Abstract: An electrode having a thermoplastic resin having gas permiability and a metal (3b) supported in a three-dimensional matrix form; an electrolyte composite having an electrolyte membrane (1) and a pair of electrodes (3), the electrodes (3) comprising a porous thermoplastic resin having gas permiability and a metal (3b) supported in a three-dimensional matrix form; a method of manufacturing an electrode (3) comprising plating a metal coating on surfaces of numerous particles (3a) of a thermoplastic resin, and pressurizing the particles; and a method of manufacturing an electrolyte composite having an electrolyte membrane (1), and a pair of electrodes (3), comprising manufacturing the electrodes (3) by plating a metal coating on surfaces of numerous particles (3a) of a thermoplastic resin and pressurizing the particles, and joining the electrolyte membrane (1) through the catalyst to one surface of each electrode and joining the electrolyte membranes, or joining the electrodes (3) through the catalysts (2) to opp

Abstract: Numerous particles of thermoplastic resin supporting a metal on surfaces thereof are joined together by pressure welding. The metal is supported in a three-dimensional matrix on the group of joined particles.

Abstract: This invention relates to a hydrogen absorbing electrode, in which a rare earth element having a basicity weaker than that of La is mixed to a hydrogen absorbing alloy or contained in it for serving as a component element. The invention relates to a nickel electrode, in which a rare earth element is mixed to a nickel hydroxide or contained in it as a solid solution. The invention further relates to an alkaline storage battery, in which a rare earth element is coated on a surface of a nickel electrode or a surface of a separator.

Abstract: A hydrogen absorbing electrode using a hydrogen absorbing alloy including at least one or more kinds of transition metals belonging to VIIb-group, VIII-group or Ib-group in periodic table at a specified percentage, characterized in that a surface part of the hydrogen absorbing alloy forms a rich layer including the foregoing transition metals at a percentage larger than the foregoing specified percentage. Since the rich layer exists, an activation at initial stage of charge/discharge is not required. Accordingly, this electrode can be utilized effectively for a nickel-hydride secondary battery.

Abstract: A device for removing a cladding material from a bottom portion of a control rod guide tube of a nuclear reactor. A rotor tube is removably mounted in a housing of a control rod drive of the nuclear reactor and has at least its forward end portion hydraulically insertable into the bottom portion of the control rod guide tube through an opening located in a lower portion of the control rod guide tube for inserting the control rod drive. The rotor tube is provided at the forward end portion thereof with a foldable rotary brush and cleaning water supply nozzles. A rotary drive shaft is extending through the rotor tube for rotating the rotary brush. The cladding material deposited on the bottom portion of the control rod guide tube that has become radioactive can be readily and positively removed therefrom with a small volume of water while enabling the risk of exposure to radiation to be minimized at a time the operation of cleaning the bottom portion of the control rod guide tube is performed.