BEST-EVER POWER DENSITY FOR PORTABLE METHANOL FUEL CELL STACK SHOWN BY POLYFUEL

September 25, 2007

CAPTION: Power density is a measure of the size of a fuel cell stack relative to its power. The higher the power density, the smaller the fuel cell stack can be for a given power level. This stack, developed to a particular customer specification, measures 8.8 by 4.5 by 2.8 cm and produces 56 watts at peak power. To the best of PolyFuel’s knowledge, the stack delivers the highest power density of any portable DMFC stack ever made – over 500 watts/liter. (September 25, 2007)