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

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

    Research output: Contribution to journalArticle

    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% H2/Ar. A total conductivity of 6.0–19 mS/cm in the temperature range of 150–250 °C has been achieved. The conductivity (about 19 mS/cm) is stable in humidified 5% H2/Ar during ageing at 175 °C for over 100 h. This material is a potential electrolyte for intermediate temperature fuel cells and other electrochemical devices.

    Research Highlights
    ► Proton conductivity of NH4PO3-glass composite has been investigated. ► Proton conductivity is stable in humidified 5%H2/Ar at 175 °C for over 100 h. ► The proton conduction of NH4PO3-glass composite is due to the acid from decomposition of NH4PO3. ► NH4PO3-glass composite is a potential electrolyte for intermediate temperature fuel cells.

    Original languageEnglish
    Pages (from-to)108-112
    Number of pages5
    JournalSolid State Ionics
    Volume192
    Issue number1
    Early online date21 Dec 2010
    DOIs
    Publication statusPublished - 16 Jun 2011

    Keywords

    • Proton conductor
    • Conductivity
    • NH4PO3

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