TY - JOUR
T1 - Characteristics of Pd/Nafion oxygen sensor modified with polypyrrole by chemical vapor deposition
AU - Liu, Yu Chuan
AU - Hwang, Bing Joe
AU - Hsu, Wen Cheng
PY - 2002/6
Y1 - 2002/6
N2 - In this study, Pd/Nafion electrodes were prepared by impregnation-reduction methods in sensing oxygen. To prolong the electrode's life in practical use, a polypyrrole (PPy) film was chemically deposited onto the Pd/Nafion electrode. The sensitivities of PPy-modified Pd/Nafion electrodes are 0.00671 and 0.0117 μA/ppm obtained in O2 concentration regions of 0-5000 and 5000-50,000 ppm, respectively. Generally, the response time and the recovery time decreases and increases significantly with increasing O2 concentrations. After continuous aging tests for 48 h, the sensitivities of the Pd/Nafion and the PPy-modified Pd/Nafion electrodes decrease by 97% and 53%, respectively.
AB - In this study, Pd/Nafion electrodes were prepared by impregnation-reduction methods in sensing oxygen. To prolong the electrode's life in practical use, a polypyrrole (PPy) film was chemically deposited onto the Pd/Nafion electrode. The sensitivities of PPy-modified Pd/Nafion electrodes are 0.00671 and 0.0117 μA/ppm obtained in O2 concentration regions of 0-5000 and 5000-50,000 ppm, respectively. Generally, the response time and the recovery time decreases and increases significantly with increasing O2 concentrations. After continuous aging tests for 48 h, the sensitivities of the Pd/Nafion and the PPy-modified Pd/Nafion electrodes decrease by 97% and 53%, respectively.
KW - Aging
KW - Chemical vapor deposition
KW - Oxygen
KW - PPy-modified Pd/Nafion electrode
UR - http://www.scopus.com/inward/record.url?scp=0035998454&partnerID=8YFLogxK
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U2 - 10.1007/s100080100230
DO - 10.1007/s100080100230
M3 - Article
AN - SCOPUS:0035998454
VL - 6
SP - 351
EP - 356
JO - Journal of Solid State Electrochemistry
JF - Journal of Solid State Electrochemistry
SN - 1432-8488
IS - 5
ER -