TY - JOUR
T1 - Characteristics of Pd/Nafion electrodes prepared by an impregnation-reduction method in sensing hydrogen
AU - Hwang, Bing Joe
AU - Liu, Yu Chuan
AU - Hsu, Wen Cheng
PY - 2001
Y1 - 2001
N2 - The influences of reductant concentration and Pd loading on the response and recovery times and the sensitivity in detecting hydrogen of Pd/Nafion electrodes prepared by an impregnation-reduction method were investigated in this study. The Pd/Nafion electrodes with a Pd loading of 6.90 mg/cm2, obtained at 0.006 M Pd(NH3)4Cl2 and 0.06 M NaBH4, show the maximum sensitivity of 0.0519 μA/ppm in the H2 concentration range 0-4410 ppm. However, the Pd/Nafion electrodes with a Pd loading of 11.42 mg/cm2, obtained at 0.01 M Pd(NH3)4Cl2 and 0.06 M NaBH4, show the fastest response and recovery speed in sensing hydrogen. Generally, the response time decreases with an increase of the hydrogen concentration, but the recovery time increases with an increase of the hydrogen concentration. A sensing model is also proposed to illustrate the sensing phenomenon.
AB - The influences of reductant concentration and Pd loading on the response and recovery times and the sensitivity in detecting hydrogen of Pd/Nafion electrodes prepared by an impregnation-reduction method were investigated in this study. The Pd/Nafion electrodes with a Pd loading of 6.90 mg/cm2, obtained at 0.006 M Pd(NH3)4Cl2 and 0.06 M NaBH4, show the maximum sensitivity of 0.0519 μA/ppm in the H2 concentration range 0-4410 ppm. However, the Pd/Nafion electrodes with a Pd loading of 11.42 mg/cm2, obtained at 0.01 M Pd(NH3)4Cl2 and 0.06 M NaBH4, show the fastest response and recovery speed in sensing hydrogen. Generally, the response time decreases with an increase of the hydrogen concentration, but the recovery time increases with an increase of the hydrogen concentration. A sensing model is also proposed to illustrate the sensing phenomenon.
KW - Impregnation-reduction method
KW - Palladium/Nafion
KW - Response and recovery times
KW - Sensitivity
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U2 - 10.1007/s100080000148
DO - 10.1007/s100080000148
M3 - Article
AN - SCOPUS:24944563952
SN - 1432-8488
VL - 5
SP - 274
EP - 279
JO - Journal of Solid State Electrochemistry
JF - Journal of Solid State Electrochemistry
IS - 4
ER -