Metal Disulfide Fe/Co/Ni as Electrocatalyst for Overall Water Splitting
Category
Sciences and Technology
Department
Material Science
Student Status
Graduate
Research Advisor
Dr. Ram K. Gupta
Document Type
Event
Location
Governors
Start Date
10-4-2025 11:00 AM
End Date
10-4-2025 11:00 AM
Description
Water splitting represents a significant milestone in the advancement of renewable energy, providing a sustainable approach to extracting pure hydrogen and oxygen from water. This process plays a crucial role in clean energy production. Transition metal disulfides such as cobalt disulfide (CoS2), nickel disulfide (NiS2), and iron disulfide (FeS2) serve as vital catalysts in electrochemical water splitting, facilitating both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). Their availability, cost-effectiveness, and eco-friendly nature make them promising candidates for improving this process. This study aims to examine how microwave synthesis influences material properties by employing a consistent methodology. Among the synthesized materials, CoS2 and FeS2 exhibited superior electrocatalytic performance compared to NiS2, demonstrating enhanced current output and overall efficiency in water splitting. The resulting catalysts effectively supported both HER and OER in an alkaline medium (1 M KOH). The recorded overpotentials for OER were 358 mV, 321 mV, and 273 mV, while for HER, they were 163 mV, 168 mV, and 230 mV for CoS2, NiS2, and FeS2, respectively, at a current density of 10 mA/cm2 .
Metal Disulfide Fe/Co/Ni as Electrocatalyst for Overall Water Splitting
Governors
Water splitting represents a significant milestone in the advancement of renewable energy, providing a sustainable approach to extracting pure hydrogen and oxygen from water. This process plays a crucial role in clean energy production. Transition metal disulfides such as cobalt disulfide (CoS2), nickel disulfide (NiS2), and iron disulfide (FeS2) serve as vital catalysts in electrochemical water splitting, facilitating both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). Their availability, cost-effectiveness, and eco-friendly nature make them promising candidates for improving this process. This study aims to examine how microwave synthesis influences material properties by employing a consistent methodology. Among the synthesized materials, CoS2 and FeS2 exhibited superior electrocatalytic performance compared to NiS2, demonstrating enhanced current output and overall efficiency in water splitting. The resulting catalysts effectively supported both HER and OER in an alkaline medium (1 M KOH). The recorded overpotentials for OER were 358 mV, 321 mV, and 273 mV, while for HER, they were 163 mV, 168 mV, and 230 mV for CoS2, NiS2, and FeS2, respectively, at a current density of 10 mA/cm2 .
