Comparison of different types of membrane in alkaline direct ethanol fuel cells

Liang An, T. S. Zhao, Q. X. Wu, L. Zeng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

62 Citations (Scopus)

Abstract

It has been understood that the use of cation-exchange membranes (CEM) and alkali-doped polybenizimidazole membranes (APM) in alkaline direct ethanol fuel cells (DEFC) with an added base in the fuel exhibits performance similar to the use of anion-exchange membranes (AEM). The present work is to assess the suitability of the three types of membrane to alkaline DEFCs by measuring and comparing the membrane properties including the ionic conductivity, the species permeability, as well as the thermal and mechanical properties. The comparison shows that: (i) the AEM is still the most promising membrane for the alkaline DEFC, although the thermal stability needs to be further enhanced; (ii) before solving the problem of the poor thermal stability of AEMs, the CEM is another choice for the alkaline DEFC running at high temperatures (<90 °C); and (iii) the APM can also be applied to the alkaline DEFC operating at high temperatures, but its mechanical property needs to be substantially enhanced and the species permeability needs to be dramatically decreased.
Original languageEnglish
Pages (from-to)14536-14542
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number19
DOIs
Publication statusPublished - 1 Oct 2012
Externally publishedYes

Keywords

  • Alkaline direct ethanol fuel cell
  • Fuel cell
  • Ion exchange membrane
  • Ionic conductivity

ASJC Scopus subject areas

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

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