Patent ID: 8083913

Claim:
An electrochemical cell comprising a plurality of samples of material for testing electrocatalytic behavior of a plurality of materials, said cell comprising: a first electrode bearing the plurality of samples of material to be tested; a counter-electrode bearing an electrochromic material whose reflection, refraction or absorption of electromagnetic energy changes in a manner proportional to the total charge passed through it; and an electrolyte between and in electrical contact with the first electrode and the counter-electrode; wherein said first electrode comprises a plurality of regions, each region bearing a sample of material to be tested, the regions being electrically connected to a common terminal, and wherein the sample of material to be tested is an electrocatalyst, and the electrolyte contains the material whose reaction is to be catalyzed by said electrocatalyst, wherein said reaction changes the total charge passing through the counter-electrode bearing the electrochromic material, and the changes in reflection, refraction or absorption of electromagnetic energy of the electrochromic material with respect to each region of electrocatalyst is indicative of the electrocatalytic activity of each sample of the electrocatalyst on said first electrode on the reaction of the material to be catalyzed by the electrocatalyst of the electrolyte.