An in-situ probe for investigating PEM degradation kinetics and degradation mitigation

Venkateshkumar Prabhakaran, Christopher G. Arges, Vijay Ramani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations


This study demonstrates a method wherein a fluorescent molecular probe (6-carboxy fluorescein) is 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 free radical scavengers (FRS), CeO 2 nanoparticles, into the PEM. This paper discusses the requirements for the use of a molecular probe for in-situ monitoring of ROS and the probe's compatibility with components found in the fuel cell.

Original languageEnglish (US)
Title of host publicationPolymer Electrolyte Fuel Cells 11
Number of pages11
StatePublished - 2011
Event11th Polymer Electrolyte Fuel Cell Symposium, PEFC 11 - 220th ECS Meeting - Boston, MA, United States
Duration: Oct 9 2011Oct 14 2011

Publication series

NameECS Transactions
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737


Other11th Polymer Electrolyte Fuel Cell Symposium, PEFC 11 - 220th ECS Meeting
Country/TerritoryUnited States
CityBoston, MA

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this