Abstract: There is provided an electrolysis device configured to use unpurified water containing a small amount of ions of alkaline earth metal such as Ca and Mg as raw water, and to have a structure of supplying the raw water to a cathode chamber in which deposition of scale of the alkaline earth metal on the surface of a cathode provided in the cathode chamber can be prevented. The electrolysis device and the apparatus for producing electrolyzed ozone water are configured by an electrolysis cell formed in a manner that a membrane-electrode assembly is configured by a solid polymer electrolyte separation membrane formed by a cation exchange membrane, and an anode and a cathode which are respectively adhered to both surfaces of the solid polymer electrolyte separation membrane, and the membrane-electrode assembly is compressed from both surfaces thereof, and thus the solid polymer electrolyte separation membrane, the anode, and the cathode are adhered to each other.

Abstract: There is provided an electrolysis device configured to use unpurified water containing a small amount of ions of alkaline earth metal such as Ca and Mg as raw water, and to have a structure of supplying the raw water to a cathode chamber in which deposition of scale of the alkaline earth metal on the surface of a cathode provided in the cathode chamber can be prevented. The electrolysis device and the apparatus for producing electrolyzed ozone water are configured by an electrolysis cell formed in a manner that a membrane-electrode assembly is configured by a solid polymer electrolyte separation membrane formed by a cation exchange membrane, and an anode and a cathode which are respectively adhered to both surfaces of the solid polymer electrolyte separation membrane, and the membrane-electrode assembly is compressed from both surfaces thereof, and thus the solid polymer electrolyte separation membrane, the anode, and the cathode are adhered to each other.

Abstract: This invention is to provide a membrane-electrode assembly, an electrolytic cell using the same, a method and an apparatus for producing ozone water, a method for disinfection and a method for wastewater or waste fluid treatment, by using which allow electrolysis reaction products or decomposition products to be produced at a high efficiency, channel pressure drop to be minimized, and the apparatus to be designed compact in size without sacrificing the production capacity. This invention relates to a membrane-electrode assembly, comprising an anode having a plurality of through-holes of 0.1 mm or more in diameter; a cathode having a plurality of through-holes of 0.1 mm or more in diameter at the same sites as in the anode; and a solid polymer electrolyte membrane coated on one face or the entire face of at least one of the anode and the cathode with the through-holes being maintained, wherein the anode, the solid polymer electrolyte membrane and the cathode are tightly adhered.

Abstract: This invention is to provide a membrane-electrode assembly, an electrolytic cell using the same, a method and an apparatus for producing ozone water, a method for disinfection and a method for wastewater or waste fluid treatment, by using which electrolysis reaction products or decomposition products obtained at the anode are produced at a high efficiency; channel pressure drop is minimized; and the apparatus is designed in compact size without sacrificing the production capacity. This invention relates to a membrane-electrode assembly comprising a solid polymer electrolyte membrane having a cation exchange membrane, an anode and a cathode tightly adhered to the respective surfaces of the solid polymer electrolyte membrane, with a plurality of through-holes with 0.

Abstract: A process for manufacturing electrodes for electrolysis, including the steps of forming an arc ion plating undercoating layer comprising valve metal or valve metal alloy including a crystalline tantalum component and a crystalline titanium component on the surface of the electrode substrate comprising valve metal or valve metal alloy, by an arc ion plating method; heat sintering the electrode substrate to transform only the tantalum component of the arc ion plating undercoating layer into an amorphous substance; and forming an electrode catalyst layer on the surface of the arc ion plating undercoating layer including the valve metal or valve metal alloy including the tantalum component transformed to the amorphous substance and the crystalline titanium component.

Abstract: A process for manufacturing electrodes for electrolysis, including steps of forming an arc ion plating (AIP) undercoating layer including valve metal or valve metal alloy containing a crystalline tantalum component and a crystalline titanium component on a surface of the electrode substrate comprising valve metal or valve metal alloy, by an arc ion plating method; heat sintering, including the steps of coating a metal compound solution, which includes valve metal as a chief element, onto the surface of the AIP undercoating layer, followed by heat sintering to transform only the tantalum component of the AIP undercoating layer into an amorphous substance, and to form an oxide interlayer, which includes a valve metal oxides component as a chief element, on the surface of the AIP undercoating layer containing the transformed amorphous tantalum component and the crystalline titanium component; and forming an electrode catalyst layer on the surface of the oxide interlayer.

Abstract: A process for manufacturing electrodes for electrolysis, including the steps of forming an arc ion plating undercoating layer comprising valve metal or valve metal alloy including a crystalline tantalum component and a crystalline titanium component on the surface of the electrode substrate comprising valve metal or valve metal alloy, by an arc ion plating method; heat sintering the electrode substrate to transform only the tantalum component of the arc ion plating undercoating layer into an amorphous substance; and forming an electrode catalyst layer on the surface of the arc ion plating undercoating layer including the valve metal or valve metal alloy including the tantalum component transformed to the amorphous substance and the crystalline titanium component.

Abstract: A process for manufacturing electrodes for electrolysis, including steps of forming an arc ion plating (AIP) undercoating layer including valve metal or valve metal alloy containing a crystalline tantalum component and a crystalline titanium component on a surface of the electrode substrate comprising valve metal or valve metal alloy, by an arc ion plating method; heat sintering, including the steps of coating a metal compound solution, which includes valve metal as a chief element, onto the surface of the AIP undercoating layer, followed by heat sintering to transform only the tantalum component of the AIP undercoating layer into an amorphous substance, and to form an oxide interlayer, which includes a valve metal oxides component as a chief element, on the surface of the AIP undercoating layer containing the transformed amorphous tantalum component and the crystalline titanium component; and forming an electrode catalyst layer on the surface of the oxide interlayer.

