Synergy of a 2D/2D Ti3C2Tx MXene–graphene oxide heterostructure for enhanced hydrogen storage

Abstract

The demand for hydrogen storage materials for fuel cell devices is growing rapidly worldwide, driven by a combination of environmental, economic, and technological factors. 2D MXenes and graphene are crucial for developing efficient and safe hydrogen storage systems. The incorporation of GO into Ti₃C₂T_x MXene enhanced its hydrogen storage capacity by ∼57% at 303 K, ∼46% at 273 K, ∼10% at 253 K, and ∼8% at 173 K. This improved performance of Ti₃C₂T_x MXene is due to the increased surface area, synergistic interactions, and defect-induced adsorption sites in the Ti₃C₂T_x–GO composite. Therefore, this study highlights the promise of MXene–GO hybrids for efficient hydrogen storage applications.