Patent application number | Description | Published |
20090237860 | FEEDSTOCK COMPOSITION AND RAW COKE FOR ELECTRICITY STORAGE CARBON MATERIAL AND NEEDLE COKE - The present invention provides feedstock compositions for use of the production of an activated carbon for electric double layer capacitor electrodes or the production of needle coke, comprising a first heavy oil with an initial boiling point of 300° C. or higher, an asphalten content of 12 percent by mass or less, a saturate content of 50 percent by mass or more and a sulfur content of 0.3 percent by mass or less, produced as a residue resulting from vacuum-distillation of a petroleum-based oil and a second heavy oil with an initial boiling point of 150° C. or higher and a sulfur content of 0.5 percent by mass or less, produced by subjecting a hydrocarbon oil to fluidized catalytic cracking. | 09-24-2009 |
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 |
20100181228 | PROCESS FOR PRODUCING PETROLEUM COKE - A process is provided for producing petroleum coke that is high in strength and sufficiently small in thermal expansion coefficient and sufficiently suppressed from puffing. The process includes coking a feedstock containing a first heavy oil having a sulfur content of 1.0 percent by mass or less, a nitrogen content of 0.5 percent by mass or less, and an aromatic index of 0.1 or greater, produced by hydrodesulfurizing a heavy oil with a sulfur content of 1 percent by mass or more under conditions (1) where the total pressure is 10 MPa or greater and less than 16 MPa and the hydrogen partial pressure is 5 MPa or greater and 16 MPa or less or conditions (2) where the total pressure is 20 MPa or greater and 25 MPa or less and the hydrogen partial pressure is greater than 20 MPa and 25 MPa or less, and a second heavy oil with an aromatic index of 0.3 or greater and an initial boiling point of 150° C. or higher. | 07-22-2010 |
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 |
20100298116 | METHOD OF REGENERATING CARBONACEOUS OIL ADSORBENT - The present invention provides a method of regenerating an oil adsorbent, wherein an oil adsorbent even if containing a large amount of oil can be regenerated without taking it out from the facility. The method of regenerating an oil adsorbent comprises washing a carbonaceous oil adsorbent made from calcined coke, with oil adsorbed thereon, with warm water of 40° C. or higher or gas-bubbled warm water of 40° C. or higher. | 11-25-2010 |
20110186478 | PROCESS FOR PRODUCING NEEDLE COKE FOR GRAPHITE ELECTRODE AND STOCK OIL COMPOSITION FOR USE IN THE PROCESS - The invention provides a stock oil composition for needle coke for a graphite electrode, the stock oil composition having a 10 vol % distillation temperature of 280° C. or higher as the distillation property, and when separated into the aromatic component and non-aromatic component by elution chromatography, having an aromatic component content of 30-80 wt % with respect to the total weight of the stock oil composition and an aromatic component molecular weight of 255-1300, as well as a non-aromatic component normal paraffin content of at least 5 parts by weight with respect to 100 parts by weight of the aromatic component. | 08-04-2011 |
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 |
20130251620 | GRAPHITE MATERIAL FOR NEGATIVE ELECTRODES OF LITHIUM ION SECONDARY BATTERY, MANUFACTURING METHOD FOR SAID MATERIAL, AND LITHIUM ION SECONDARY BATTERY USING SAME - A graphite material for a negative electrode is provided which can suppress capacity degradation due to repeated charging and discharging cycles, storage in a charged state, and floating charging. | 09-26-2013 |
20130251621 | METHOD OF PRODUCING AMORPHOUS CARBON MATERIAL FOR THE NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTER, AND LITHIUM ION SECONDARY BATTERY - An amorphous carbon material for lithium-ion secondary battery negative electrode is capable of reducing capacity degradation due to repeated charge and discharge cycles, storage while being charged, or floating charge. | 09-26-2013 |
20130302692 | Graphite Material With Lattice Distortion for Use in Lithium-Ion Secondary Battery Negative Electrodes, and Lithium-Ion Secondary Battery - This disclosure concerns graphite materials having lattice distortion for lithium-ion secondary battery negative electrode obtained by a manufacturing method comprising the steps of: pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process, the raw coke composition having a H/C atomic ratio that is a ratio of hydrogen atoms H and carbon atoms C of 0.30 to 0.50 and having a micro-strength of 7 to 17 mass % to obtain powder of the raw coke composition; giving compressive stress and shear stress to the powder of the raw coke composition so that average circularity is 0.91 to 0.97 to obtain round powder; heating the round powder to obtain a carbonized composition; and graphitizing the carbonized composition. | 11-14-2013 |