Abstract: The present invention provides a conductive diamond electrode having: a conductive substrate; a coating layer formed on a surface of the conductive substrate, the coating layer containing one of a metal and an alloy each including at least one of niobium and tantalum; and a conductive diamond layer formed on a surface of the coating layer, and a process for producing the conductive diamond electrode.

Abstract: The present invention provides an electrode for electrolysis including: a conductive substrate; and a conductive diamond formed on a surface of the conductive substrate, the conductive substrate having at least one surface shape selected from the group consisting of: (a) a surface shape of a combination of an Ra of 100-1,000-?m and an RSm of 50-10,000 ?m; (b) a surface shape of a combination of an Ra of 2.5-100 ?m and an RSm of 1.5-800 ?m, and (c) a surface shape of a combination of an Ra of 0.01-2 ?m and an RSm of 0.005-250 ?m, and a process for producing the electrode.

Abstract: A conductive diamond electrode including an electrode substrate comprising a material selected from the group consisting of a valve metal and an alloy based on the valve metal, at least a surface of the metal or alloy having been subjected to plasticization processing, or heat treatment in vacuum or inert atmosphere; and a conductive diamond film formed on the plasticization processed surface of the electrode substrate. When the electrode substrate is subjected to plasticization processing and heat treatment, peeling resistance of the conductive diamond film is improved, thereby an electrode life is prolonged.

Abstract: An electrolytic electrode having an interlayer having more excellent peeling resistance and corrosion resistance and longer electrolytic life than conventional electrolytic electrodes and capable of flowing a large amount of current at the industrial level and a process of producing the same are provided. The electrolytic electrode includes a valve metal or valve metal alloy electrode substrate on the surface of which is formed a high-temperature oxidation film by oxidation, and which is coated with an electrode catalyst. The high-temperature oxidation film is integrated with the electrode substrate, whereby peeling resistance is enhanced. Further, by heating the high-temperature oxidation film together with the electrode catalyst, non-electron conductivity of the interlayer is modified, thereby making it possible to flow a large amount of current.

Abstract: A diamond electrode having a prolonged life by combining a conventional diamond electrode having a relatively short life with other components is provided. A diamond electrode for electrolysis includes an electrode substrate, at least the surface of which comprises Magneli phase titanium oxide, and conductive diamond supported as an electrode catalyst on a surface of the electrode. The electrode catalyst may contain a titanium oxide powder. Magneli phase titanium oxide improves conductivity without forming a stable oxide layer on the substrate surface.

Abstract: The present invention provides a conductive diamond electrode having: a conductive substrate; a coating layer formed on a surface of the conductive substrate, the coating layer containing one of a metal and an alloy each including at least one of niobium and tantalum; and a conductive diamond layer formed on a surface of the coating layer, and a process for producing the conductive diamond electrode.

Abstract: The present invention provides an electrode for electrolysis including: a conductive substrate; and a conductive diamond formed on a surface of the conductive substrate, the conductive substrate having at least one surface shape selected from the group consisting of: (a) a surface shape of a combination of an Ra of 100-1,000-?m and an RSm of 50-10,000 ?m; (b) a surface shape of a combination of an Ra of 2.5-100 ?m and an RSm of 1.5-800 ?m, and (c) a surface shape of a combination of an Ra of 0.01-2 ?m and an RSm of 0.005-250 ?m, and a process for producing the electrode.

Abstract: A conductive diamond electrode including an electrode substrate comprising a material selected from the group consisting of a valve metal and an alloy based on the valve metal, at least a surface of the metal or alloy having been subjected to plasticization processing, or heat treatment in vacuum or inert atmosphere; and a conductive diamond film formed on the plasticization processed surface of the electrode substrate. When the electrode substrate is subjected to plasticization processing and heat treatment, peeling resistance of the conductive diamond film is improved, thereby an electrode life is prolonged.

Abstract: An electrolytic electrode having an interlayer having more excellent peeling resistance and corrosion resistance and longer electrolytic life than conventional electrolytic electrodes and capable of flowing a large amount of current at the industrial level and a process of producing the same are provided. The electrolytic electrode includes a valve metal or valve metal alloy electrode substrate on the surface of which is formed a high-temperature oxidation film by oxidation, and which is coated with an electrode catalyst. The high-temperature oxidation film is integrated with the electrode substrate, whereby peeling resistance is enhanced. Further, by heating the high-temperature oxidation film together with the electrode catalyst, non-electron conductivity of the interlayer is modified, thereby making it possible to flow a large amount of current.

Abstract: A diamond electrode having a prolonged life by combining a conventional diamond electrode having a relatively short life with other components is provided. A diamond electrode for electrolysis includes an electrode substrate, at least the surface of which comprises Magneli phase titanium oxide, and conductive diamond supported as an electrode catalyst on a surface of the electrode. The electrode catalyst may contain a titanium oxide powder. Magneli phase titanium oxide improves conductivity without forming a stable oxide layer on the substrate surface.

Abstract: A titanium composite material is disclosed which comprises a titanium or titanium alloy substrate, a base layer formed thereon of a calcium phosphate compound resulting from calcination of a hydrochloric or nitric acid aqueous solution of the calcium phosphate compound, and a covering layer thereon of a calcium phosphate compound formed by sintering a suspension of the calcium phosphate compound applied to the base layer. The composite material is useful as a biological implant. It is produced by activating the surface of the substrate, forming the base layer by calcining the solution coated on the substrate and then forming the covering layer by sintering the suspension coated on the base layer. The covering layer may be hydrothermally treated to increase its crystallinity.