Patent application number | Description | Published |
20090061322 | ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY AND ELECTRODE STRUCTURE HAVING THE ELECTRODE MATERIAL - The electrode material for a lithium secondary battery according to the present invention includes particles of a solid state alloy having silicon as a main component, wherein the particles of the solid state alloy have a microcrystal or amorphous material including an element other than silicon, dispersed in microcrystalline silicon or amorphized silicon. The solid state alloy preferably contains a pure metal or a solid solution. The composition of the alloy preferably has an element composition in which the alloy is completely mixed in a melted liquid state, whereby the alloy has a single phase in a melted liquid state without presence of two or more phases. The element composition can be determined by the kind of elements constituting the alloy and an atomic ratio of the elements. | 03-05-2009 |
20100021817 | ELECTRODE STRUCTURE FOR LITHIUM SECONDARY BATTERY AND SECONDARY BATTERY HAVING SUCH ELECTRODE STRUCTURE - An electrode structure for a lithium secondary battery including: a main active material layer including a metal powder selected from silicon, tin and an alloy thereof that can store and discharge of lithium by electrochemical reaction, and a binder of an organic polymer; and a wherein the collector. The main active material layer includes a powder of a support material for supporting the electron conduction of the main active material layer in addition to the metal powder and the powder of the support material are particles having a spherical, pseudo-spherical or pillar shape with an average particle size of 0.3 to 1.35 times the thickness of the main active material layer. The support material is one or more selected from graphite, oxides of transition metals and metals that do not electrochemically form alloy with lithium. Organic polymer compounded with a conductive polymer is used for the binder. | 01-28-2010 |
20100323241 | ELECTRODE STRUCTURE FOR LITHIUM SECONDARY BATTERY AND SECONDARY BATTERY HAVING SUCH ELECTRODE STRUCTURE - An electrode structure for a lithium secondary battery including: a main active material layer including a metal powder selected from silicon, tin and an alloy thereof that can store and discharge lithium by electrochemical reaction, and a binder of an organic polymer; and a current collector. The main active material layer includes a powder of a support material for supporting the electron conduction of the main active material layer in addition to the metal powder and the powder of the support material are particles having a spherical, pseudo-spherical or pillar shape with an average particle size of 0.3 to 1.35 times the thickness of the main active material layer. The support material is one or more selected from graphite, oxides of transition metals and metals that do not electrochemically form alloy with lithium. Organic polymer compounded with a conductive polymer is used for the binder. | 12-23-2010 |
20110235783 | X-RAY GENERATING APPARATUS AND CONTROL METHOD THEREOF - An X-ray generating apparatus controls driving of an X-ray tube. The X-ray tube includes an electron source emitting electrons due to application of a voltage, a transmission-type target generating an X-ray due to collision of electrons emitted from the electron source, and a shield member disposed between the electron source and the transmission-type target, the shield member having an opening that electrons emitted from the electron source pass through, and blocking an X-ray that scatters toward the electron source. When generating the X-ray, application of a voltage to the transmission-type target is started, and emission of electrons from the electron source is caused after passage of a predetermined period indicating a time period from starting voltage application until the transmission-type target reaches a predetermined voltage. When stopping X-ray generation, application of the voltage to the transmission-type target is stopped after stopping the emission of electrons from the electron source. | 09-29-2011 |
20110255664 | X-RAY SOURCE AND X-RAY PHOTOGRAPHING APPARATUS INCLUDING THE SOURCE - An X-ray source includes an electron-beam generating unit that generates an electron beam, and a transmission type target electrode to be irradiated with the electron beam to generate X-ray radiation. A plurality of convex portions each having an inclined surface with respect to an incident direction of the electron beam is formed on a surface of the transmission type target electrode. | 10-20-2011 |
20120121069 | X-RAY GENERATING APPARATUS AND METHOD OF DRIVING X-RAY TUBE - An inverter circuit is shared by respective drive circuits that supply a predetermined voltage to a lens electrode and a grid electrode, or to a lens electrode and a cathode electrode. A DC voltage obtained by full-wave rectifying a pulse train output from the inverter circuit is supplied to the lens electrode, a DC voltage obtained by half-wave rectifying a pulse train output from the inverter circuit is supplied to the grid electrode or cathode electrode. At times of a first operation and a last operation of the inverter circuit during a period of generating X-rays, operations of the inverter circuit are controlled such that a trans circuit outputs a negative polarity voltage to the full-wave rectifying circuit and the half-wave rectifying circuit, respectively. | 05-17-2012 |
20120307974 | X-RAY TUBE AND RADIATION IMAGING APPARATUS - An X-ray tube comprises: an envelope which has a cathode at one end and an anode at another end of a barrel of a tubular insulating tube and which has a sealed interior; an electron gun which is arranged inside the envelope and has a shape that protrudes from the cathode; and a target which is electrically connected to the anode and generates X-rays when being irradiated with electrons emitted from the electron gun. With reference to an end position that is a projection of a position of an end on the anode side of the electron gun onto an inner wall of the insulating tube, a mean wall thickness of the barrel is greater on the cathode side than on the anode side. | 12-06-2012 |
20130251107 | X-RAY GENERATING APPARATUS AND CONTROL METHOD THEREOF - An X-ray generating apparatus controls driving of an X-ray tube. The X-ray tube includes an electron source emitting electrons due to application of a voltage, a transmission-type target generating an X-ray due to collision of electrons emitted from the electron source, and a shield member disposed between the electron source and the transmission-type target, the shield member having an opening that electrons emitted from the electron source pass through, and blocking an X-ray that scatters toward the electron source. When generating the X-ray, application of a voltage to the transmission-type target is started, and emission of electrons from the electron source is caused after passage of a predetermined period indicating a time period from starting voltage application until the transmission-type target reaches a predetermined voltage. When stopping X-ray generation, application of the voltage to the transmission-type target is stopped after stopping the emission of electrons from the electron source. | 09-26-2013 |