Abstract: The invention relates to a method of attaching a gasket (4) to a bipolar plate (12). The method comprises the steps of applying and aligning a first gasket foil (4a) to a second gasket foil (4b) having connection recesses (8), connecting the first gasket foil (4a) to the second gasket foil (4b), so that the gasket (4) is formed, placing the gasket (4) on the bipolar plate (12) so that the second gasket film (4b) with the bonding recesses (8) abuts the bipolar plate (12) and performing an embossing step in which an embossing force is applied with an embossing tool (20) in the region of the connecting recesses (8) so that an embossed adhesive point (24) is formed and the first gasket foil (4a) is bonded to the bipolar plate (12) via an adhesive means (16) arranged in the connecting recess (8) on the first gasket foil (4a).

Abstract: A cell stack includes a plurality of single cells, wherein each single cell includes a membrane electrode assembly having a cathode, an anode, an interposed membrane, and an anode gas diffusion layer wherein a) in a single cell, the anode gas diffusion layer and a cathode gas diffusion layer are arranged in relation to one another such that a first thickness gradient of the anode gas diffusion layer and a second thickness gradient of the cathode gas diffusion layer run opposite to one another or b) in two or more single cells, the anode gas diffusion layers are arranged in relation to one another such that an overall thickness gradient of the anode gas diffusion layers is minimized and/or wherein in two or more single cells, the cathode gas diffusion layers are arranged such that an overall thickness gradient of the cathode gas diffusion layers is minimized.

Abstract: The invention provides a catalyst for removing carbon monoxide from a reformate gas. The catalyst is characterized in that it contains gold and ruthenium in a ratio by weight between 5:1 and 1:5 on a support material of aluminum oxide, titanium oxide, zirconium oxide, cerium oxide, lanthanum oxide and mixtures or mixed oxides thereof.

Abstract: A catalyst is disclosed for the steam reforming of alcohols, which contains a palladium/zinc alloy and zinc oxide as catalytically active components. The alloy catalyst is a catalytically active component deposited on at least one support material which can be aluminum oxide, aluminum silicate, titanium oxide, zirconium oxide, zeoliths and mixtures or mixed oxides thereof.