Aspects of Metal-YSZ Electrode Kinetics Studied using Model Electrodes

    Research output: Contribution to journalConference articleResearchpeer-review

    326 Downloads (Pure)

    Abstract

    The electrode kinetics of oxidation and reduction of H2/H2O and CO/CO2 at the metal/yttria stabilized zirconia (YSZ) interface were studied using model metal wire electrodes contacting polished YSZ pellets. The intent was to probe the reaction mechanisms by comparing the same reactions using different metals (Ag, Au, Cu, Ni, Pd, and Pt) under identical conditions relevant to fuel cell and electrolysis cell operation (e.g. including 50% H2/H2O and 50% CO/CO2). Impedance spectra were measured at open-circuit voltage and under polarization, and polarization sweeps were performed. The gas composition and temperature were varied to examine how the electrochemical measurements varied, to facilitate identifying the electrode rate-limiting processes. Possible mechanisms that may explain these and other details are discussed.
    Original languageEnglish
    JournalE C S Transactions
    Volume25
    Issue number2
    Pages (from-to)1945-1955
    ISSN1938-5862
    DOIs
    Publication statusPublished - 2009
    Event216th ECS Meeting: 11th International Symposium B10 - Solid Oxide Fuel Cells - Vienna, Austria
    Duration: 4 Oct 20099 Oct 2009
    Conference number: 216
    http://www.electrochem.org/meetings/biannual/216/216.htm

    Conference

    Conference216th ECS Meeting
    Number216
    CountryAustria
    CityVienna
    Period04/10/200909/10/2009
    Internet address

    Bibliographical note

    Copyright The Electrochemical Society, Inc. [2009]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

    Keywords

    • Solid Oxide Fuel Cells
    • Fuel Cells and hydrogen

    Fingerprint Dive into the research topics of 'Aspects of Metal-YSZ Electrode Kinetics Studied using Model Electrodes'. Together they form a unique fingerprint.

    Cite this