Electrochemical Investigation of Oxygen, Metal/ZrO2 Interface

Journal of Inorganic Materials

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Electrochemical Investigation of Oxygen, Metal/ZrO₂ Interface

LI Qi; SUN Cheng-Wen; WANG Ping-Chu; YANG Zhi-Zhou

Shanghai Institute of Cernmics; Chinese Academy of Sciences Shanghai 200050 China

Received:1997-04-30 Revised:1997-06-05 Published:1998-06-20 Online:1998-06-20

Abstract

Abstract: A-C Impedance spectroscopy and steady-state D-C polarization have been investigated tocompare oxygen diffusion on Pt, An, Ag, Ag-Pd four pasted electrodes and electrochemical reactionrate from 200℃ to 600℃. Electrode interface impedance has been calculated in the temperaturerange of 350-600℃. Experiments confirm the relationship of the exchange current density I_o asa function of oxygen partial pressure P^0.67±0.1_O2

Key words: O₂, metal/YSZ interface, oxygen diffusion, electrochemical reaction rate, electrode interface resistance

CLC Number:

TN304

LI Qi,SUN Cheng-Wen,WANG Ping-Chu,YANG Zhi-Zhou. Electrochemical Investigation of Oxygen, Metal/ZrO₂ Interface[J]. Journal of Inorganic Materials.

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Electrochemical Investigation of Oxygen, Metal/ZrO₂ Interface

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