摘要:
A lithium secondary battery is provided in which the current collector tab attachment structure has been improved to inhibit a drop in the charge-discharge cycle performance while inhibiting bulging in the battery, thereby allowing the volume energy density to be increased. The positive electrode current collector at the outermost periphery portion of a flat electrode assembly is provided with a positive electrode current collector tab that is parallel to the winding direction of the flat electrode assembly, and the negative electrode current collector at the outermost periphery portion of the flat electrode assembly is provided with a negative electrode current collector tab that is parallel to the winding direction of the flat electrode assembly.
摘要:
A rotary encoder easily position-adjusted in relation to a rotary shaft and is reduced in accuracy deterioration attributable to rotational unstableness and the like which is caused after attachment to the rotary shaft. The encoder is a device attached to the rotary shaft to outputting signals with the rotation of the shaft. The encoder includes a rotary disk, a detector for detecting rotational position of the rotary disk, a disk holder for fixedly attaching the rotary disk to the rotary shaft, and a housing for fixing the detector such that the detector is opposed to the rotary disk. The encoder comprises a retainer attachable to and detachable from the disk holder and the housing for retaining positional relation between the disk holder and the housing.
摘要:
Sizing agents characterized as containing bisphenolpolyalkylene glycol etherester copolymer of a specified structure are particularly suited for coating carbon fibers for unsaturated polyester matrix resinous composites.
摘要:
[Problem] A non-aqueous electrolyte battery is provided that shows good cycle performance and good storage performance under high temperature conditions and exhibits high reliability even with a battery configuration featuring high capacity. A method of manufacturing the battery is also provided.[Means for Solve the Problem] A non-aqueous electrolyte battery includes: a positive electrode having a positive electrode active material layer containing a positive electrode active material; a negative electrode having a negative electrode active material layer containing a negative electrode active material; a separator interposed between the positive electrode and the negative electrode; an electrode assembly including the positive electrode, the negative electrode, and the separator; and a non-aqueous electrolyte impregnated in the electrode assembly, characterized in that: the positive electrode active material contains at least cobalt or manganese; and a coating layer is formed on a surface of the negative electrode active material layer, the coating layer including filler particles and a binder.
摘要:
Provided is a nonaqueous electrolyte secondary battery in which a negative-electrode active material containing a graphite material and silicon or a silicon compound is used and which has an excellent charge-discharge cycle characteristic. In the nonaqueous electrolyte secondary battery, the negative-electrode active material used is an active material containing a graphite material and silicon or a silicon compound, and the negative electrode binder used comprises a polyimide and polyvinylpyrrolidone.
摘要:
A composition for an electrode of a nonaqueous electrolyte secondary battery contains an active material and a binder resin. The composition contains a vinylpyrrolidone-based polymer as the binder resin. The hydroxyl group equivalent of the vinylpyrrolidone-based polymer is within the range of 250 to 2500.
摘要:
A lithium secondary battery having high capacity and good charge-discharge cycle performance is provided. The lithium secondary battery includes a negative electrode (2) containing silicon as a negative electrode active material, a positive electrode (1) containing a positive electrode active material, and a non-aqueous electrolyte. The positive electrode active material is a lithium-transition metal composite oxide including a layered structure represented by the chemical formula LiaNixMnyCozO2, where a, x, y, and z satisfy the expressions: 0≦a≦1.3, x+y+z=1, 0
摘要翻译:提供具有高容量和良好的充放电循环性能的锂二次电池。 锂二次电池包括含有硅作为负极活性物质的负极(2),含有正极活性物质的正极(1)和非水电解质。 正极活性物质是包含由化学式LiaNixMnyCozO2表示的层状结构的锂 - 过渡金属复合氧化物,其中a,x,y和z满足以下表达式:0≦̸ a≦̸ 1.3,x + y + z = 1 ,0
摘要:
Provided are a negative electrode for a nonaqueous electrolyte secondary battery, which has a current collector and a mix layer strongly adhered to each other and can increase a capacity of a nonaqueous electrolyte secondary battery, a fabrication method of the negative electrode and a nonaqueous electrolyte secondary battery including the negative electrode.The negative electrode for a nonaqueous electrolyte secondary battery includes a current collector and a mix layer provided on the current collector. The mix layer contains polyvinyl pyrrolidone having a K value in the range of 34˜112, carboxymethylcellulose, a latex binder and a negative active material. The carboxymethylcellulose is contained in a higher weight concentration than the polyvinyl pyrrolidone.
摘要:
A polypropylene resin having: (1) a melt flow rate (MFR) of 6 to 100 g/10 minutes, (2) a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of 3 to 6, and (3) a 116° C. non-eluted component content (100-W116(%)) of 50% or more and a content of components eluted at 90° C. or less (W90) of 10 to 30%, measured by temperature-rising fractional chromatography (TREF).
摘要:
A temperature control system for a machine tool capable of quickly responding to an ambient temperature change. A mechanical section of the machine tool is surrounded by a machine cover. Gas of which temperature is controlled by a temperature controller is discharged from bearing portions of gas bearings in the mechanical section to a region surrounded by the machine cover through a pipe and a gas bearing channel. A branch pipe is provided for directly introducing a part of gas discharged from the temperature controller to a temperature sensor inside the machine cover. The temperature sensor measures the temperature of gas mixture obtained by mixing the gas introduced directly from the pipe with air inside the machine cover in a predetermined ratio. The result of measurement by the temperature sensor is fed back to the temperature controller to control the temperature of the gas supplied to the gas bearings.