Abstract: A method for producing a non-aqueous electrolyte secondary cell by preparing a positive electrode by applying a positive electrode mixture onto a positive electrode core material, the mixture containing a positive electrode active material mainly made of a lithium nickel composite oxide and a binding agent containing polyvinylidene fluoride; measuring the amount of carbon dioxide gas generated when a layer of the positive electrode mixture is removed out of the positive electrode and the layer is heated to 200° C. or higher and 400° C. or lower in an inactive gas atmosphere; selecting a positive electrode satisfying the following formulas: y<(1.31x?258)/1000000(200?x<300)??formula 3 y<1.20x?225/1000000(300?x?400)??formula 4 where x is a heating temperature (° C.) and y is the amount of carbon dioxide gas (mole/g) per 1 g of the lithium nickel composite oxide measured; and preparing the non-aqueous electrolyte secondary cell by using the positive electrode selected.

Abstract: A positive electrode active material quality judgment method that can easily and accurately judge the quality of a positive electrode active material used in a non-aqueous electrolyte secondary cell without having to complete the positive electrode. The positive electrode active material quality judgment method includes: heating a positive electrode active material mainly made of a lithium nickel composite oxide to a temperature x (° C.) of 200° C. or higher and 400° C. or lower; measuring the amount of carbon dioxide gas generated from the heating; and the positive electrode active material as a suitable positive electrode active material when the positive electrode active material satisfies formulas 3 and 4: y<(1.31x?258)/1000000(200?x<300)??formula 3 y<1.20x?225/1000000(300?x?400)??formula 4 where x is the heating temperature x (° C.) and y is the amount of carbon dioxide gas (mole/g) generated per 1 g of the positive electrode active material in the heating to the heating temperature x (° C.).

Abstract: Disclosed is a nonaqueous electrolyte secondary battery which has a negative electrode containing silicon as a negative active material, a positive electrode containing a positive active material, a nonaqueous electrolyte and a separator. Characteristically, an additive which retards oxidation of silicon during operation of the battery is contained either in an interior or surface portion of the positive electrode, or in an interior or surface portion of the negative electrode, or in an interior or surface portion of the separator.

Abstract: The present invention provides a simple method for producing a dumbbell-shaped DNA.

Abstract: According to the invention, there can be provided a non-aqueous electrolyte secondary cell whose capacity is hardly decreased even stored at high temperatures in a charged state. The non-aqueous electrolyte secondary cell uses an insulation adhesive tape composed of a base material and a glue material. And in an absorbance spectra of the glue material measured using an infrared spectrophotometer so that the maximum peak intensity is 5 to 20% in transmittance, when peak intensities for C—H stretching vibration of 3040 to 2835 cm?1 and C?O stretching vibration of 1870 to 1560 cm?1 are respectively defined as I(C—H) and I(C?O), a peak intensity ratio represented by I(C?O)/I(C—H) is 0.01 or less.

Abstract: Disclosed is a nonaqueous electrolyte secondary battery which has a negative electrode containing silicon as a negative active material, a positive electrode containing a positive active material, a nonaqueous electrolyte and a separator. Characteristically, an additive which retards oxidation of silicon during operation of the battery is contained either in an interior or surface portion of the positive electrode, or in an interior or surface portion of the negative electrode, or in an interior or surface portion of the separator.

Abstract: The present invention provides a stator coiled in a spiral, capable of mechanically inserting a wound coil in the slot of a stator core. In a stator in which coils are overlapped in a spiral when viewed from the end surface of the stator core after each of one sides of a plurality of coils wound in advance is inserted in the slot of the stator core and each of the other sides of the plurality of coils is inserted in a different slot, by repeating the inserting operation twice or more, the loop of the coils overlapped in a spiral are piled in two layers or more in the radius direction of the stator core and the total coil sectional area inserted in the slots of the stator core is larger than a prescribed value based on the inside radius of the stator core.

Abstract: An electrode for a lithium battery having a thin film composed of active material capable of lithium storage and release, e.g., a microcrystalline or amorphous silicon thin film, provided on a current collector, the electrode being characterized in that a constituent of the current collector is diffused into the thin film.

Abstract: An electrode for a lithium secondary battery includes a thin film of an active material having a first phase that reacts with Li dominantly and a second phase that reacts less readily with Li than the first phase and exists at least before initial-cycle charging and after discharging in each cycle following the initial cycle. A surface of the current collector has an arithmetical mean roughness Ra of 0.1 ?m or greater. A surface of the thin film has irregularities formed corresponding to the irregularities of the current collector surface. By the charging and discharging in the initial cycle and thereafter, gaps form along the thin-film thickness on lines connecting valleys in the thin-film surface irregularities and valleys in the current-collector surface irregularities, and the thin film is divided into columnar or insular structures by the gaps.

