NANOPARTICLES PROLONG FUEL CELL LIFE

The membrane is subjected to high humidity, when the hydrogen and oxygen of a fuel cell combine to produce water. When the cell is not used, the membrane dries and is damaged by the constant shifts between high and low humidity. Scientists have developed a material for the catalyst that is located on the external side of the membrane. It consists of tungsten carbide nanoparticles, which keep the humidity level around the membrane constant, prolonging its life. The material only costs about DKK 900/kg, whereas 1 kg of platinum costs some DKK 190,000.