Abstract
An important area of research is the creation of non-precious metal catalysts with increased catalytic activity and stability for the electrolysis of water to produce hydrogen. A viable and effective method for altering the surface structure of electrocatalysts and improving their performance is morphology control. In this study, the amount of ammonium fluoride (NH4F) used in the hydrothermal process was changed to create a range of nickel sulfide (NiS) electrocatalysts with tunable morphologies. The improved NiS catalyst demonstrated exceptional performance in the hydrogen evolution process (HER) because of its expansive active area, elevated surface activity, and gas diffusion channels. In particular, it showed a low Tafel slope of 65.90 mV dec−1 in 1 M KOH electrolyte solution and an overpotential of 97 mV at a current density of 10 mA cm−2. Remarkably, the NiS electrocatalyst maintained its excellent HER performance even after 60-hour durability test. These findings underscore the significance and feasibility of morphology control in achieving desirable catalytic activity.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.