Abstract: 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.

Abstract: A method for producing an amorphous carbon material for a negative electrode of a lithium-ion secondary battery includes the steps of; pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process to obtain powder of the raw coke composition, 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 %; giving compressive stress and shear stress to the powder of the raw coke composition to obtain a carbonized composition precursor; and heating the carbonized composition precursor under an inert atmosphere at a temperature from 900° C. to 1,500° C. so that a size of a crystallite Lc(002) is in a range of 2 nm to 8 nm, the size being calculated from a (002) diffraction line obtained by X-ray wide-angle diffractometry.

Abstract: 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. A method of manufacturing a graphite material for a negative electrode of a lithium ion secondary battery is provided in which an atomic ratio H/C of hydrogen atoms H and carbon atoms C in the raw coke composition is in a range of 0.30 to 0.50 and a microstrength of the raw coke composition is in a range of 7 wt % to 17 wt %.

Abstract: 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. A method for producing an amorphous carbon material for a negative electrode of a lithium-ion secondary battery includes the steps of: pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process to obtain powder of the raw coke composition, 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 %; giving compressive stress and shear stress to the powder of the raw coke composition to obtain a carbonized composition precursor; and heating the carbonized composition precursor under an inert atmosphere at a temperature from 900° C. to 1,500° C.

Abstract: 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. A method of manufacturing a graphite material for a negative electrode of a lithium ion secondary battery is provided in which an atomic ratio H/C of hydrogen atoms H and carbon atoms C in the raw coke composition is in a range of 0.30 to 0.50 and a microstrength of the raw coke composition is in a range of 7 wt % to 17 wt %.

Abstract: The present invention relates to nickel-cobalt-manganese-based compound particles which have a volume-based average secondary particle diameter (D50) of 3.0 to 25.0 ?m, wherein the volume-based average secondary particle diameter (D50) and a half value width (W) of the peak in volume-based particle size distribution of secondary particles thereof satisfy the relational formula: W?0.4×D50, and can be produced by dropping a metal salt-containing solution and an alkali solution to an alkali solution at the same time, followed by subjecting the obtained reaction solution to neutralization and precipitation reaction. The nickel-cobalt-manganese-based compound particles according to the present invention have a uniform particle size, a less content of very fine particles, a high crystallinity and a large primary particle diameter, and therefore are useful as a precursor of a positive electrode active substance used in a non-aqueous electrolyte secondary battery.

Abstract: 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. A method of manufacturing a graphite material for a negative electrode of a lithium ion secondary battery is provided in which an atomic ratio H/C of hydrogen atoms H and carbon atoms C in the raw coke composition is in a range of 0.30 to 0.50 and a microstrength of the raw coke composition is in a range of 7 wt % to 17 wt %.

Abstract: 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. A method for producing an amorphous carbon material for a negative electrode of a lithium-ion secondary battery includes the steps of: pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process to obtain powder of the raw coke composition, 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 %; giving compressive stress and shear stress to the powder of the raw coke composition to obtain a carbonized composition precursor; and heating the carbonized composition precursor under an inert atmosphere at a temperature from 900° C. to 1,500° C.

Abstract: The present invention relates to nickel-cobalt-manganese-based compound particles which have a volume-based average secondary particle diameter (D50) of 3.0 to 25.0 ?m, wherein the volume-based average secondary particle diameter (D50) and a half value width (W) of the peak in volume-based particle size distribution of secondary particles thereof satisfy the relational formula: W?0.4×D50, and can be produced by dropping a metal salt-containing solution and an alkali solution to an alkali solution at the same time, followed by subjecting the obtained reaction solution to neutralization and precipitation reaction. The nickel-cobalt-manganese-based compound particles according to the present invention have a uniform particle size, a less content of very fine particles, a high crystallinity and a large primary particle diameter, and therefore are useful as a precursor of a positive electrode active substance used in a non-aqueous electrolyte secondary battery.