Abstract:
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery manufacturing method which, while using a highly viscous CMC in an anode, is able to secure peel strength in order to manufacture a nonaqueous electrolyte secondary battery such as a lithium ion battery having excellent output characteristic and cycle characteristic, and a nonaqueous electrolyte secondary battery manufactured by this manufacturing method.SOLUTION: The manufacturing method includes a step in which a first kneaded body 5 is produced by kneading an anode active material (graphite 2), CMC 3 and water 4 with stiff consistency and further water 4 is added for dilution to the first kneaded body 5 to produce an anode paste 1 necessary to manufacture an anode. In the step of producing the anode paste 1, the amount of oil absorbed by the anode active material (graphite 2) is maintained in the range of 50 ml/100 mg to 62 ml/100 mg inclusive, and the viscosity of the CMC 3 is maintained in the range of 6000 mPa s to 8000 mPa s inclusive in 1% aqueous solution viscosity.
Abstract:
PROBLEM TO BE SOLVED: To provide a mixing and dispersing device having higher dispersing ability.SOLUTION: The mixing and dispersing device includes: a rotary blade 130 before mixing and a rotary blade 150 after mixing. The rotary blade 130 before mixing is rotatably arranged at a region E1 on a flowable material side, sends a flowable material sucked from an inner side in a radial direction to a first stage mixing region E3 at an outer side in a radial direction of a partitioning plate 120, and guides a powder material at a region E2 on a powder side to the first stage mixing region E3. The rotary blade 150 after mixing is arranged at a second stage mixing region E4 which is on the downstream side of the first stage mixing region E3 and is different in an axial direction to the first stage mixing region E3 and disperses a mixed material of the flowable material and the powder material distributed to the second stage mixing region E4 from the first stage mixing region E3 and sends it to a discharge port 113 at an outer side in a radial direction.
Abstract:
PROBLEM TO BE SOLVED: To provide a positive electrode for lithium ion secondary battery exhibiting excellent durability by producing an appropriate amount of lithium carbonate on the surface of a positive electrode active material thereby preventing deterioration thereof.SOLUTION: The manufacturing method of an electrode for a secondary battery includes a step S10 for preparing a pasty composition by dispersing a positive electrode active material, a conductive material and a binder into an organic solvent in an atmosphere where the dew-point temperature is -10°C or higher and 7°C or lower, the dry-bulb temperature is 20°C or higher and 30°C or lower, and the relative humidity is 5% or more and 45% or less, and a step S20 for forming a positive electrode mixture layer by coating the surface of a positive electrode collector with the composition.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a lithium ion secondary battery in which dispersion of carbon particles is enhanced in paste for forming positive electrode active material layer, and the amount of organic solvent used in the manufacturing process can be reduced.SOLUTION: The method of manufacturing a lithium ion secondary battery having a positive electrode containing at least a positive electrode active material and a conductive material includes a step for preparing carbon particles as a conductive material and a conductive material dispersion body produced by dispersing a dispersion material into a first solvent, a step for performing wet pulverization of the dispersion body, a step for producing a processed conductive material by evaporating at least a part of the first solvent contained in the processed dispersion body, and a step for preparing a paste for forming a positive electrode active material layer by dispersing at least the processed conductive material, positive electrode active material, and a binding material into a second solvent. A positive electrode obtained by this manufacturing method is used.
Abstract:
PROBLEM TO BE SOLVED: To provide iron powder for dust core having high resistance and excellent iron loss characteristics without causing decrease in mechanical strength. SOLUTION: The surface of iron powder is covered with an oxide film composed of Si-based oxide in which the atomic number ratio between Si and Fe satisfies the following relation: Si/Fe≥0.8. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a dispersing device capable of securely applying coating to a convex tooth.SOLUTION: Marginal surfaces in a circumferential direction of first convex teeth 152, 153 of a first annular dispersing member 150 are obliquely formed so that a gap width is widen from a tooth root side toward a tooth edge side of the circumferentially adjacent first convex teeth 152, 153 over an entire length in a protruding direction. In addition, marginal surfaces in a circumferential direction of second convex teeth 161, 162 of a second annular dispersing member 160 are obliquely formed so that a gap width is widen from a tooth root side toward a tooth edge side of the circumferentially adjacent second convex teeth 161, 162 over an entire length in a protruding direction.
Abstract:
PROBLEM TO BE SOLVED: To provide a rotation type kneading apparatus which has improved durability.SOLUTION: The rotation type kneading apparatus is configured in such a way that a rotary blade 58 is provided at a lower part of a rotary shaft 22 extending in a vertical direction and an upper side of the rotary shaft 22 is a driving side. At a middle part of the rotary shaft 22, contact type seals 82 are arranged and an air supply passage 66 for supplying air to an air reservoir 64 formed between the rotary blade 58 and the contact type seal 82 is formed. Further, a centrifugal blade 65 is provided on the rotary shaft 22 between the contact type seals 82 and the rotary blade 58.
Abstract:
PROBLEM TO BE SOLVED: To provide an exhaust device which can effectively drain water in an exhaust gas passage to the outside while suppressing the generation of abnormal noise. SOLUTION: The exhaust device 1 which exhausts exhaust gas of an engine includes: an exhaust passage component 11 which composes at least a part of the exhaust passage, and in which drain holes 12 to drain the water in the exhaust passage to the outside are provided at a lower part of the exhaust passage; and a sealing member 13 which relatively moves by the difference of thermal expansion between the exhaust passage component 11 and the sealing member to open the drain holes 12 in a cold state and to close the drain holes 12 in a warm state. COPYRIGHT: (C)2011,JPO&INPIT