Graphene and Its Perspective Application as Electrocatalytic Materials

The growing field of graphene-based electrocatalytic materials has positioned itself at the forefront of electrochemistry research, particularly in the context of electrochemical water-splitting. This pivotal process in sustainable energy conversion involves the generation of hydrogen and oxygen gases through the judicious application of an electric current. Graphene, a two-dimensional carbon allotrope distinguished by remarkable electronic, mechanical, and chemical properties, has emerged as a compelling candidate for advancing the efficiency and efficacy of electrocatalytic materials. This review comprehensively synthesizes the latest advancements and key insights into the utilization of graphene-based materials as electrocatalysts for water-splitting reactions. Delving into the synergistic interplay between graphene and catalytic components, such as metal nanoparticles or metal oxides, researchers have engineered hybrid structures exhibiting superior catalytic activity. The tunability of graphene's electronic properties through functionalization or doping provides a versatile platform for tailoring catalytic performance. The exploration of metal-free catalysts, including specific graphene derivatives, underscores the potential to reduce reliance on expensive and rare metal catalysts, thereby advancing the economic viability of electrochemical water-splitting technologies. As the demand for sustainable energy intensifies, this review endeavors to offer significant insights into the difficulties and obstacles encountered in the field. The collective efforts highlighted in this review showcase the rich landscape of research in graphene-based electrocatalytic materials, offering a foundation for cleaner and more sustainable electrochemical water-splitting processes.