Nafion based solid-state gas sensors: Pd/Nafion electrodes prepared by an impregnation-reduction method in sensing oxygen

Bing Joe Hwang, Yu Chuan Liu, Wen Cheng Hsu

Research output: Contribution to journalArticle

6 Citations (Scopus)


The influences of the reductant concentration of NaBH4 and the quantity of Pd loading on the active surface area and the sensitivity of the Pd/Nafton electrodes prepared by an impregnation-reduction method in detecting oxygen were investigated in this study. The Pd/Nafion electrodes with Pd loading of 6.90 mg cm-2 obtained at 0.006 MPd(NH3)4Cl2 and 0.06 MNaBH4 show maximum sensitivities of 0.0198 μA ppm-1 and 0.0280 μA ppm-1 obtained in O2 concentration regions of 0∼5000 and 5000∼50000ppm, respectively. A sensing model was also proposed to illustrate the sensing phenomenon.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalJournal of New Materials for Electrochemical Systems
Issue number1
Publication statusPublished - 1999
Externally publishedYes



  • Impregnation-reduction method
  • Nafion
  • Oxygen
  • Pd
  • Sensor

ASJC Scopus subject areas

  • Electrochemistry
  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

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