Evonik Degussa Gmbh

Evonik Operations Gmbh

Evonik Industries Ag

Jens Busse

Sascha Hoch

Patrik Stenner

Mareike Giesseler

Thorsten Schultz

Magdalena Kern

Horst-Werner Zanthoff

Rüdiger Schütte

Ann-Kathrin Herr

Hanna Hahn

Matthias Blug

Wolfgang Deis

Bernhard Kaiser

Wolfram Jaegermann

Wolfram Calvet

Zeljko Rajic

Paw V Mortensen

Ali Asghar Enkeshafi

Magdalena Gellner

Sacha Hoch

Ann-Kathrin KRÄMER

A method can produce a thermoelectric component or at least a semifinished version of the thermoelectric component. The method includes: a) providing a substantially planar substrate; b) providing a pulverulent thermoelectrically active material; c) pressing the active material to form green bodies; d) inserting green bodies into through-holes of the substrate; e) arranging the substrate with the green bodies inserted therein between two substantially planar electrodes; f) contacting face ends of the green bodies with the electrodes; g) exposing the green bodies to an electric current flowing between the electrodes; h) exposing the green bodies to a pressure force acting between the electrodes; i) sintering the green bodies to form thermolegs; and k) levelling the substrate and the thermolegs accommodated therein by bringing them closer to the electrodes while maintaining the parallelity thereof.

Rational method for the powder metallurgical production of thermoelectric components

The invention relates to a photoelectrochemical cellfor light-driven production of hydrogen and oxygen, especially from water or another electrolyte based on aqueous solution, having a photoelectric layer structureand an electrochemical layer structurein a layer construction, where&#x2014;the photoelectric layer structurefor absorption of lightuninfluenced by the electrolyteforms a front sideof the layer structure, and&#x2014;the electrochemical layer structure, for accommodation of the electrolyte, forms a reverse sideof the layer construction, and&#x2014;a conductive and corrosion-inhibiting coupling layerforms electrical contact between the photoelectric layer structureand the electrochemical layer structurein the layer construction, where&#x2014;the electrochemical layer structurehas an electrode structure of a front electrodeand an electrode structure of a rear electrode, between which is arranged an ion exchange layersuch that an integrated layer constructionis formed with the ion exchange layerin contact with the electrode structure of the front electrodeformed for conversion of the electrolyteand/or with the electrode structure of the rear electrode

Photoelectrochemical cell, system and process for light-driven production of hydrogen and oxygen with a photoelectrochemical cell, and process for producing the photoelectrochemical cell

The invention relates to a method for producing a thermoelectric component or at least one semi-finished product of same, in which a multiplicity of thermolegs made of a thermoelectrically active material are introduced into an essentially planar substrate made of an electrically and thermally insulating substrate material such that the thermolegs extend through the substrate essentially perpendicular to the substrate plane, and in which the active material is provided in pulverulent form, is pressed to give green bodies and is then sintered within the substrate to give thermolegs. It is based on the object of refining the method of the generic type mentioned in the introduction so as to increase the freedom of choice of the thermally and electrically insulating substrate material. The object is achieved in that the pulverulent active material is pressed, in a mould arranged outside the substrate, to give green bodies, the green bodies are pushed out of the mould and into holes provided in the substrate, where they are sintered to give thermolegs.

Method for producing thermoelectric components by powder metallurgy

The invention relates to a method for producing a thermoelectric component or at least a semifinished version thereof, in which at least one thermoelectric active material in dry powder form is introduced into at least some of the holes of a perforated template. It addresses the problem of specifying a method which can be conducted in a particularly economically viable manner. The problem is solved by virtue of the active material remaining in the holes of the template, and the template filled with active material becoming a constituent of the thermoelectric component produced.

Powder metallurgical production of a thermoelectric component

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Bochum, Germany

Jens Busse