A high performance intermediate temperature fuel cell based on a thick oxide–carbonate electrolyte

Lei Zhang, Rong Lan, Xiaoxiang Xu, Shanwen Tao, Yinzhu Jiang, Arno Kraft

    Research output: Contribution to journalArticle

    41 Citations (Scopus)

    Abstract

    A high performance intermediate temperature fuel cell (ITFC) with composite electrolyte composed of co-doped ceria Ce0.8Gd0.05Y0.15O1.9 (GYDC) and a binary carbonate-based (52 mol% Li2CO3/48 mol% Na2CO3), 1.2 mm thick electrolyte layer has been developed. Co-doped Ce0.8Gd0.05Y0.15O1.9 was synthesized by a glycine–nitrate process and used as solid support matrix for the composite electrolyte. The conductivity of both composite electrolyte and GYDC supporting substrate were measured by AC impedance spectroscopy. It showed a sharp conductivity jump at about 500 °C when the carbonates melted. Single cells with thick electrolyte layer were fabricated by a dry-pressing technique using NiO as anode and Ba0.5Sr0.5Co0.8Fe0.2O3−δ or lithiated NiO as cathode. The cell was tested at 450–550 °C using hydrogen as the fuel and air as the oxidant. Excellent performance with high power density of 670 mW cm−2 at 550 °C was achieved for a 1.2 mm thick composite electrolyte containing 40 wt% carbonates which is much higher than that of a cell based on pure GYDC with a 70 μm thick electrolyte layer.
    Original languageEnglish
    Pages (from-to)967-971
    Number of pages5
    JournalJournal of Power Sources
    Volume194
    Issue number2
    Early online date25 Jun 2009
    DOIs
    Publication statusPublished - 1 Dec 2009

    Fingerprint

    Electrolytes
    fuel cells
    Fuel cells
    electrolytes
    Carbonates
    carbonates
    composite materials
    Composite materials
    Temperature
    temperature
    cells
    conductivity
    Cerium compounds
    pressing
    Oxidants
    radiant flux density
    Hydrogen
    alternating current
    Anodes
    Cathodes

    Keywords

    • Intermediate temperature
    • Fuel cell
    • Co-doped ceria
    • Composite electrolyte

    Cite this

    A high performance intermediate temperature fuel cell based on a thick oxide–carbonate electrolyte. / Zhang, Lei; Lan, Rong; Xu, Xiaoxiang; Tao, Shanwen ; Jiang, Yinzhu ; Kraft, Arno.

    In: Journal of Power Sources, Vol. 194, No. 2, 01.12.2009, p. 967-971.

    Research output: Contribution to journalArticle

    Zhang, Lei ; Lan, Rong ; Xu, Xiaoxiang ; Tao, Shanwen ; Jiang, Yinzhu ; Kraft, Arno. / A high performance intermediate temperature fuel cell based on a thick oxide–carbonate electrolyte. In: Journal of Power Sources. 2009 ; Vol. 194, No. 2. pp. 967-971.
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