摘要
多孔铂电极的活性对氧传感器的使用性能起着决定作用,通过电化学循环伏安测试(CV)和扫描电镜分析,研究了YSZ(氧化钇稳定的氧化锆)粉末对铂浆法制得的多孔铂电极活性的影响,其中,以循环伏安测试中的电流密度来表征多孔铂电极的活性。结果表明:随着铂浆中YSZ粉末的含量升高,所制得的多孔铂电极孔隙率和电化学反应活性明显升高,这可能是由于YSZ粉末的加入提高了多孔铂电极O2(g),Pt/YSZ体系的三相界面面积造成的。
The activity of porous platinum electrode plays a decisive role in the application performance of oxygen sensor.Effect of YSZ（Yttria-stabilized zirconia） powder on the activity of porous platinum electrode was characterized by cyclic voltammetry and SEM.The current density in cyclic voltammetry featured the characteristics of the electrode activity.Results shows that the porosity and electrochemical reaction activity of the prepared porous platinum electrodeis is significantly improved,as the content of YSZ powder in the platinum paste is increased.That may be due to the addition of YSZ powder increased the area of three-phase boundary of O2（g）,Pt/YSZ system of the electrode.
出处
《仪表技术与传感器》
CSCD
北大核心
2011年第12期6-9,共4页
Instrument Technique and Sensor
关键词
多孔铂电极
铂浆料
YSZ粉末
活性
Key words：porous platinum electrodes
platinum paste
YSZ powder
activity
