| 摘要 |
Inert cathodes, provided with a catalytically effective thin surface coating, enabling oxygen reduction are suitable for fuel cells. In the presence of methanol as a fuel, the semiconducting transition metal chalcogenides are selective but the activity of a low coating is not sufficient for the material in powder or thin layer form. The inventive inert cathodes possess the desired catalytic and selective properties. Their thin surface coating comprises colloidally dispersed homogenously distributed clusters and its production requires only a minimal amount of material in the nanogram range for a low coverage rate with a highly selective and catalytic degree of action. The coating is obtained by immersion in a colloid containing the cluster mixture and a stabilizer in a solvent.The solvent and stabilizer are removed by temperature treatment after application of the colloid. |
