TY - JOUR
T1 - Effect of mechanical stress on oxygen potential of transition metal oxides
AU - Gonoi, Yuki
AU - Kimura, Yuta
AU - Yashiro, Keiji
AU - Watanabe, Satoshi
AU - Hashimoto, Shin Ichi
AU - Kawada, Tatsuya
N1 - Publisher Copyright:
© 2014 The Electrochemical Society.
PY - 2014
Y1 - 2014
N2 - By applying a mechanical load, a transient shift of oxygen potential was observed on (La,Sr)CoO3 and (La,Sr)FeO3. The theoretical relationship between mechanical stress and oxygen potential shift in ionic solids is derived using thermodynamics. The oxygen potential shift due to the mechanical stress was measured as an electromotive force (EMF) by an oxygen concentration cell. When the mechanical stress was abruptly applied, the stepwise change and subsequent decay of EMF were observed. The maximum values of the EMF essentially corresponds to those from the thermodynamic calculations. The relaxation behavior of EMF can be interpreted in terms of chemical diffusion.
AB - By applying a mechanical load, a transient shift of oxygen potential was observed on (La,Sr)CoO3 and (La,Sr)FeO3. The theoretical relationship between mechanical stress and oxygen potential shift in ionic solids is derived using thermodynamics. The oxygen potential shift due to the mechanical stress was measured as an electromotive force (EMF) by an oxygen concentration cell. When the mechanical stress was abruptly applied, the stepwise change and subsequent decay of EMF were observed. The maximum values of the EMF essentially corresponds to those from the thermodynamic calculations. The relaxation behavior of EMF can be interpreted in terms of chemical diffusion.
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U2 - 10.1149/2.0181411jes
DO - 10.1149/2.0181411jes
M3 - Article
AN - SCOPUS:84923534130
SN - 0013-4651
VL - 161
SP - F3111-F3116
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 11
ER -