20140065056 | GRAPHITE MATERIAL FOR NEGATIVE ELECTRODES OF LITHIUM ION SECONDARY BATTERY, MANUFACATURING METHOD FOR SAID MATERIAL, AND LITHIUM ION SECONDARY BATTERY USING SAME - A graphite material for a negative electrode is provided which can suppress capacity degradation due to repeated charging and discharging cycles, storage in a charged state, and floating charging. | 03-06-2014 |
20140161713 | METHOD OF PRODUCING AMORPHOUS CARBON MATERIAL FOR THE NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY - An amorphous carbon material for lithium-ion secondary battery negative electrode is capable of reducing capacity degradation due to repeated charge and discharge cycles, storage while being charged, or floating charge. | 06-12-2014 |
Patent application number | Description | Published |
20080304206 | Raw Oil Composition for Carbon Material for Electric Double Layer Capacitor Electrode - The present invention provides a raw oil composition for manufacturing a carbon material for electric double layer capacitor electrodes, characterized in that the raw oil composition comprises 25 wt % or more of a saturated component and 16 wt % or less of an asphaltene component among the saturated component, an aromatic component, a resin component, and the asphaltene component obtained by developing of the raw oil composition by thin-layer chromatography; the raw oil composition has an average molecular weight of 960 or less; and the raw oil composition has an aromatic-carbon-fraction (fa) of 0.22 to 0.72. Use of the raw oil composition provides a carbon material for electric double layer capacitor electrodes that can exhibit high capacitance with high reproducibility without manufacturing synthetic pitch. | 12-11-2008 |
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 |
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 |
20130089491 | RAW PETROLEUM COKE COMPOSITION FOR ANODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY - Provided is a raw petroleum coke composition as a raw material of an anode carbon material that can improve, when a battery is discharged at a high current, the ratio capable of maintaining the capacity obtained during discharge at a low current. More specifically, provided is a raw petroleum coke composition for an anode carbon material of a lithium ion secondary battery, the raw petroleum coke composition being produced by subjecting a heavy-oil composition to a delayed coking process, and comprising an atomic ratio of hydrogen atoms H to carbon atoms C(H/C atomic ratio) of 0.30 to 0.50, and a micro-strength of 7 to 17% by weight. Further provided are a method for producing an anode carbon material of a lithium ion secondary battery, comprising the steps of: pulverizing the raw petroleum coke composition into particles having an average particle diameter of 5 to 30 μm, and subjecting the particles to carbonization and/or graphitization; and a lithium ion secondary battery comprising an anode comprising such a carbon material. | 04-11-2013 |
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 |
Patent application number | Description | Published |
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 |
20140030601 | CARBON MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY AND PRODUCTION METHOD THEREFOR - The carbon material for a negative electrode of a lithium ion secondary battery includes: particles having a structure including a plurality of stacked plates which are prepared from a raw coke materials obtained by a delayed coking method, where the ratio of the total of the generation rate of a hydrogen gas, a hydrocarbon gas having one carbon atom, and a hydrocarbon gas having two carbon atoms and the formation rate of a raw coke materials satisfies the condition: total of generation rate/formation rate=0.30 to 0.60, and where the structure is curved into a bow shape, and where, in each of the plates, an average plate thickness is defined as T, an average bow height including the plate thickness is defined as H, and an average length in the vertical direction is defined as L, L/T is 5.0 or more and H/T is from 1.10 to 1.25. | 01-30-2014 |
20140050891 | RAW COKE MATERIALS OF CARBON MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY, AND PRODUCTION METHOD THEREFOR - The raw coke materials of a carbon material for a negative electrode of a lithium ion secondary battery is a striped agglomerate obtained by a delayed coking method under a condition that the ratio of the generation rate (mass %) of a generated gas, which includes a hydrogen gas generated by subjecting a heavy oil to coking and C1-C4 gases and the formation rate (mass %) of the raw coke materials (generation rate/formation rate) is from 0.3 to 0.8, and wherein, when an average length of the base of the stripes is defined as W, an average height is defined as H, and an average length in the vertical direction is defined as L, H/W is from 0.15 to 0.40 and L/W is 5.0 or more. | 02-20-2014 |