Rational Design of Heterostructured MXene‐Based Nanomaterials in Electrocatalytic Water Splitting

Abstract Hydrogen energy is widely considered the potential energy resource for energy conversion systems owing to its high energy density and pollution‐free nature. This review provides a comprehensive overview of recent advancements in heterostructured MXenes for hydrogen production. The fundamental properties of MXenes and their unique contribution to catalytic application are addressed, including the synthesis strategies, interlayer modification, and hybridization with other materials to enhance catalytic performance. Comparative analysis highlights the effect of different heterostructured MXenes on enhanced catalytic efficiency by tuning their electronic properties and increasing the surface interactions. We provide the future research direction and challenges of functionalized MXene composites, such as material stability, scalability, and environmental impact. Ultimately, the recent progress underscores the potential of heterostructured MXenes in advancing hydrogen production technologies, offering a path toward cleaner energy solutions.