Abstract: A high throughput screening device for combinatorial chemistry having a plurality of flow channels, wherein a flow channel has a plurality of membrane electrode assemblies, and a switching system that permits a selected membrane electrode assembly in a flow channel to be in a current producing state at any time during operation of the high throughput screening device. This device obtains performance data from each and every array electrode simultaneously and does not require the movement of any electrode during data acquisition. Some application among many possible applications of the device of this invention is in the development and evaluation of catalysts (anode and cathode catalysts) for fuel cells and electrolysis systems. One embodiment of the invention relates to relates to an array fuel cell (FC) that has a multiple inlet gas fed array electrode flow field that permits the evaluation of 25 fuel cell electro-catalyst surfaces simultaneously or in groups.

Abstract: A high throughput screening device for combinatorial chemistry, comprising a membrane electrode assembly, an array of sensor electrodes and one or more common electrodes, wherein a total cross-sectional area of the one or more common electrodes is greater than a sum of the cross-sectional areas of the sensor electrodes is disclosed. This device obtains performance data from each and every array electrode simultaneously and does not require the movement of any electrode during data acquisition. Some application among many possible applications of the device of this invention is in the development and evaluation of catalysts (anode and cathode catalysts) for fuel cells and electrolysis systems. One embodiment of the invention relates to relates to an array fuel cell (FC) that utilizes a counter electrode flow field and a multiple inlet gas fed array electrode flow field that permits the evaluation of 25 fuel cell electro-catalyst surfaces simultaneously or in groups.