Modeling of the mixed potential in hydrogen peroxide-based fuel cells

Liang An, T. S. Zhao, Z. H. Chai, L. Zeng, P. Tan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

26 Citations (Scopus)

Abstract

A one-dimensional mathematical model is developed for the study of the mixed potential associated with the hydrogen peroxide oxidation reaction (HPOR) at the cathode of hydrogen peroxide-based fuel cells. The complicated physicochemical processes, including mass transport, charge transport, and three simultaneous electrochemical reactions (the hydrogen peroxide reduction, hydrogen peroxide oxidation, and oxygen reduction reactions) are considered. The model is experimentally validated and shows good agreement with the literature experimental data. The model is then applied to the study of the mixed potential by varying the current density. It is found that the largest potential loss due to the HPOR occurs under the open-circuit condition (OCC), and the potential loss decreases with the superficial current density. In addition, the numerical results suggest that under the OCC, an increase in the concentrations of hydrogen peroxide and H+ions leads to a decrease in the potential loss, but an increase in the hydrogen peroxide decomposition rate and the oxygen evolution rate.
Original languageEnglish
Pages (from-to)7407-7416
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume39
Issue number14
DOIs
Publication statusPublished - 5 May 2014
Externally publishedYes

Keywords

  • Fuel cell
  • Hydrogen peroxide
  • Mass transport
  • Mathematical modeling
  • Mixed potential
  • Potential loss

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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