Abstract: A positive electrode active material quality judgment method that can easily and accurately judge the quality of a positive electrode active material used in a non-aqueous electrolyte secondary cell without having to complete the positive electrode. The positive electrode active material quality judgment method includes: heating a positive electrode active material mainly made of a lithium nickel composite oxide to a temperature x (° C.) of 200° C. or higher and 1500° C. or lower; measuring the amount of carbon dioxide gas occurring from the heating; and the positive electrode active material as a suitable positive electrode active material when the positive electrode active material satisfies formulas 1 and 2: y<(0.27x?51)/1000000(200?x<400)??formula 1 y<57/1000000(400?x?1500)??formula 2 where x is the heating temperature x (° C.) and y is the amount of carbon dioxide gas (mole/g) occurring per 1 g of the positive electrode active material in the heating to the heating temperature x (° C.).

Abstract: A method for producing with a high yield a high performance non-aqueous electrolyte secondary cell with a reduced cost is provided. The method includes the steps of: a baking step of baking a positive electrode active material precursor containing a lithium source and a nickel source in order to render the positive electrode active material precursor a lithium nickel composite oxide; a measuring step of measuring the amount of carbon dioxide gas occurring when the lithium nickel composite oxide is heated to 200° C. or higher and 1500° C. or lower in an inactive gas atmosphere; a selecting step of selecting a lithium nickel composite oxide satisfying the following formulas: y<(0.27x?51)/1000000(200?x<400)??formula 1 y<57/1000000(400?x?1500)??formula 2 where x is a heating temperature (° C.

Abstract: The present invention provides a stator coiled in a spiral, capable of mechanically inserting a wound coil in the slot of a stator core. In a stator in which coils are overlapped in a spiral when viewed from the end surface of the stator core after each of one sides of a plurality of coils wound in advance is inserted in the slot of the stator core and each of the other sides of the plurality of coils is inserted in a different slot, by repeating the inserting operation twice or more, the loop of the coils overlapped in a spiral are piled in two layers or more in the radius direction of the stator core and the total coil sectional area inserted in the slots of the stator core is larger than a prescribed value based on the inside radius of the stator core.

Abstract: An electrode for lithium batteries, in which a thin film of active material capable of storage and release of lithium, such as a microcrystalline or amorphous silicon thin film, is provided, through an interlayer, on a current collector, the electrode being characterized in that the interlayer comprises a material alloyable with the thin film of active material.

Abstract: The present invention provides a simple method for producing a dumbbell-shaped DNA.

Abstract: Using a jig formed by a first holding groove group and a second holding groove group at the outer circumference which is the same in number as the first holding groove group and has the same pitch as the first holding groove group, one side of coils are inserted into the first holding groove group, and the other side of coils are inserted into the second holding groove group. The jig is inserted into the inner circumference of the stator core, the second holding groove group of the jig matches the slot of the stator core, one side of coils is inserted into the corresponding slot of the stator core by a push out device, and the second holding groove group matches the corresponding slot of the stator core, thus positioning the jig, and then inserting the other side of coils into the corresponding slot by the push out device.

Abstract: Provided are a winding method and a winding apparatus in which it makes possible to expedite the winding cycle with a relatively simple construction. In a winding method in which a plurality of conductor wires are arranged in parallel and wound around a reel to form a coil, which is dropped into a coil receiving jig, the plurality of conductor wires are temporarily wound around a bobbin, and the bobbin is attached to a flyer of a winding apparatus. The flyer is rotated to wind the plurality of conductor wires around the reel while drawing them out of the bobbin.

Abstract: An electrode for a rechargeable lithium battery characterized in that thin films of active material capable of lithium storage and release, i.e., microcrystalline or amorphous silicone thin films are deposited on opposite faces of a plate-form current collector.

Abstract: Using a jig having on its outer circumference a holding groove group formed by a plurality of slit-shaped holding grooves with pitches of integral multiple pitches of a slot of a stator core, one side of each coil is projected outside the jig, the other side of each coil is inserted into the holding groove group, an auxiliary member having a plurality of blade portions are provided at the end surface of the jig, the jig is inserted into the inner circumference of the stator core from the auxiliary member side, one side of each coil is pushed into a corresponding slot of the stator core, thus the jig is rotated and positioned such that the holding groove can match the corresponding slot of the stator core, and the push out device inserts the other side of each coil into a corresponding slot.

Abstract: An electrode for a lithium battery having a thin film composed of active material capable of lithium storage and release, e.g., a microcrystalline or amorphous silicon thin film, provided on a current collector, the electrode being characterized in that the current collector has a surface roughness Ra of 0.01 ?m or greater.