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WO/2002/077326A2 |
Object of the invention is an anodic structure for mercury cathode cells for the industrial electrolysis of sodium chloride. The new structure is constituted by a grid array comprising a multiplicity of vertically disposed and mutually p...
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WO/2002/075749A1 |
The invention relates to a compound having a high conductivity for electrons, characterized in that it is of the type ABC¿(x-$g(d))?Hal¿(y-$g(z))? with a potassium nickel fluorite structure, where x + y = 4, and Δ and $g(z) lie betwee...
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WO/2002/072481A1 |
A method for generating ozone wherein electricity is allowed to flow between an anode and a cathode in the water to be treated to thereby generate ozone in the water by electrolysis, characterized in that a noble metal such as platinum i...
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WO/2002/068718A2 |
A bipolar assembly for filter-press type electrolysers is described comprising a single sheet, whose two faces work respectively as anodic and cathodic wall, characterised by a design of perimetral flanges which greatly simplifies its co...
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WO/2002/068722A2 |
An oxygen-depolarised cathode for aqueous hydrochloric acid electrolysis membrane cells is described, the cathode being in contact with the membrane and capable of preventing the release of hydrogen into oxygen even at the highest curren...
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WO/2002/067349A1 |
A gas diffusive electrode body, comprising platinum particles (6), carbon powder or carbon granular material (1), and water-repellant film forming carbon powder or carbon granular material (26), whereby an excellent gas permeability can ...
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WO/2002/066382A1 |
A method for killing microorganisms in water, by passing an aqueous feed solution comprising of water containing some form of halide salt into a non-membrane electrolysis cell comprising an anode and a cathode, adjacent to the anode, whi...
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WO/2002/064858A1 |
The allows: Ta-Si, Nb-Si, TaN-Si, NbN-Si and variants are used as enhanced powder anode substrates for electrolytic capacitor anodes (sintered powder masses) with dielectric oxide formation at walls of the internal pores.
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WO/2002/063068A2 |
An electrolytic cell producing sodium chlorate uses an electrode, specifically an anode, having a coating of a mixed metal oxide having ruthenium oxide as an electrocatalyst, a precious metal of the platinum group or its oxide as a stabi...
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WO/2002/061181A2 |
The invention concerns a large-dimension electrode, characterised in that it comprises: a metal support plate (10), a plurality of tiles (14) fixed on a surface (12) of said plate in electric connection therewith and comprising each a si...
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WO2001090442A9 |
In order to regenerate permanganate solutions being utilized for the etching and roughening of plastics surfaces electrolytic methods are known. Though relatively small quantities of by-products are produced with these methods as compare...
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WO/2002/061182A2 |
An electrode having an electrocatalytic surface or coating composed of a mixture with iridium oxide is used in a reversible polarity electrolytic cell to selectively produce an alkali metal hypohalite, preferably sodium hypochlorite, fro...
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WO/2002/053504A1 |
Various drainages (for example, methane fermentation digested liquors, domestic drainage, sewage, tap water, fish farming water, active sludge-processed sewage, waste water from food plants) containing nitrogen, phosphorus and hardly deg...
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WO/2002/052665A1 |
The invention relates to a method for producing electrodes, components, half cells and cells for electrochemical energy converters, such as fuel cells or electrolysis cells, comprising the following steps: a) producing a plane, porous su...
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WO/2002/050340A1 |
The invention relates to a method for preparing a conductive electrode comprising applying a precursor for electrocatalytic or protective coatings on a conductive electrode substrate, irradiating the conductive electrode substrate and th...
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WO/2002/045835A2 |
An electrochemical apparatus (1) permits electric-field-assisted fluidic assembly of objects (2) on a patterned silicon substrate (11) by means of electrical addressing. Charged objects (2) such as beads and live cells are moved electrok...
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WO/2002/038833A1 |
The invention relates to a gas diffusion electrode (1) comprising a hydrophobic gas diffusion layer (3b), a reaction layer (3a), and a hydrophilic layer (5) arranged in the mentioned order wherein the reaction layer (3a) is arranged to a...
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WO/2002/036857A1 |
The invention is relative to an electrolytic cell comprising electrodes spaced apart from the back-wall (1) by means of ribs (3), wherein a portion of the contact surface between the electrodes (2) and the ribs (3) is free from constrain...
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WO/2002/027827A1 |
A tungsten-containing fuel cell catalyst having high electrochemical activity and its method of making are described. The tungsten-containing catalyst may be formed in situ in a fuel cell after the fuel cell is assembled. The catalyst is...
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WO/2002/027821A2 |
An electrode composition comprises a support material that is non-oxidizable at anodic potentials less than about 4 volts, and a catalyst material comprising active electrocatalytic sites. In another embodiment, the electrode can further...
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WO/2002/025759A1 |
An anode structure comprising a ruthenium catalyst is disclosed. The catalyst consists essentially of ruthenium deposited on a conducting support wherein the ruthenium is in metallic form or in a form that is readily reducible to the met...
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WO/2002/018675A2 |
The present invention relates to a process for electrolysing an aqueous solution of hydrochloric acid to chlorine in an electrochemical cell provided with an anode compartment and a cathode compartment including at least one gas diffusio...
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WO/2002/018676A1 |
There is disclosed a method for copper electrowinning and a modified lead electrode for use in such method. The modified electrode is suitable for use as an oxygen anode in low current density, oxygen-evolving applications.
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WO/2002/008492A1 |
An apparatus for the recovery of a halogen or pseudohalogens from a halide compound in solution; wherein the apparatus includes; an electrochemical cell including, an electrode assembly including at least a first and second electrodes in...
