Improved hydrogen gas sensing performance of Pd-Ni alloy thin films

This study examined the palladium (Pd)-nickel (Ni) alloy films' ability to detect hydrogen (H2) at various Ni concentrations. The co-sputtering method was used to make the Pd-Ni alloy sensors. The response of the Pd-Ni alloys sensor reduced linearly as Ni8% concentration was added to Pd, and the resistance of the Pd-Ni alloys was reversible upon exposure to H2 gas with absorption and desorption characteristics. The experimental findings demonstrated that the Pd-Ni alloy sensor response time of 11 s was much faster than that of pure Pd, with great selectivity and stability for a period of 90 days.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.