
Hydrogen catalytic sensor based on SPE at room temperature
ZHANGJ un;CHEN Hai-fan;;ZHANG Mai-hong;SUN Kun-peng;LUO Rui-xian
Journal of Beijing University of Chemical Technology ›› 2001, Vol. 28 ›› Issue (2) : 80-83.
Hydrogen catalytic sensor based on SPE at room temperature
A novel catalytic elect rochemical hydrogen sensor which consist s of solid polymer elect rode (SPE) and catalytic active elect rode workable at room temperature was studied and fabricated. Nafion is often utilized as polymer proton conductivity membrane to which a catalytic elect rode was bonded from Pd black mixed with graphite and Teflon by the mixture-pressing method and in situ impregnation reduction ( I-R) technique. In this work ,the active catalyst of Pd black for hydrogen oxidation was selected and prepared f rom PdCl2 ,the I-R deposition procedure were modified to optimize structure parameters for hydrogen sensor and improve the metal utilization so that electrode loading can be reduced without loss of electrochemical performance. The hydrogen sensing characteristic with air as reference gas was examined. The experimental results show that the sensor keeps good sensing character at room temperature.
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