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借助计时电流法和扫描电镜,研究Pt/YSZ电极烧结条件对其性能的影响。结果表明,随着电极在850℃烧结时间的增加,电极孔隙减少,孔径增大,阳极电势阶跃极化后的稳定电流密度值先增大后减小,烧结时间为10h时所制电极稳定电流密度值最大,活性最强;与烧结时间对电极性能的影响相似,当电极烧结时间为1h时,烧结温度升高也会使得电极孔隙减少,孔径增大,阳极电势阶跃极化后的稳定电流密度值亦先增大后减小,烧结温度为1100℃时所制电极稳定电流密度值最大,性能最好。
By means of chronoamperometry and scanning electron microscopy, the influence of sintering conditions of Pt / YSZ electrode on its performance was studied. The results show that as the sintering time of the electrode increases at 850 ℃, the pores of the electrode decrease and the pore diameter increases. The steady current density after polarization step increases first and then decreases. When the sintering time is 10h, the electrode is stable The current density is the highest and the activity is the strongest. The effect of sintering time on the performance of the electrode is similar. When the sintering time of the electrode is 1h, the sintering temperature increases and the pore size decreases and the pore size increases. The steady current density also increases first and then decreases. When the sintering temperature is 1100 ℃, the stable current density is the highest and the performance is the best.