Carbon Transition Metal Dichalcogenides Synergies A Promising Strategy for Electrocatalytic Overall Water Splitting

Abstract

2024 newlineThis research delves into the electrocatalytic water-splitting process for simultaneous hydrogen and oxygen generation, with a specific focus on composite materials consisting of carbon compounds and CoS2. The synthesis methodology employs a hydrothermal approach, resulting in nanocomposites characterized by interconnected and porous morphologies designed to optimize electrocatalytic performance. The study systematically explores the electrocatalytic behaviour of these carbon compound-CoS2 composites, emphasizing their efficacy in enhancing both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). Notably, the composites demonstrate reduced overpotentials for HER and OER, indicating heightened efficiency and rapid charge transfer kinetics. The synergistic interactions between CoS2 and the incorporated carbon compounds contribute to the creation of abundant active sites on the surface, ensuring optimal catalytic performance. Furthermore, the research rigorously evaluates the stability of these composites over extended durations, revealing sustained functionality in both HER and OER conditions. The cost-effectiveness of the utilized carbon compounds underscores the practical viability of these composites for scalable applications. This work advances our understanding of electrocatalytic water splitting and underscores the potential of carbon compound-CoS2 composites as promising candidates for efficient and sustainable hydrogen and oxygen generation. The findings contribute to the development of advanced electrocatalysts that address critical challenges in renewable energy conversion technology. The first investigation centres on the fabrication of rGO CoS2 nanocomposites, characterised by a distinct spherical nanostructure. Demonstrating robust electrocatalytic efficiency, these nanocomposites showcase a notably low overpotential of 377 mV at 10 mA/cm2 and a minimal Tafel slope of 121 mV/dec, positioning them as promising contenders for advancing hydrogen production technologies in t