@article{30554,
  keywords = {modeling, diagnostics, pefc},
  author = {Lalit M Pant and Zhiwei Yang and Michael L Perry and Adam Z Weber},
  title = {Development of a Simple and Rapid Diagnostic Method for Polymer-Electrolyte Fuel Cells},
  abstract = {<p>A simple and fast diagnostic tool has been developed for analyzing polymer-electrolyte fuel-cell degradation. The tool is based on analyzing changes in polarization curves of a cell over its lifetime. The shape of the polarization-change curve and its sensitivity to oxygen concentration are found to be unique for each degradation pathway based on analysis from a detailed 2-D numerical model of the cell. Using the polarization-change curve methodology, the primary mechanism for degradation (kinetic, ohmic, and/or transport related) can be identified. The technique is applied to two sets of data to explain performance changes after two different cells undergo voltage-cycling accelerated stress test, where it is found that changes are kinetic and then ohmic or transport in nature depending on the cell type. The diagnostic tool provides a simple method for rapid determination of primary degradation mechanisms. Areas for more detailed future investigations are also summarized.</p>},
  year = {2018},
  journal = {Journal of The Electrochemical Society},
  volume = {165},
  pages = {F3007 - F3014},
  month = {01/2018},
  issn = {0013-4651},
  doi = {10.1149/2.0011806jes},
  language = {eng},
}