Santosh, M.S. and Dileepkumar, V.G. (2024) Highly efficient and stable NiSe2-rGO composite-based room temperature hydrogen gas sensor. International Journal of Hydrogen Energy, 50. pp. 1174-1183.

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Abstract

The widespread consumption of hydrogen in commercial and industrial applications has resulted in the devel- opment of different hydrogen gas sensors. However, their practical application is restricted due to their non-cost efficiency, low sensitivity, poor selectivity and high temperature sensing properties. Thus, the development of a sensor capable of overcoming the aforementioned limitations is critical for commercial deployment. As a result, a NiSe2-rGO composite-based H2 gas sensor has been prepared for the first time using a simple hydrothermal technique. The developed material has been systematically characterized for its morphological properties and thoroughly investigated for H2 gas sensing applications. The findings show that the developed NiSe2-rGO composite exhibited enhanced H2 gas sensing properties, besides possessing appreciable selectivity, repeatability as well as long-term stability. Furthermore, the results demonstrate a stable sensor response of 254% within 43 s and 13 s of response and recovery time respectively at a hydrogen concentration of 500 ppm which is 8 and 500 times higher than that of its individual counterparts (NiSe2 and rGO) over a wide relative humidity range, indicating the material’s potential for application in industrial environments. Thus, this work paves the way for the development of stable, effective, fast-responding, and selective hydrogen gas sensors that are functional at room temperature.

Item Type:	Article
Uncontrolled Keywords:	H2 gas sensor NiSe2-rGO composite Room temperature Repeatability and long-term stability Environmental monitoring
Subjects:	Coal Characterisation
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	09 Apr 2024 06:07
Last Modified:	09 Apr 2024 06:07
URI:	http://cimfr.csircentral.net/id/eprint/2709

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