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应用两电极直流极化法测定了氧传感器在380~800℃中的Pt,空气/YSZ电极电阻,从交流低频阻抗测量外推法测得YSZ的体电阻,可以将YSZ的直流极化从电极的过电位中区分出来.Pt,空气|(ZrO2)0.93(Y2O3)0.07|空气,Pt,电池的直流极化1gI-η作图得出,电极电荷传递系数为2.YSZ体电阻、Pt,空气/YSZ电极电阻和电极交换电流对温度的Arrhenius图,在600℃和570℃附近存在着类似的活化能变化.测量表明;700℃时,氧传感器的测量响应时间2.5s.
The resistance of Pt and air / YSZ electrode of oxygen sensor at 380 ~ 800 ℃ was measured by two-electrode direct current polarization method. The body resistance of YSZ was measured by extrapolation of AC low frequency impedance measurement. In the over-potential distinction. Pt, air | (ZrO2) 0.93 (Y2O3) 0.07 | air, Pt, DC polarization of the battery 1gI-η plotted, the electrode charge transfer coefficient of 2. YSZ body resistance, Pt, air / YSZ electrode resistance and electrode exchange current have similar changes in activation energy for the Arrhenius plot of temperature at 600 ° C and 570 ° C. Measurement shows that; 700 ℃, the oxygen sensor measurement response time 2.5s.