| abstract |
The present invention comprises the steps of (a) preparing a powder mixture consisting of at least one polymer as a binder and a catalytically active component, (b) applying the powder mixture to an electrically conductive sheet-like support element, and (c) a support element using a roller. Compacting and compacting the powder mixture in a phase, wherein the roller used in the compacting step c) comprises a surface coating of tungsten carbide, the roller surface having a roughness of 0.5 μm or less. It is about. |