Preparation and electrochemical characterization of Mo9O26 nanopowders for supercapacitors applications
| Autor: | R. Shobana, Ganesan Ravi, Rathinam Yuvakkumar, V. Ganesh, B. Saravanakumar |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Sodium molybdate Analytical chemistry Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Atomic and Molecular Physics and Optics Fourier transform spectroscopy 0104 chemical sciences symbols.namesake chemistry.chemical_compound chemistry symbols General Materials Science Nanorod Physical and Theoretical Chemistry Cyclic voltammetry Fourier transform infrared spectroscopy 0210 nano-technology Raman spectroscopy |
| Zdroj: | Nano-Structures & Nano-Objects. 19:100340 |
| ISSN: | 2352-507X |
| Popis: | In this work, the role of different solvent in the synthesis of Mo9O 26 nanoparticles was examined through hydrothermal method at optimized experimental conditions. The precursor solutions consists of sodium molybdate salts was dissolved respectively in deionized water, ethanol and mixture of ethanol and deionized water in a separate beaker and labeled as RSF1, RSF2 and RSF3. The obtained Mo9O 26 nanoparticles were examined by employing fundamental studies such as X-ray diffraction (XRD), Raman Spectroscopy, Fourier Transform Spectroscopy (FTIR), and Photoluminescence (PL) analysis. The obtained XRD spectra revealed the formations of Mo9O 26 nanoparticles employing the sharp diffraction peak appeared at 26.5o corresponding to the lattice planes of (−2 0 5) belongs to the space group P 1 ¯ ( 2 ) . FESEM analysis discloses the different configuration of Mo9O 26 nanoparticles such as truncated nanorods, fine agglomerated nanorods and half edge hexagonal structure for different solvents. Further, the electrochemical studies have been carried out employing cyclic voltammetry (CV) and galvanstatic charging–discharging studies. From CV studies, the active material as electrode (RSF1) delivers the high specific capacitance value of 672 Fg−1 at the low scan rate of 10 mV. The high specific capacitance of 623 Fg−1 at a current density 0.5 Ag−1 demonstrated by RSF1 is primarily due to the interconnected truncated nanorods which enhances the charge storage capacity by nearly 2 fold when compared to RSF2 and RSF3. |
| Databáze: | OpenAIRE |
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