An SOFC anode model using TPB-based kinetics

A. N. Tabish*, H. C. Patel, P. Chundru, J. N. Stam, P. V. Aravind

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)


Fundamental studies focusing on the electrode kinetics are essential in understanding the fuel cell operation and optimizing the electrode designs. In this study, we determined the triple-phase boundary (TPB)-based kinetics of hydrogen electrochemical oxidation using nickel patterned electrode experimental data and the Butler-Volmer formalism of the oxidation process. The same kinetics are then incorporated in a cermet electrode electrochemical model to estimate the effective TPB density of the nickel/yittrium-stabilized zirconia cermet anode. The kinetics are found to be of the same order of magnitude as previously determined by the microstructure reconstruction of cermet anode. Simulation results further revealed that the effective TPB density is several orders of magnitude lower than the typically reported physical densities of the cermet anode that possibly suggests that only a minor fraction of the physical TPB is actually required or available to produce the cell current at given cell voltage. The effect of various operating conditions on the anode activation overpotential is also investigated and discussed in this study.

Original languageEnglish
Pages (from-to)27563-27574
JournalInternational Journal of Hydrogen Energy
Issue number51
Publication statusPublished - 2020


  • Butler-volmer formalism
  • Effective TPB density
  • Pattern anode
  • SOFC
  • TPB-based kinetics

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