Maximization of quadruple phase boundary for alkaline membrane fuel cell using non-stoichiometric Α-MnO 2 as cathode catalyst

X. Shi, S. Ahmad, K. Pérez-Salcedo, B. Escobar, H. Zheng, Arunachala Mada Kannan

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Oxygen can only be reduced at the quadruple phase boundary (catalyst, carbon support, ionomer and oxygen) of the cathode catalyst layer with non-conducting electrocatalyst. To maximize the quadruple phase boundary sites is crucial to increase the peak power density of each membrane electrode assembly. The quadruple phase boundary is depending on the ratio of catalyst, carbon support and ionomer. The loading of catalyst layer is also crucial to the fuel cell performance. In this study, non-stoichiometric α-MnO 2 manganese dioxide nanorod material has been synthesized and the ratios of carbon, ionomer and catalyst loadings were optimized in alkaline membrane fuel cell. In total, ten membrane electrode assemblies have been manufactured and tested. Taguchi design method has been applied in order to understand the effect of each parameter. The conclusion finds out the ionomer has more influence on the alkaline membrane fuel cell peak power performance than carbon and loading.

Original languageEnglish (US)
Pages (from-to)1166-1173
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume44
Issue number2
DOIs
StatePublished - Jan 8 2019

Keywords

  • Alkaline membrane fuel cell
  • Oxygen reduction reaction
  • Quadruple phase boundary optimization
  • α-MnO nanorods

ASJC Scopus subject areas

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

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