Synthesis of a novel p-type delafossite CuInO2 flowers anchored on Ti3C2 sheetsas a positive electrode for high performance asymmetric supercapacitor

초록

Creating sustainable new energy has become a top concern due to environmental contamination and the energy crisis. Electrochemical energy storage technology is a green technology that exhibits a higher energy density (battery) or power density (supercapacitor). For both present and future uses, there is an increasing need for alternate energy storage systems. We have synthesized a p-type Cu-based delafossite material, CuInO2. Materials with delafossite structures have the ABO(2) formula and have gained much interest among researchers because of their distinctive characteristics, namely their layered structure and p-type conductivity. MXene (Ti3C2) is a two-dimensional stacked transition metal carbide, nitride, or carbonitride etched from the MAX phase by specific chemical etching of a mutually connected layer. Ti3C2 is an advanced material known for its energy storage purposes. The goal of this work was to create a material of CuInO2@Ti3C2 using an easy and affordable hydrothermal process. The synthesized material has been investigated by X-ray diffraction studies (XRD), morphology studies, and electrochemical techniques. The CuInO2@Ti3C2 composite can function as an electrocatalyst in energy storage and supercapacitor applications. It was obtained by the hydrothermal procedure for energy storage functions. The composite of CuInO2@Ti3C2 demonstrated a high specific capacitance of 526 F/g at 1 A/g and retained 88 % of its stability after 4000 cycles, indicating the robust stability of our material. Furthermore, a two-electrode system comprising an asymmetric device of CuInO2@Ti3C2//AC exhibited great energy and power density of 24.06 Wh kg(-1) and 2998 W kg(-1).

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