Publication

Abstract : Developing a multifunctional material that combines high efficiency, affordability, and robust stability remains a major challenge in advancing clean and renewable energy technologies. Present work reports simple and rational strategy for preparing a hierarchical CoMoO4/Mo2TiC2TX-MXene (CMX) hybrid structure, engineered to function as an outstanding supercapattery electrode and an efficacious electrocatalysts for oxygen evolution reaction (OER). The CMX hybrid structure undergoes surface reconstruction during operation, thereby improved redox activity and remarkable chemical stability of the material. As a supercapattery electrode, CMX hybrid delivers an elevated specific capacity of 988.5 C g−1 at 3 A g−1, along with impressive cycling performance. The assembled CMX//activated carbon supercapattery device further demonstrates an elevated energy density of 37.8 W h kg−1 having a power density of 2400.0 W kg−1, and maintains a specific capacity of 170.4 C g−1 at 3 A g−1. In addition to its energy storage capability, the CMX hybrid exhibits remarkable OER electrocatalytic activity. As an OER catalyst, it reaches a current density of 50 mA cm−2 at an overpotential of 203.6 mV. Experimental and theoretical outcomes reveal the crucial role of MXene incorporation in regulating the catalytic species of CoMoO4 microrods. These results underscore the potential of the CMX hybrid to integrate high-performance energy storage and conversion functions, providing a promising platform for next-generation sustainable energy technologies.