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Method of detecting defects in ion exchange membranes of electrochemical cells by chemochromic sensors

United States Patent

January 5, 2016
View the Complete Patent at the US Patent & Trademark Office
A method of detecting defects in membranes such as ion exchange membranes of electrochemical cells. The electrochemical cell includes an assembly having an anode side and a cathode side with the ion exchange membrane in between. In a configuration step a chemochromic sensor is placed above the cathode and flow isolation hardware lateral to the ion exchange membrane which prevents a flow of hydrogen (H.sub.2) between the cathode and anode side. The anode side is exposed to a first reactant fluid including hydrogen. The chemochromic sensor is examined after the exposing for a color change. A color change evidences the ion exchange membrane has at least one defect that permits H.sub.2 transmission therethrough.
Brooker; Robert Paul (Melbourne, FL), Mohajeri; Nahid (Rockledge, FL)
University of Central Florida Research Foundation, Inc. (Orlando, FL)
13/ 594,163
August 24, 2012
U.S. GOVERNMENT RIGHTS This invention was made with U.S. Government support under Florida Hydrogen Initiative contract #DEFC3604GO14225 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.