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Highly efficient CuO/reduced graphene oxide nanocomposite as an electrode material for electrochemical application

2024; Elsevier BV; Volume: 191; Linguagem: Inglês

10.1016/j.jpcs.2024.112050

1879-2553

Tabinda Mushtaq, Muhammad Kaleem Shabbir, Muhammad Shafiq Ahmed, J.M. Ashfaq, Said Nasir Khisro, Mohsan Jelani, Javeed Akhtar, Ghulam Ali, Rabbia Naz, Ahmed Nadeem, Khalid Hussain Thebo,

Copper-based nanomaterials and applications

Herein, a copper oxide/reduced graphene oxide (CuO/rGO) nanocomposite was synthesized using the insitu co-precipitation method. The as-prepared nanomaterials were characterized by Fourier-transform infrared (FT-IR) spectroscopy, field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and Raman spectroscopy. Further, cyclic voltammetry, Galvano static charge-discharge curves, and electrochemical impedance spectroscopy were used to measure efficiency to store charge, cycle stability, and ion transport of nanocomposite. The CuO/rGO nanocomposite (1:2) shows a retention of 86.7% of its initial capacitance up to 10000 cycles at 10 Ag-1. The specific capacitances of CuO/rGO (1:1) and CuO/rGO (1:2) nanocomposites were determined to be 100 Fg-1 and 259 Fg-1, respectively, at 8 Ag-1. The as-prepared CuO/rGO nanocomposite has proven to have the ability to function as an anode material and secondary power backup electrode. This study provides a new avenue to design CuO/rGO-based novel electrode materials for future electrochemical storage devices.