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Electrochemical and Microstructure Characterization of (Ni0.5Co0.5)-MgO-TiO2-YSZ Cermet Anode
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The Ni0.5Co0.5-MgO-TiO2-(8 mol%Y2O3-ZrO2) (NCMTO-YSZ) cermet anode showed a higher cell performance than NiO-YSZ and Ni0.5Co0.5O-YSZ cermet anodes under dry CH4 fuel, while the cell performance between Ni0.5Co0.5O-YSZ and NCMTO-YSZ cermet anodes were not significantly different under H2 fuel. NCMTO-YSZ decreased the anodic overvoltage and polarization resistance because Ni0.5Co0.5-MgO solid solution existing in the cermet anode contributes to increase active sites for the electrochemical oxidation of methane. The enhancement of the direct methane oxidation was caused by the microstructure improvement owing to MgO and a small amount of TiO2 solid solution.
The Electrochemical Society
Title: Electrochemical and Microstructure Characterization of (Ni0.5Co0.5)-MgO-TiO2-YSZ Cermet Anode
Description:
The Ni0.
5Co0.
5-MgO-TiO2-(8 mol%Y2O3-ZrO2) (NCMTO-YSZ) cermet anode showed a higher cell performance than NiO-YSZ and Ni0.
5Co0.
5O-YSZ cermet anodes under dry CH4 fuel, while the cell performance between Ni0.
5Co0.
5O-YSZ and NCMTO-YSZ cermet anodes were not significantly different under H2 fuel.
NCMTO-YSZ decreased the anodic overvoltage and polarization resistance because Ni0.
5Co0.
5-MgO solid solution existing in the cermet anode contributes to increase active sites for the electrochemical oxidation of methane.
The enhancement of the direct methane oxidation was caused by the microstructure improvement owing to MgO and a small amount of TiO2 solid solution.
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