Synthesis and characterization of graphene oxide-based nanocomposite NaCr2O4/GO for electrochemical applications
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T(2021)
Abstract
This work reports the synthesis of NaCr2O4/GO nanocomposite using co-precipitation method for energy storage applications. Characterizations e.g., scanning electron micro-scopy (SEM) and X-ray diffraction (XRD) were performed to investigate the important op-tical and structural properties. The Crystalline size is seen to decrease from 28 nm for sodium chromite to 16.56 nm for nanocomposite NaCr2O4/GO. Raman results showed the existence of characteristic peaks for NaCr2O4/GO. Using cyclic voltammetry, the specific capacitance for NaCr2O4/GO was measured to be 455.5 F/g. The NaCr2O4/GO nanohybrids depicted significantly higher values of specific capacitance combined with extremely low charge transfer resistance, useful for various applications. (c) 2021 The Author(s). Published by Elsevier B.V.
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Key words
Nanocomposites,Energy storage,Electron impedance spectroscopy (EIS),Cyclic voltammetry,XRD
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