A chemoresistive hydrogen gas sensor prepared by a sputtered indium tungsten oxide thin film and palladium nanoparticles

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL International Journal of Hydrogen Energy Pub Date : 2025-01-20 DOI:10.1016/j.ijhydene.2024.12.039

Jia-Jin Jian , Pai-Yi Chu , Jung-Chuan Wang , Chi-Kang Kuo , Kun-Wei Lin , Wen-Chau Liu

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Abstract

A new chemoresistive hydrogen (H₂) gas sensor, incorporated by a radio frequency (RF) sputtered indium tungsten oxide (IWO) thin film and evaporated palladium nanoparticles (Pd NPs), is produced and studied in this work. The employed Pd NPs enhance the catalytic activity towards H₂ gas due to their larger effective surface area, thereby improving the gas sensing performance. Various characterization techniques are used for structural, elemental, and compositional analyses. Gas measurements are conducted at 100 °C under various H₂ gas concentrations. In an environment of 1% H₂/air, the sensor exhibits a high sensing response of 1.8 × 10⁶ with a response time of 88 s and a recovery time of 13 s at 100 °C. The device also demonstrates promised repeatability, long-term (180 days) durability, and selectivity. The influences of relative humidity RH(%) on the H₂ gas sensing properties are studied in this work. Furthermore, the sensor shows advantages in terms of simple structure, ease of fabrication, and low cost.

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.