Abstract: Provided is a vinylidene fluoride copolymer particle which is capable of efficiently exhibiting high adhesion between an electrode and a separator. The vinylidene fluoride copolymer particle of the present invention comprises vinylidene fluoride; and a compound having an oxygen atom-containing functional group; wherein a ratio of oxygen atom in a surface of the vinylidene fluoride copolymer particle is higher than a ratio of oxygen atom in the vinylidene fluoride copolymer particle other than the surface thereof.

Abstract: An objective is to provide a vinylidene fluoride polymer composition that is difficult to swell and dissolve in N-methyl-2-pyrrolidone and can form an electrode with a smooth surface. The vinylidene fluoride polymer composition contains a vinylidene fluoride polymer with a melting point of 130° C. or higher. When the vinylidene fluoride polymer composition and N-methyl-2-pyrrolidone are mixed to prepare a vinylidene fluoride polymer dispersion with a content of the vinylidene fluoride polymer of 6 mass %, a ratio of a viscosity of the vinylidene fluoride polymer dispersion at 30° C. to a viscosity of N-methyl-2-pyrrolidone at 30° C. is 20 or less, and when the vinylidene fluoride polymer dispersion is stirred and then allowed to stand for 15 minutes, a rate of change in content of the vinylidene fluoride polymer in an upper 40 volume % area of the vinylidene fluoride polymer dispersion before and after the standing is 2 mass % or less.

Abstract: Provided is a vinylidene fluoride copolymer particle which is capable of efficiently exhibiting high adhesion between an electrode and a separator. The vinylidene fluoride copolymer particle of the present invention comprises vinylidene fluoride; and a compound having an oxygen atom-containing functional group; wherein a ratio of oxygen atom in a surface of the vinylidene fluoride copolymer particle is higher than a ratio of oxygen atom in the vinylidene fluoride copolymer particle other than the surface thereof.

Abstract: Provided is a carbonaceous material for a non-aqueous electrolyte secondary battery anode having high discharge capacity per unit volume and excellent storage characteristics. The carbonaceous material for a non-aqueous electrolyte secondary battery anode of the present invention has a true density (?Bt) determined by a pycnometer method using butanol of not less than 1.55 g/cm3 and less than 1.75 g/cm3 and a discharge capacity of an anode at 0.05 V to 1.5 V in terms of a lithium reference electrode standard of not less than 180 mAh/g. Furthermore, the slope 0.9/X (Vg/Ah) of a discharge curve calculated from a discharge capacity X (Ah/g) and a potential difference of 0.9 (V) corresponding to 0.2 V to 1.1 V in terms of a lithium reference electrode standard is not greater than 0.75 (Vg/Ah), and an absorbed moisture quantity after storage for 100 hours in a 25° C. 50% RH air atmosphere is not greater than 1.5 wt %.

Abstract: To provide a carbonaceous material for a non-aqueous electrolyte secondary battery anode that yields an anode for a non-aqueous electrolyte secondary battery having excellent input/output characteristics, and a non-aqueous electrolyte secondary battery having high discharge capacity per unit volume, and a non-aqueous electrolyte secondary battery and a vehicle comprising this non-aqueous electrolyte secondary battery anode. The carbonaceous material for a non-aqueous electrolyte secondary battery anode of the present invention has a number average particle size of from 0.1 to 2.0 ?m, a value of a number average particle size divided by a volume average particle size of not greater than 0.3, an average interlayer spacing d002 of an (002) plane determined by X-ray diffraction of from 0.340 to 0.390 nm, and an atomic ratio (H/C) of hydrogen and carbon of not greater than 0.10.

Abstract: To provide a carbonaceous material for a non-aqueous electrolyte secondary battery anode that yields an anode for a non-aqueous electrolyte secondary battery having excellent input/output characteristics, and a non-aqueous electrolyte secondary battery having high discharge capacity per unit volume, and a non-aqueous electrolyte secondary battery and a vehicle comprising this non-aqueous electrolyte secondary battery anode. The carbonaceous material for a non-aqueous electrolyte secondary battery anode of the present invention has a number average particle size of from 0.1 to 2.0 ?m, a value of a number average particle size divided by a volume average particle size of not greater than 0.3, an average interlayer spacing d002 of an (002) plane determined by X-ray diffraction of from 0.340 to 0.390 nm, and an atomic ratio (H/C) of hydrogen and carbon of not greater than 0.10.

Abstract: Provided is a carbonaceous material for a non-aqueous electrolyte secondary battery anode having high discharge capacity per unit volume and excellent storage characteristics. The carbonaceous material for a non-aqueous electrolyte secondary battery anode of the present invention has a true density (?Bt) determined by a pycnometer method using butanol of not less than 1.55 g/cm3 and less than 1.75 g/cm3 and a discharge capacity of an anode at 0.05 V to 1.5 V in terms of a lithium reference electrode standard of not less than 180 mAh/g. Furthermore, the slope 0.9/X (Vg/Ah) of a discharge curve calculated from a discharge capacity X (Ah/g) and a potential difference of 0.9 (V) corresponding to 0.2 V to 1.1 V in terms of a lithium reference electrode standard is not greater than 0.75 (Vg/Ah), and an absorbed moisture quantity after storage for 100 hours in a 25° C. 50% RH air atmosphere is not greater than 1.5 wt %.

Abstract: The object of the present invention is to provide a carbonaceous material for an anode of a nonaqueous electrolyte secondary battery which uses a plant-derived organic material as a raw material, has high purity so that alkali metals such as the potassium element and alkali earth metals such as the calcium element are sufficiently removed by de-mineral treatment, and has excellent discharge capacity and efficiency, a novel manufacturing method capable of efficiently mass-producing the carbonaceous material, and a lithium ion secondary battery using the carbonaceous material. The problem described above can be solved by a carbonaceous material for an anode of a nonaqueous electrolyte secondary battery obtained by carbonizing a plant-derived organic material, the atom ratio (H/C) of hydrogen atoms and carbon atoms according to elemental analysis being at most 0.

Abstract: The object of the present invention is to provide a carbonaceous material for an anode of a nonaqueous electrolyte secondary battery which uses a plant-derived organic material as a raw material, has high purity so that alkali metals such as the potassium element are sufficiently removed by de-mineral, and has excellent cycle characteristics, and to provide a lithium ion secondary battery using the carbonaceous material. The carbonaceous material for an anode of a nonaqueous electrolyte secondary battery is a carbonaceous material obtained by carbonizing a plant-derived organic material, the atom ratio of hydrogen atoms and carbon atoms (H/C) according to elemental analysis being at most 0.1, the average particle size Dv50 being from 2 to 50 ?m, the average interlayer spacing of the 002 planes determined by X-ray diffraction being from 0.365 nm to 0.400 nm, the potassium element content being at most 0.5 mass %, the calcium element content being at most 0.