Abstract:
[Objectives] The present invention provides a non-aqueous secondary battery in which a material containing Si and O as constituent elements is used in a negative electrode. The present invention provides a non-aqueous secondary battery having good charge discharge cycle characteristics, and suppressing the battery swelling associated with the charge and the discharge. Also, the present invention relates to a negative electrode that can provide the non-aqueous secondary battery. [Solution] The negative electrode includes a negative electrode active material, including a composite of a material containing Si and O as constitution elements (atom ratio x of O to Si is 0.5≦x≦1.5) in combination with a carbon material, and graphite. The graphite has an average particle diameter dg (μm) of 4 to 20 μm. The material containing Si and O as constitution elements has an average particle diameter ds (μm) of 1 μm or more. The ratio ds/dg (i.e., ds to dg) is 0.05 to 1. The material containing Si and O as constitution elements has a crystallite diameter of 50 nm or less, the crystallite diameter is calculated from a half width at a (220) plane of Si obtained by an X-ray diffraction method, using Scherrer Formula. In 100 mass % of the composite of the material containing Si and O as constitution elements, and the carbon material, a ratio of the material containing Si and O as constitution elements is 70 to 95 mass %.
Abstract:
An electromagnetic actuator includes a housing and a pair of stators cooperating with the housing to form a magnetic circuit for a solenoid. Each of the pair of stators has a tubular portion, and the tubular portions of the pair of stators have their one ends disposed in the opposed spaced relation to each other. The solenoid is mounted around the tubular portions of the pair of stators, and an armature is received in the tubular portions of the pair of stators so as to be movable along the axis of the tubular portions. The armature is supplied with a force when an electric current is applied to the solenoid. In order to keep the magnetic resistance of the magnetic circuit to a low level, one of the pair of stators is formed integrally with one end of a tubular body of the housing so that the housing and the one stator constitute a unitary member.
Abstract:
A packet-switching system having a buffer memory for storing received packets. The system has a FIFO-type table for storing data items each consisting of the start and end addresses of every region of the buffer memory from which data has been read out and transferred to a receiving station and which has thus become vacant. The start and end addresses of each region of the buffer memory are controlled, thereby achieving a high-speed control of the buffer memory.
Abstract:
A conductive paste composition consisting of an admixture of: (a) conductive metal particles having an average particle size of about 0.3 to 1.0 .mu.m; (b) particles uniformly coated with a conductive metal and having an average particle size of not more than 1 .mu.m; and (c) an organic medium, the admixture of particles (a) and (b) being dispersed in the organic medium.
Abstract:
The present invention provides a nonaqueous secondary battery with a high capacity, an excellent level of safety, and excellent charge-discharge cycle characteristics. The negative electrode contains, as negative electrode active materials, a graphite carbon material and a material containing Si as a constituent element, and the positive electrode includes, as a positive electrode active material, a lithium-containing composite oxide represented by the following general composition formula (1) and containing sulfur in a range of 0.01 mass % to 0.5 mass %: Li1+yMO2 (1) where y satisfies −0.3≦y
Abstract:
The non-aqueous secondary battery of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator, the negative electrode contains a negative electrode active material containing a graphitic carbon material and a composite in which a carbon coating layer is formed on a surface of a core material containing Si and O as constituent elements, the composite has a carbon content of 10 to 30 mass %, the composite has an intensity ratio I510/I1343 of a peak intensity I510 at 510 cm−1 derived from Si to a peak intensity I1343 at 1343 cm−1 derived from carbon of 0.25 or less when a Raman spectrum of the composite is measured at a laser wavelength of 532 nm, and the half-width of the (111) diffraction peak of Si is less than 3.0° when the crystallite size of an Si phase contained in the core material is measured by X-ray diffractometry using CuKα radiation.
Abstract:
A lithium secondary battery positive electrode according to the present invention is a lithium secondary battery positive electrode including a positive electrode material mixture layer containing a positive electrode active material and a conductivity enhancing agent on one or both sides of a current collector, wherein the positive electrode active material contains a lithium-containing composite oxide, the conductivity enhancing agent contains carbon fibers having an average fiber length of 10 nm or more and less than 1000 nm and an average fiber diameter of 1 nm or more and 100 nm or less, and the content of the carbon fibers in the positive electrode material mixture layer is 0.25 mass % or more and 1.5 mass % or less.
Abstract:
The present invention is related to a surface-mounting ceramic LED package and a method for its production comprising: layering a ceramic green sheet which has a hole and a second ceramic green sheet, inserting a mold with a groove to form a partition in the bottom of the ceramic green sheet substrate, and firing the ceramic green sheet substrate.
Abstract:
The present invention relates to an electrically conductive composition for filling via-holes formed in an electronic circuit substrate containing an electrically conductive metal and a vehicle, wherein the content of the electrically conductive metal is 57 vol % or more, and the composition is a plastic fluid for which fluidity increases when external pressure is applied to the composition.
Abstract:
The present invention relates to a ceramic substrate having a thermal via passing through the substrate for purposes of radiating heat to the outside, wherein the ceramic substrate has a reinforcing structure that divides the opening of the thermal via into two or more parts, and the height of the reinforcing structure is less than the height of the thermal via.