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WO/2002/006564A1 |
A process for increasing the active surface area of at least one electrode having a surface comprising a group VIII metal in an electrochemical cell, which also comprises at least one balancing electrode and an aqueous electrolyte which ...
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WO/2002/002847A1 |
The present invention relates to a method for activation of a cathode comprising at least a cathode substrate wherein the cathode is cleaned by means of an acid,the cleaned cathode is coated with at least one electrocatalytic coating sol...
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WO/2001/093353A1 |
The invention relates to a dimensionally stable gas diffusion electrode and to a method for producing the same. The inventive electrode comprises at least one electroconducting catalyst substrate for receiving a coating mass that contain...
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WO/2001/088224A1 |
A cathode, the active surface of which is made up of a certain class of metal alloys and its use in electrolytic processes are described. More specifically, the present invention relates to cathodes that present low hydrogen overvoltage ...
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WO/2001/087776A2 |
An electrode (10) with large active surface area is made by winding a Ti-fiber tow (24) around a rectangular Ti-plate (20), and an electrocatalytic coating of three layers is applied. A precoat (12) comprising a mixture of iridium dioxid...
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WO/2001/079706A2 |
Electrolytic cells are described. The cells comprise the electrolyte K¿2?HPO¿4?, or a less alkaline phosphate buffer solution, electrodes having a modified composition, or a combination of the electrolyte and a modified composition ele...
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WO/2001/077412A1 |
A fluorine gas generating apparatus for subjecting a mixed molten salt containing hydrogen fluoride to electrolysis to form a high purity fluorine gas, which comprises an electrolysis vessel separated by a partition wall (28) into an ano...
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WO/2001/066828A2 |
An electrode comprises an outer tube (1) containing a spiral inner electrode (5) which surrounds a rod (4) held at its ends by fittings (E1, E2) in the ends of the tube.
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WO/2001/061075A1 |
The invention relates to an electrode pair consisting of an anode having a semiconductor coating and a cathode. The invention also relates to a method for electrolytically separating water, especially for obtaining hydrogen. The base mat...
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WO/2001/048268A1 |
An electrode comprising a metal substrate, a tin oxide surface layer and a buffer layer between the surface layer and the substrate, wherein the tin oxide surface layer incorporates molybdenum.
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WO/2001/048269A1 |
The invention relates to a construction for ventilation of hydrogen gas comprising at least a first metallic layer (1), sensitive to hydrogen embrittlement, a second (2) metallic layer, and a mesh (4), wherein the first layer (1) is join...
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WO/2001/037359A2 |
An electrochemical cell capable of operating in pressure differentials exceeding about 2,000 psi, using a porous electrode. The porous electrode comprises a catalyst adsorbed on or in a porous support that is disposed in intimate contact...
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WO/2001/031085A2 |
Metallic glass / amorphous metal electrodes produced by rapid solidification (i) having a structure that is either amorphous or nanocrystalline, (ii) containing the principal alloying element as Ni, (iii) containing alloying additions of...
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WO/2001/028714A1 |
A catalytic powder comprising a plurality of support metal particles with a porous coating (12) surrounding the metal particles (11), the porous coating comprising either an electrocatalytic metal or an electrocatalytic metal continuous ...
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WO/2001/028015A1 |
Gas-diffusion electrodes containing modified carbon products are described wherein the modified carbon product is a carbon product having attached at least one organic group. The modified carbon product comprises a carbon product having ...
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WO/2001/028013A1 |
Gas-diffusion electrodes containing modified carbon products are described wherein the modified carbon product is a carbon product having attached at least one organic group. The modified carbon product can be used for at least one compo...
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WO/2001/025509A1 |
The invention relates to a titanium-based anode in the form of a plate of porous titanium with a thickness of 3 mm and more and a porosity of 5 to 45 %.
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WO/2001/025508A1 |
The invention relates to a method for electrochemically producing peroxopyrosulphuric acid and peroxodisulfates, whereby an electrode which, preferably, is not completely prepolarized and which has been provided with a doped diamond laye...
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WO/2001/023090A1 |
The invention relates to a catalytically active nickel- and/or cobalt containing layer, a method for the production of said layer in addition to the use of a catalytically active nickel- and/or cobalt-containing layer.
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WO/2001/023644A1 |
A water-electrolysis-device-use electrode plate which is formed from a metal plate having a press-formable thickness, and which comprises a flat plate portion, and a peripheral edge portion position on the outer side of the plate portion...
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WO/2001/021858A1 |
The invention relates to a method for electrolytically converting at least one organic compound in an electrolysis cell, whereby the organic compound is both oxidised and reduced at one electrode.
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WO/2001/021857A1 |
The invention relates to electrolytic conversion of at least one furane derivative (A) in an electrolytic circuit, comprising steps (i) and (ii): (i) electrolytic oxidation of furane or a substituted furane or a mixture of two or more of...
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WO/2001/014615A1 |
The invention relates to a cathode comprising an electroconductive substrate consisting of an element chosen from the following: titanium, nickel, tantalum, zirconium, nobium, iron and their alloys; and coated with an intermediate layer ...
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WO/2001/002626A1 |
An electrode comprises an elongate hollow tube (5) made of porous titanium suboxide the inside wall of which is contacted at spaced apart locations by an electrical conductor (11, 12) so that the current is substantially uniformly distri...
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WO/2001/000905A1 |
A method of producing copper foil, and more particularly, in an electrochemical cell containing organic substituents, is provided herein. The metal may be deposited on an electrode that comprises an electrode base having at least one und...
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WO/2000/076621A1 |
Materials and methods for making and using magnetically enhanced composite materials are provided. Surfaces coated with compositions can be used to improve fuel cells, material separators, and other applications. A variety of devices can...
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