METHANOL FUEL CELLS

摘要

The present invention relates to direct and reformate methanol fuel cells containing an anode comprising semiconductor layers. A semiconductor layer, preferably silicon or silicon carbide, is overlaid with a TiO<SUB>2</SUB> layer. An open metal over-layer, preferably platinum optionally applied over a layer of inert metal such as gold, is deposited on the TiO<SUB>2</SUB> layer, optionally in the form of a grid. It has been found that the active OH species generated in the presence and absence of light irradiation at the TiO<SUB>2</SUB> surface in this device eliminates the need for ruthenium to be present. Furthermore, studies have unexpectedly shown that an electric field applied via an electrode on the surface of the TiO<SUB>2</SUB> appears not to be required for the benefits to occur. This invention is thought to be particularly applicable to micro fuel cells.