A stable NH4PO3-glass proton conductor for intermediate temperature fuel cells

Yinzhu Jiang, Teci Matthieu, Rong Lan, Xiaoxiang Xu, Peter Ian Cowin, Shanwen Tao

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9 Citations (Scopus)

Abstract

A stable and conductive composite material based on NH4PO3 and amorphous oxides (SiO2-P2O5) has been prepared by a wet-chemical route following with firing in ammonia. The composite showed high proton conductivity in both ambient air and humidified 5% H-2/Ar. A total conductivity of 6.0-19 mS/cm in the temperature range of 150-250 degrees C has been achieved. The conductivity (about 19 mS/cm) is stable in humidified 5% H-2/Ar during ageing at 175 degrees C for over 100 h. This material is a potential electrolyte for intermediate temperature fuel cells and other electrochemical devices.

Original languageEnglish
Pages (from-to)108-112
Number of pages5
JournalSolid State Ionics
Volume192
Issue number1
DOIs
Publication statusPublished - 16 Jun 2011

Keywords

  • Proton conductor
  • Conductivity
  • NH4PO3
  • electrolyte
  • composite
  • polyphosphate
  • stability
  • behaviour
  • acidity
  • CSH2PO4
  • silica
  • IR

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    Jiang, Y., Matthieu, T., Lan, R., Xu, X., Cowin, P. I., & Tao, S. (2011). A stable NH4PO3-glass proton conductor for intermediate temperature fuel cells. Solid State Ionics , 192(1), 108-112. https://doi.org/10.1016/j.ssi.2010.11.028