| Summary: | In this work, silver nanoparticles decorated on reduced graphene oxide (rGO) wrapped manganese oxide nanorods (Ag-rGO@MnO<sub>2</sub>) were synthesized for an active electrode material. MnO<sub>2</sub> nanorods were synthesized via a hydrothermal route, and their coating with GO and subsequent reduction at a higher temperature resulted in rGO@MnO<sub>2</sub>. A further addition of Ag on rGO@MnO<sub>2</sub> was performed by dispersing rGO@MnO<sub>2</sub> in AgNO<sub>3</sub> solution and its subsequent reduction by NaBH<sub>4</sub>. X-ray diffraction (XRD) analysis showed peaks corresponding to MnO<sub>2</sub> and Ag, and the absence of a peak at 2θ = 26° confirmed a few layered coatings of rGO and the absence of any graphitic impurities. Morphological analysis showed Ag nanoparticles anchored on rGO coated MnO<sub>2</sub> nanorods. Apart from this, all other characterization techniques also confirmed the successful fabrication of Ag-rGO@MnO<sub>2</sub>. The electrochemical performance examined by cyclic voltammetry and the galvanic charge–discharge technique showed that Ag-rGO@MnO<sub>2</sub> has a superior capacitive value (675 Fg<sup>−1</sup>) as compared to the specific capacitance value of rGO@MnO<sub>2</sub> (306.25 Fg<sup>−1</sup>) and MnO<sub>2</sub> (293.75 Fg<sup>−1</sup>). Furthermore, the electrode based on Ag-rGO@MnO<sub>2</sub> nanocomposite showed an excellent capacity retention of 95% after 3000 cycles. The above results showed that Ag-rGO@MnO<sub>2</sub> nanocomposites can be considered an active electrode material for future applications in electrochemical devices.
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