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

Patent ·
OSTI ID:1234688

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.

Research Organization:
University of Central Florida Research Foundation, Inc., Orlando, FL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC36-04GO14225
Assignee:
University of Central Florida Research Foundation, Inc. (Orlando, FL)
Patent Number(s):
9,228,954
Application Number:
13/594,163
OSTI ID:
1234688
Resource Relation:
Patent File Date: 2012 Aug 24
Country of Publication:
United States
Language:
English

References (7)

Method and apparatus for detecting transfer leaks in fuel cells patent November 2002
Hydrogen gas indicator system patent May 2005
Photo-oxidation catalysts patent July 2009
Visual hydrogen detector with variable reversibility patent August 2011
Doped palladium containing oxidation catalysts patent February 2014
Gas permeable chemochromic compositions for hydrogen sensing patent-application September 2007
Precious Metal Oxide Catalyst for Water Electrolysis patent-application October 2014

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