Forschungszentrum Julich Gmbh

Other

Prof. Dr. Rolf Hempelmann

Forschungszentrum Juelich Gmbh

Jiri Divisek

Volkmar M Schmidt

Rolf Hempelmann

Harald Natter

Ulrich Stimming

Heinz Schmitz

March-Simon Löffler

Hans-Friedrich Oetjen

Hans-F Oetjen

Ernst Riensche

Lambertus Gj De Haart

The invention relates to a fuel cell, in particular a methanol fuel cell which has an anion-conductive membrane. The protons required for the formation of hydroxyl ions are supplied to the cathode chamber in the form of water. The water resulting from the reaction is produced at the anode. The method requires the use of alkaline media both in the anode chamber and in the cathode chamber.

Alkaline direct methanol fuel cell

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

The invention relates to a methanol fuel cell comprising a membrane which conducts metallic cations, in which the metallic cations induce the transport of the charge inside the membrane and are advantageously guided in a circuit in the form of a base from the cathode chamber to the anode chamber. The inventive methanol fuel cell prevents the methanol drag associated with proton-conductive membranes, thus producing higher power outputs on a regular basis. A separate transport of the water produced by the reaction is not necessary.

Methanol fuel cell comprising a membrane which conducts metal cations

In a method for the manufacture of an electrode-electrolyte unit with a catalytically active layer a metal salt solution is placed layer-like between an electrolyte layer and an electrolyte and the metal in the metal salt solution is precipitated from the metal salt in situ between the two layers.

Method of producing electrolyte units by electrolytic deposition of a catalyst

In a method and an apparatus for processing fuel for a fuel cell to which fuel is supplied through a fuel line, a reactor is disposed in the fuel line and an oxygen-containing compound is added to the fuel in the fuel line and is decomposed in the reactor for releasing oxygen which oxygen is adsorbed by the reactor. Impurities in the fuel which can be oxidized are also adsorbed by the reactor and are oxidized by the oxygen adsorbed by the reactor.

Fuel cell apparatus and method of increasing the power density of fuel

In an anode structure for a high temperature fuel cell which has a non-catalytic phase and a catalytic phase with respect to methane-vapor reforming reactions, a substrate with a bi-polar plate disposed thereon has areas of different catalytic activity levels, that is, an area in which the regular catalytic metallic phase has been replaced by a catalytic metallic phase with low catalytic activity whereby the methane vapor reforming reaction is delayed in the areas of reduced catalyst activity.

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Jülich, Germany

Jiri Divisek