Multifunctional DyCoO3-Mo2TiC2TX/g-C3N4 framework for integrated energy storage and hydrogen production applications

초록

Dysprosium cobalt oxide (DCO)-graphitic carbon nitride (gCN)-MXene hybrid nanocomposites were synthesized with a simple hydrothermal technique for advanced energy storage and catalysis devices. The result of XRD, SEM, and XPS analyses validated that it exhibited high crystallinity, uniform morphology, and a significant amount of surface functionalities. The electrochemical testing was conducted, and the specific capacity (Qs) is estimated to be 1865.9C g- 1 at 3 mV s-1, while the hybrid supercapacitor has a Qs of 280.04C g-1, energy density (Ed) of 45 Wh kg-1, and power density (Pd) of 2836 W kg- 1. Furthermore, the composite showed a remarkable electrocatalytic activity with an overpotential of 69 mV and the Tafel slope of 64 mV dec- 1, which indicates that it has good charge transfer property. The findings prove that DCO@MXene@gCN is an electroactive material with multifunctional properties suitable for novel and advanced energy systems.

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