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - The amorphous carbon material for the negative electrode of a lithium ion secondary battery of the invention has a true density of 1.800-2.165 g/cm | 05-17-2012 |
20120171572 | CARBON MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - To provide a negative electrode carbon material capable of suppressing capacity degradation which will occur due to repetition of a charge/discharge cycle, storage under a charged state, float charging, or the like. An artificial graphite for a negative electrode of a lithium secondary battery having a c-axis crystallite size L (112) of from 2.0 to 4.2 nm as calculated from a (112) diffraction line obtained by X-ray wide-angle diffractometry and having a half-value width Δν | 07-05-2012 |
20130115518 | STOCK OIL COMPOSITION FOR CARBONACEOUS MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM-ION SECONDARY BATTERY - Provided is a stock oil composition for a carbonaceous material for a negative electrode of a lithium-ion secondary battery which composition is useful for achieving excellent high-speed charge and discharge characteristics. The stock oil composition for a carbonaceous material for a negative electrode of a lithium-ion secondary battery uses a bottom oil of residue fluid catalytic cracking apparatus as a raw material. The stock oil composition comprises, of a saturated component, an aromatic component, a resin component and an asphaltene component detectable by development of the stock oil composition using thin-layer chromatography, the saturated component ranging from 30 to 50% by weight and the aromatic component ranging from 50 to 70% by weight; and has an average molecular weight of from 400 to 600. | 05-09-2013 |
20130224101 | RAW MATERIAL CARBON COMPOSITION FOR NEGATIVE ELECTRODE MATERIAL OF LITHIUM-ION SECONDARY BATTERY - Provided is a raw material carbon composition for a negative electrode material for a lithium-ion secondary battery useful for achieving excellent high-speed charge and discharge characteristics. The raw material carbon composition is obtained by subjecting a stock oil composition to coking treatment, the stock oil composition being obtained by blending a stock oil (1) having a density at 15° C. of from 0.96 to 1.05 g/cm | 08-29-2013 |
20140079622 | CARBON MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - To provide a negative electrode carbon material capable of suppressing capacity degradation which will occur due to repetition of a charge/discharge cycle, storage under a charged state, float charging, or the like. An artificial graphite for a negative electrode of a lithium secondary battery having a c-axis crystallite size L (112) of from 2.0 to 4.2 nm as calculated from a (112) diffraction line obtained by X-ray wide-angle diffractometry and having a half-value width Δν | 03-20-2014 |