Fabrication of in-situ hydrothermally grown NiRu0.3Se nanostructures on MXene sheets for asymmetric supercapacitor applications

Metal selenides anchored MXene based nanocomposites has gained sustainable attention due to their excellent performance as an electrocatalyst for efficient energy storage reactions. Herein, a cost-effective bottom-up strategy is developed for the fabrication of Ru doped NiSe2 electrocatalyst on the accordion like MXene sheets through in situ grown self-assembled hydrothermal process operated at 185°C and analyzed for supercapacitor applications. Physicochemical characterizations were performed for the rigorous analysis of the crystal structure, nano structural morphology, elemental composition and electrochemical properties of hydrothermally synthesized NiRu0.3Se and NiRu0.3Se/Ti3C2Tx nanocomposites using XRD, FESEM, EDX, XPS, CV, EIS, GCD. The morphology reveals the uniformly fabrication of NiRu0.3Se nanoparticles on the exfoliated Ti3C2Tx nanosheets. However, XRD pattern exhibit hexagonal and cubic crystal structure associated with NiSe and RuSe2 nanoparticles. The potential battery type NiRu0.3Se/Ti3C2Tx nanocomposite exhibit shown a relatively high supercapacitance of 1136 Fg−1 as compare to NiRu0.3Se2 and MXene substrate at 1Ag−1 current density owing to the distinct synergistic interactions. The Asymmetric supercapacitor device of NiRu0.3Se/Ti3C2Tx electrode demonstrate an excellent electrochemical performance with a high specific capacity of Fg−1 at 0.5Ag−1 with a good cycle life of 94% for 5000 cycles.

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