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This study investigates a hydrogen sensor based on platinum and graphene-enriched tungsten oxide, synthesized via impregnation and deposited as a chemoresistor. The sensor was evaluated using both DC and AC impedance spectroscopy at 200 ℃. DC measurements showed a linear, reversible response to hydrogen (2500–25000 ppm), demonstrating sensitivity. The combined DC and AC approach yields multiple parameters correlated with a specific analyte, suggesting a pathway for improved discrimination between different target gases.

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Hydrogen Sensing with Graphene-Wo3Pt: AC/DC Measurements and Admittance Spectroscopy

  • 会议论文

  • 发表日期：

    2025年

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  • T. Polichetti,
  • B. Alfano,
  • E. Massera,
  • M. L. Miglietta,
  • L. Di Benedetto,
  • R. Liguori,
  • N. Rinaldi,
  • A. Rubino

摘要

This study investigates a hydrogen sensor based on platinum and graphene-enriched tungsten oxide, synthesized via impregnation and deposited as a chemoresistor. The sensor was evaluated using both DC and AC impedance spectroscopy at 200 ℃. DC measurements showed a linear, reversible response to hydrogen (2500–25000 ppm), demonstrating sensitivity. The combined DC and AC approach yields multiple parameters correlated with a specific analyte, suggesting a pathway for improved discrimination between different target gases.