Abstract
This study has demonstrated that a fluorescent molecular probe (6-carboxy fluorescein) can be used for in-situ, real-time monitoring of the formation of reactive oxygen species (ROS) that are responsible for chemical degradation of the PEM (polymer electrolyte membrane) during fuel cell operation. An example of the method's utility for assessing mitigation of PEM degradation was successfully shown by incorporating a FRS, CeO2 nanoparticles, into the PEM. This work discusses the requirements for the use of a molecular probe for in-situ monitoring of ROS and its compatibility with components found in the fuel cell.
Published Version
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