Uhdenora S.p.a.

Uhde Gmbh

Thyssenkrupp Industrial Solutions Ag

Thyssenkrupp Uhde Chlorine Engineers (italia) S.r.l.

Uhdenora Technologies S.r.l.

Gaskatel Gessellschaft Fuer Gassysteme Durch Katalyse Und Elektrochemie Mbh

Gaskatel Gmbh

Thyssenkrupp Uhde Gmbh

Thyssenkrupp Uhde Chlorine Engineers Gmbh

Thyssenkrupp Uhde Chlorine Engineers S.r.l.

Gaskatel Gesellschaft Für Gassysteme Durch Katalyse Und Elektrochemie Mbh

Thyssenkrupp Nucera Italy Srl

Frank Funck

Peter Woltering

Randolf Kiefer

Dirk Hoormann

Roland Beckmann

Karl-Heinz Dulle

Philipp Hofmann

Karl Heinz Dulle

Gregor Polcyn

Dmitri Donst

Peter Toros

Hans-Joachim Kohnke

Stefan Oelmann

Wolfram Stolp

Thomas Steinmetz

Stephan Köberle

Carsten Schmitt

Kosmas Janowitz

Torsten Dresel

Stephan Koberle

Bernd Langanke

Niels Bredemeyer

Sebastian Austenfeld

Christoph Roosen

Joachim Helmke

Martin Wollny

Ulf-Steffen Baeumer

Frank Holthuis

Jens Wilhelm Kuhlmann

Philip Hofmann

Hans-Joachim Hartz

Jörg Wilfried Kolbe

Ulf-Steffen BÄUMER

Gregor Damian Polcyn

Stephan KÖBERLE

Ulf-Steffen Baumer

Jorg Wilfried Kolbe

Jörg Kolbe

An electrode of an electrolysis cell for gas-producing electrochemical processes, which includes a plurality of horizontal lamella elements which in the manner of a flat C-profile consist of a flat central part and one or more flank parts, where one or more transition regions of any shape are arranged between the flat central part and the one or more flank parts, where the lamella elements have a plurality of through-openings, where the lamella elements have a flat surface without structural raised regions and depressions and the flat central part has a plurality of through-openings which are arranged in rows and arranged diagonally to one another.

Electrode for electrolysis cells

An insulating frame for electrolysis cells is proposed, which has a geometric form with corners, said insulating frame being of a flat design and having an anode and a cathode side as well as an outer and inner end face, the insulating frame being characterized in that it is has an edge area directly adjoining the inner end face, characterized in that in the area of the corners the edge area has corner expansion joints in the form of cut-outs.

Insulating frame with corner expansion joints for electrolysis cells

A method for coating a substrate on one or more sides having catalytically active material producible by material deposition under vacuum in a vacuum chamber, using the following steps: loading a substrate in the chamber evacuating the chamber, cleaning the substrate by introducing a gaseous reducing agent, removing the gaseous reducing agent, applying an intermediate layer by means of vacuum arc evaporation, wherein a substrate comprising the same or similar material is introduced into the vacuum chamber, controlling the chamber temperature, coating by vacuum arc evaporation, a metal taken from the group ruthenium, iridium, titanium and mixtures thereof while oxygen is supplied, in a last step the coated substrate is removed from the chamber, wherein at least 99% of the substrate coating is free of constituents originally contained in the substrate itself, and at least 99% of the coating applied on the intermediate layer is kept free of non-oxidized metals.

Substrate coating on one or more sides

What is proposed is an apparatus for conducting an electrolysis with an oxygen depolarized cathode, comprising: (a) an electrolyzerwhich (b) is connected on the reactant side via an inlet control valveto an oxygen source, and (c) on the product side has at least one off gas line, (d) which has at least one pressure regulator (PT), at least one gas analyzer (QI), at least one flow regulator (FT)and at least one outlet control valve, wherein (e) the pressure regulatorcontrols the inlet control valve, (f) the gas analyzercontrols the flow regulatoror the outlet control valveand/or (g) the flow regulatorcontrols the outlet control valve

Apparatus and method for operating an electrolysis with an oxygen depolarized cathode

Flow type electrochemical cells are disclosed. The electrochemical cell has an anode half-cell, a cathode half-cell, and permeable separating layer. The half-cells are bounded by side elements. Respective porous electrodes are housed in the half-cells. The permeable separating layer is disposed between the anode half-cell and the cathode half-cell. An electrolyte region connected to an electrolyte feed and an electrolyte outflow region connected to an electrolyte drain are further provided. An electrolyte inflow region and an electrolyte outflow region are disposed on opposite sides of the porous electrodes such that inflowing electrolyte flows through the porous electrode perpendicularly to the permeable separating layer.

Flow-type electrochemical cell

The invention relates to a method for producing electrically conducting nickel oxide surfaces made of nickel-containing material. According to the method, the nickel surface is first degreased and is then roughened for approximately ten minutes in a solution containing about one percent of hydrochloric acid, the process being accelerated by adding hydrogen peroxide solution, resulting in the electrolyte turning green. The nickel surface is briefly wetted, the nickel material is introduced into a solution of 3.5 molar lye to which about ten percent of hydrogen peroxide is added and is kept therein for ten minutes, and the resulting nickel hydroxide surface is dehydrated in a subsequent thermal process and is then further oxidized to obtain nickel oxide. The invention further relates to a conductive boundary layer that is produced according to the method, the electrodes therefrom, and the use thereof in chlorine-alkali electrolysis processes, in fuel cells and storage batteries.

Method for the production of nickel oxide surfaces having increase conductivity

Electrolysis cell in the constructive form of single elements, intended for instance for the production of chlorine, hydrogen and/or caustic soda and designed in such a way that the portion of inactive membrane surface is minimised thanks to an optimised flange type so that the ratio between the flange surface of a semi-shell and the active membrane surface can be set to less than 0.045, neither the semi-shells nor the membrane being provided with bores or recesses for accommodating the clamping members.

Electrolysis cell

An electrolytic cell consisting of two semi-shells and encompassing mainly the inlet and outlet devices, components for the flow control, a membrane as well as anode and cathode.

Electrolytic cell with segmented and monolithic electrode design

The invention relates to an electrolysis device for halogen gas production from an aqueous alkali halide solution in several plate-type electrolysis cells stacked and arranged side by side, with electrical contacts, each of the cells with a housing consisting of two half-shells made of electrically conductive material, said housing being equipped with devices for feeding electrolytic current and the electrolysis plant reactants and devices for discharging electrolytic current and discharging the electrolysis products, with anodic electrode, cathodic electrode and a membrane arranged therebetween, built-in components being fitted in at least one of the two half-shells and permitting a defined increase in the liquid level and thus minimizing the remaining gas volume accordingly. The built-in components are arranged in such a manner that they form an internal trough parallel to the said membrane and arranged horizontally, an interspace thus being provided between the trough and the membrane and an interspace between the trough and the electrolysis chamber, a part of which is located above the membrane, said trough having at least one opening communicating with the interspace between said trough and the upper side of the electrolytic chamber, and at least one outlet.

Electrolytic cell comprising an interior trough

With the help of a method for production of a gaseous diffusion electrode from a silver catalyst on PTFE-substrate, it is endeavored to achieve results which can be reproduced, by avoiding the disadvantages of the state-of-the-art technology, whereby this is achieved in that

Method for producing gas diffusion electrodes

Growing community of inventors

Mülheim, Germany

Frank Funck