Abstract: A hydrogen-storing carbonaceous material is provided. The present invention provides a hydrogen-storing carbonaceous material obtained by heating a carbonaceous material at more than about 50° C. under the atmosphere of reducing gas, a hydrogen-stored carbonaceous material obtained by hydrogen storage in the carbonaceous material heated at more than about 50° C. under the atmosphere of reducing gas, and a battery or a fuel cell using the hydrogen-stored carbonaceous material.

Abstract: A hydrogen storing and desorbing apparatus is adapted to store hydrogen by a hydrogen storage material and desorb the stored hydrogen from a hydrogen storage material. The hydrogen storing and desorbing apparatus comprises a pressure-proof vessel (2), a cartridge (3) having an outside diameter smaller than the inside diameter of the pressure-proof vessel and an outer peripheral wall part (3a) and a bottom wall part (3b) made of a porous material and capable of providing a carbonaceous material therein, legs (6) for holding the cartridge (3) in the pressure-proof vessel (2) so that the bottom wall part is spaced from the bottom surface (2b) of the pressure-proof vessel (2) and the outer peripheral wall part is spaced from the inner side surface (2a) of the pressure-proof vessel (2), gas passages (11a) and (11b) connected to the pressure-proof vessel (2), valves (12a) and (12b) provided in the gas passages and a hydrogen gas supply source (14) connected to the pressure-proof vessel (2) by the gas passage.

Abstract: The present invention provides a hydrogen-storing carbonaceous material obtained by heating a carbonaceous material at more than 50° C. under the atmosphere of reducing gas, a hydrogen-stored carbonaceous material obtained by hydrogen storage in the carbonaceous material heated at more than 50° C. under the atmosphere of reducing gas, and a battery or a fuel cell using the hydrogen-stored carbonaceous material.

Abstract: The present invention provides a hydrogen-stored carbonaceous material obtained by storing hydrogen in a carbonaceous material heated at more than 230° C. under a pressure reducing atmosphere, a battery and a fuel cell using this hydrogen-stored carbonaceous material. The carbonaceous material is heated at more than 230° C. under the pressure reducing atmosphere so that its surface can be efficiently cleaned and an area where the surface of the carbonaceous material comes into contact with hydrogen atoms or hydrogen molecules is increased.

Abstract: The present invention provides a hydrogen-storing carbonaceous material obtained by heating a carbonaceous material in a gas atmosphere including hydrogen gas and substantially including no reactive gas as impurity gas to store hydrogen.

Abstract: A hydrogen-storing carbonaceous material is obtained by heating a carbonaceous material before hydrogen is stored under the pressure of hydrogen lower than 50 atmospheric pressure. A hydrogen-stored carbonaceous material is obtained by hydrogen storage in the hydrogen-storing carbonaceous material under the pressure of hydrogen lower than 50 atmospheric pressure. This hydrogen-stored carbonaceous material is used for a battery or a fuel cell. The hydrogen-stored carbonaceous material is heated before the hydrogen is stored under the pressure of hydrogen lower than 50 atmospheric pressure, so that the hydrogen-storing carbonaceous material whose hydrogen storage capacity is extremely improved is produced.

Abstract: A hydrogen-storing carbonaceous material is obtained by heating a carbonaceous material at lower than 800° C. before hydrogen is stored under the pressure of hydrogen of 50 atmospheric pressure or higher. A hydrogen-stored carbonaceous material is obtained by hydrogen storage in the hydrogen-storing carbonaceous material under the pressure of hydrogen of 50 atmospheric pressure or higher. This hydrogen-stored carbonaceous material is used for a battery or a fuel cell. The hydrogen-stored carbonaceous material is heated at lower than 800° C. before the hydrogen is stored under the pressure of hydrogen of 50 atmospheric pressure or higher, so that the hydrogen-storing carbonaceous material whose hydrogen storage capacity is extremely improved is produced.

Abstract: An electron emission source includes a plurality of strip-like cathode electrode lines formed on a lower substrate, an insulating layer formed on the cathode electrode lines; and a plurality of strip-like gate electrode lines formed on the insulating layer in such a manner as to intersect the cathode electrode lines, wherein a number of fine holes are formed in each of intersections between the cathode electrode lines and the gate electrode lines. The intersection forms a pixel region corresponding to one pixel of a display. The fine holes pass through the gate electrode lines and the insulating layer and reach the cathode electrode lines. A metal made projecting structure having a trapezoidal shape in cross-section is formed in each of the fine holes in such a manner as to project from the bottom of the fine hole. An electron emission portion on the surface of which carbon nano-tubes are erected is formed on the upper surface of the projecting structure.

Abstract: A carbonaceous material for hydrogen storage capable of storing hydrogen in the form of protons is provided. The carbonaceous material is composed of molecules having structural curvatures and has a work function of 4.9 eV or more. The carbonaceous material can be produced by an arc discharge process using a carbon based electrode. Examples of these carbonaceous materials include a baked body composed of a polymer produced from fullerenes by baking thereof, a polymer produced from fullerenes by electrolytic polymerization, a carbonaceous derivative produced by introducing groups allowing hydrogen bonding with protons to a carbonaceous material, and a carbonaceous material composed of molecules having structural bending portions. The carbonaceous materials for hydrogen storage are used for electrochemical devices, such as an alkali battery, air cell, and a fuel cell.

Abstract: This invention relates to a fluorescent screen structure wherein a plurality of first electrodes (for example stripelike selected electrodes) having a plurality of fluorescent substances (especially fluorescent substances of different colors for a color screen) severally deposited thereon and second electrodes (for example stripelike reverse bias electrodes not for electrodeposition) not having the fluorescent substances deposited thereon between these first electrodes are provided on a common base (especially a glass substrate for a fluorescent screen panel) and a field emission display (FED) using this and methods for manufacturing these.

Abstract: A fluorescent screen display panel includes selectively deposited fluorescent material on a plurality of color-coated transparent electrodes that are formed on a base member. A spacer support layer is formed on the base member between groups of the color-coated transparent electrodes and a further electrode is formed on the spacer support layer. The further electrode is not coated with fluorescent material. Spacer members that support a display panel are also formed on the spacer support layer.