Henkel Kommanditgesellschaft Auf Aktien

Bayer Materialscience Ag

Forschungszentrum Julich Gmbh

Henkel Kommanditgesellschaft Auf Aktien (henkel Kgaa)

Universität Des Saarlandes

Prof. Dr. Rolf Hempelmann

Elcomax Gmbh

Cfso Gmbh

Solvicore Gmbh & Co Kg

Rolf Hempelmann

Andreas Bulan

Rainer Weber

Marco Lopez

Harald Natter

Hans-Martin Sauer

Stefan Spiekermann

Elisabeth Cura

Sohaib Elgimiabi

Frank Meyer

Jürgen Kintrup

Jiri Divisek

Manfred Stefener

Heinz Schmitz

Ruiyong Chen

March-Simon Löffler

Vinh Trieu

Vivien Annel

Jens Mitzel

Vivien Keller

A process for the electrochemical deposition of nanoscale catalyst particles using a sacrificial hydrogen anode as counter electrode for the working electrode is disclosed, whereby a concurrent development of hydrogen at the working electrode is mostly or completely avoided.

Electrochemical deposition of nanoscale catalyst particles

The present invention relates to an electrode that includes an electrically conducting substrate based on a valve metal having a main proportion of titanium, tantalum or niobium, and an electrocatalytically active coating comprising up to 50 mol % of a noble metal oxide or noble metal oxide mixture and at least 50 mol % of titanium oxide. The coating includes a minimum proportion of oxides of anatase structure determined by a ratio of the signal height of the most intensive anatase reflection in an x-ray diffractogram (Curadiation) after subtraction of a linear background to the signal height of the most intensive rutile reflection in the same diffractogram, wherein the ratio is at least 0.6.

Electrode for electrolytic production of chlorine

The invention relates to nanoparticulate preparations containing at least one mixed metal oxide in the form of supramagnetic, nanoscale particles, methods for heating such a preparation, and methods for producing and dissolving adhesive compounds on the basis of said preparations.

Nanoparticulate preparation

The invention relates to nanoparticulate preparations containing at least one mixed metal oxide in the form of supramagnetic, nanoscale particles, methods for heating such a preparation, and methods for producing and dissolving adhesive compounds of the basis of said preparations.

The invention relates to a method for deposition of a catalyst, in particular a method for coating a membrane electrode unit (MEA) for a fuel cell. Said method requires no external electrical field as usual for conventional galvanic techniques. The support for the catalytic layer is first capacitively charged (pseudocapacitance). When brought into contact with an electrolyte solution, comprising the catalyst in the form of dissolved metal salt ions, an in-situ reduction (deposition) of the metal salt ions to give metallic catalyst occurs at the site of contact.

Method for deposition of a catalyst

Amorphous and/or crystalline oxides of metals of the third to fifth main group or subgroups of the periodic table are obtained in particulate form by an electrochemical process. The process is characterized in that ions of the metal dissolved in an organic electrolyte are electrochemically reduced on a cathode in the presence of an oxidizing agent.

Electrochemical production of amorphous or crystalline metal oxides with particles sizes in the nanometer range

Growing community of inventors

St. Ingbert, Germany

Rolf Hempelmann