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Journal of Applied Electrochemistry

, Volume 44, Issue 9, pp 1037–1045 | Cite as

CsHSO4 as proton conductor for high-temperature polymer electrolyte membrane fuel cells

  • Olivia Barron
  • Huaneng Su
  • Vladimir Linkov
  • Bruno G. Pollet
  • Sivakumar Pasupathi
Research Article
Part of the following topical collections:
  1. Fuel cells

Abstract

The influence of CsHSO4 inorganic solid acid was evaluated as a possible proton conductor in the catalyst layer of ABPBI (poly(2,5-benzimidazole))-based high-temperature polymer electrolyte membrane fuel cells (HT-PEMFCs). Gas diffusion electrodes (GDEs) were prepared with fixed polytetrafluoroethylene (PTFE) and polyvinylidene diflouride (PVDF) binder content, while the CsHSO4 loading was varied. Porosimetry data showed that the addition of 10 % CsHSO4 to the PVDF GDE increased the porosity across all the pore regions, whereas the addition of 10 % CsHSO4 to the PTFE GDE decreased the GDEs porosity. The CsHSO4 MEAs showed good proton transfer dynamics and low resistance for fuel cell operation. An optimum loading of 10 % CsHSO4 in conjunction with either of the binders was observed, with CsHSO4–PVDF GDE achieving peak power of 498.2 mW cm−2 at a cell voltage of +352 mV. Higher CsHSO4 loadings increased the charge transfer resistance and lowered the cell performance of these GDEs.

Keywords

High-temperature polymer electrolyte membrane fuel cell Catalyst layer Gas diffusion electrode Poly(2,5-benzimidazole) CsHSO4 

Notes

Acknowledgments

This work is supported by Hydrogen and Fuel Cell Technologies RDI Programme (HySA), funded by the Department of Science and Technology in South Africa, project KP1S01.

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Olivia Barron
    • 1
  • Huaneng Su
    • 1
  • Vladimir Linkov
    • 1
  • Bruno G. Pollet
    • 1
  • Sivakumar Pasupathi
    • 1
  1. 1.HySA Systems Competence Centre, South African Institute for Advanced Materials ChemistryUniversity of the Western CapeBellvilleSouth Africa

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