摘要:
A negative electrode material for a secondary cell for anon-aqueous liquid electrolyte for realizing a high charging/discharging capacity and a high discharging efficiency, a method for producing such material and a non-aqueous liquid electrolyte secondary cell employing such material. The negative electrode material contains at least one carbonaceous material selected from the group consisting of coffee beans, tea leaves, cane sugar, corns, fruits, straws of cereals and husks of cereals, a carbonaceous material derived from a plant-origin high molecular material containing a sum total of 0.2 to 20 wt % of metal elements, phosphorus and sulphur calculated as elements or a carbonaceous material having a diffraction peak between 30.degree. and 32.degree. of the 2.theta. diffraction angle in the X-ray (CuK.alpha.) powder diffraction pattern. For producing the negative electrode material, at least one carbonaceous material selected from the group consisting of coffee beans, tea leaves, cane sugar, corns, fruits, straws of cereals and husks of cereals, or crystalline or fibrous cellulose admixed with at least one of metal elements, phosphorus or sulphur, is sintered for carbonization. The negative electrode material is used for a non-aqueous liquid electrolyte secondary cell having a positive electrode formed of a lithium compound oxide and a negative electrode formed of a carbonaceous negative electrode material capable of doping and dedoping lithium ions as an active negative electrode material.
摘要:
The present inventions relate to fine particles for image display having excellent properties and displaying images in black. The fine particles for image display are dispersed (suspended) in an electrophoretic dispersion liquid sealed between two opposing substrates and contain porous carbon materials having values of specific surface area determined by the nitrogen BET method of not less than 100 m2/g and pore volume determined by the MP method of not less than 0.1 cm3/g or those having values of specific surface area determined by the nitrogen BET method of not less than 100 m2/g and at least one peak at not more than 10 nm in pore size distribution obtained by the non-localized density functional theory method.
摘要:
Provided is a liquid composite for producing a three-dimensional shaped article, the liquid composite being used in an inkjet printer, the liquid composite including a porous carbon material having a specific surface area value as measured by the nitrogen BET method of 10 m2/g or more, a pore volume as measured by the BJH method of 0.1 cm3/g or more and a pore volume as measured by the MP method of 0.1 cm3/g or more.
摘要:
A DC-DC converter includes an error amplifying circuit to output an error signal by amplifying differences between a reference voltage and a feedback voltage for an output voltage generated by switching an output transistor between on and off, a triangular wave generation circuit to generate a triangular wave, a PWM comparison circuit to compares the triangular wave with the error signal and output a duty control signal having a duty ratio based on the comparison, a pulse width control circuit to control a pulse width of the duty control signal output from the PWM comparison circuit, and a drive circuit to drive the output transistor according to a signal output from the pulse width control circuit.
摘要:
A switching regulator switches according to an input signal and performs PWM control with a PWM pulse signal. The switching regulator includes a pulse width limiting circuit that includes a reference current source, a constant current source, a capacitor, an inverting block including a first switch circuit to supply a constant current to the capacitor and a second switch circuit to discharge a voltage across the capacitor to a ground, a determination circuit to determine whether the voltage across the capacitor becomes a given value or greater, and a limiting circuit to limit a pulse width of the PWM pulse signal. The inverting block further includes either a third switch circuit configured to pass the given constant current or a switching control circuit configured to cause the first and second switch circuits to pass the given constant current regardless of the PWM pulse signal.
摘要:
Provided is a porous carbon material composite formed of a porous carbon material and a functional material and equipped with high functionality. A porous carbon material composite is formed of (A) a porous carbon material obtainable from a plant-derived material having a silicon (Si) content of 5 wt % or higher as a raw material, said porous carbon material having a silicon (Si) content of 1 wt % or lower, and (B) a functional material adhered on the porous carbon material, and has a specific surface area of 10 m2/g or greater as determined by the nitrogen BET method and a pore volume of 0.1 cm3/g or greater as determined by the BJH method and MP method.
摘要:
A light emitting element, includes: a luminescent material which is obtained from a plant-derived material as a raw material, and which contains therein a silicon oxide containing therein silicon having a content rate of 40 wt. % or more, and oxygen having a content rate of 40 wt. % or more as a principal component; a fluorescent substance adsorbed on a surface of the luminescent material; and an energy source for exciting the luminescent material and the fluorescent substance.
摘要:
A charging circuit includes a generator, a step-down circuit for reducing an output voltage of the generator to a predetermined voltage, a current controller for controlling a charging current that is supplied from the step-down circuit to a secondary battery, based on an amount of power generated by the generator, a mode selector for selecting charging modes, and a monitor for monitoring an amount of stored electricity. The step-down circuit receives an output of the generator, in charging, at a high voltage and a small current and is used to charge the battery at a low voltage and a large current.
摘要:
In order to provide a resin composition containing a lactic acid resin, and a molded article obtained from this resin composition which impart flame retardance to the resin composition and suppress a reduction in the molecular weight, use is made of a flame-retardant resin composition which contains a resin composition of which the major component is a lactic acid resin, and a surface-treated metallic hydroxide, wherein the surface-treated metallic hydroxide is added by 50-150 parts by mass per 100 parts by mass of the lactic acid resin.
摘要:
A resin composition comprising 100 parts by mass of lactic acid resin (A), 50 to 100 parts by mass of metal hydroxide (B) and 0.1 to 30 parts by mass of fiber (C), wherein the fiber (C) is a natural fiber or/and a fiber derived from natural material. Moldings thereof satisfy the V-0 standard or VTM-0 standard according to UL94 vertical flame test (UL94V, UL94VTM).