Syntheses and characterization of Ru x V 1-x O 2 (0≤x≤0.05)/graphene nanocomposites for flexible supercapacitors and energy storage devices
Ceramics International, ISSN: 0272-8842, Vol: 47, Issue: 21, Page: 30888-30894
2021
- 17Citations
- 10Captures
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Article Description
Herein, we report the syntheses of Ru x V 1-x O 2 /graphene hybrid nanocomposites using a one-step laser scribe approach for supercapacitors and energy storage devices. A series of Ru x V 1-x O 2 (0 ≤ x ≤ 0.05) nanowires decorated graphene were prepared. The effect of ruthenium ions (Ru) on the structure, morphology, elemental composition and oxidation state of the Ru x V 1-x O 2 /graphene hybrid nanocomposites was explored using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The electrochemical properties were emphasized using the electrochemical impedance spectroscopy (EIS), cyclic Voltammetry and galvanostatic charge/discharge measurements. The Ru x V 1-x O 2 /graphene hybrid nanocomposites showed a specific capacitance of 1210 F g −1 at a Ru-concentration of 5 mol%. The Ru 0·05 V 0·95 O 2 /LSG hybrid electrode exhibits excellent capacitance retention up to a current density of 350 A g −1, suggesting a good application prospect for energy storage devices.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0272884221023270; http://dx.doi.org/10.1016/j.ceramint.2021.07.271; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85111601762&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0272884221023270; https://dx.doi.org/10.1016/j.ceramint.2021.07.271
Elsevier BV
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