Abstract
Bismuth ruthenate pyrochlore (Bi2Ru2O7: BRO) was tested as a
cathode in several bismuth oxide-based electrolyte cells. Erbium
oxide stabilized bismuth oxide (ESB) (Bi2O3)0.8 (Er2O3)0.2,
Bi2V0.9Me0.1O5.35 (BIMEVOX10, Me = Co, Cu, Zn), and Bi2Ru2O7
(BRO) were synthesized via solid state reaction. ESB and
BIMEVOX powders were pressed and sintered into dense pellets
while BRO was deposited and sintered as porous electrodes onto
ESB and BIMEVOX dense pellet surfaces. Morphologies and
phases of the materials were characterized by Field Emission
Scanning Electron Microscope and x-ray diffraction, respectively.
Electrochemical performances of BRO/ESB and BRO/BIMEVOX
symmetric cells were tested using Electrochemical Impedance
Spectroscopy (EIS) at 200-700 °C in air. High polarization for
BIMEVOX cells was observed, while ESB cells showed a
promising behaviour. Different electrochemical performances of
BRO electrodes, with ESB or BIMEVOX, indicated that the
phases formed at electrodes/electrolyte interface controlled the cell
polarization process.
Original language | English |
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Journal | E C S Transactions |
Volume | 1 |
Issue number | 7 |
Pages (from-to) | 263-277 |
ISSN | 1938-5862 |
DOIs | |
Publication status | Published - 2006 |
Externally published | Yes |
Event | 208th ECS Meeting - Los Angeles, California, United States Duration: 16 Oct 2005 → 21 Oct 2005 |
Conference
Conference | 208th ECS Meeting |
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Country/Territory | United States |
City | Los Angeles, California |
Period | 16/10/2005 → 21/10/2005 |