Characteristics of Pt/Nafion® electrodes prepared by an impregnation-reduction method in sensing hydrogen

B. J. Hwang, Y. C. Liu, W. C. Hsu

研究成果: 雜誌貢獻文章同行評審

8 引文 斯高帕斯(Scopus)

摘要

The influences of reductant concentration and platinum loading on the response, recovery time and sensitivity of Pt/Nafion® electrodes prepared by an impregnation-reduction method for detecting hydrogen were investigated. Electrodes with a Pt loading of 4.99 mg cm-2 obtained using 0.0107 M Pt(NH3)4Cl2 and 0.06 M NaBH4, showed a maximum sensitivity of 0.0744 μA ppm-1 in the H2 concentration range of 0∼4508 ppm. However, electrodes with a Pt loading of 7.40 mg cm-2 made using 0.015 M Pt(NH3)4Cl2 and 0.06 M NaBH4 showed the fastest response and recovery. Generally, both the response and the recovery time decreased with increasing hydrogen concentration. A model is proposed to illustrate the sensing phenomenon.

原文英語
頁(從 - 到)69-75
頁數7
期刊Journal of New Materials for Electrochemical Systems
4
發行號2
出版狀態已發佈 - 2001
對外發佈

ASJC Scopus subject areas

  • 電化學
  • 材料科學(全部)
  • 電子、光磁材料
  • 材料化學

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