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In-situ hydrothermal synthesis of Na3MnCO3PO4/rGO hybrid as a cathode for Na-ion battery

Hassanzadeh, N ; Sharif University of Technology | 2016

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  1. Type of Document: Article
  2. DOI: 10.1016/j.electacta.2016.05.028
  3. Publisher: Elsevier Ltd , 2016
  4. Abstract:
  5. Novel Na3MnCO3PO4 (NMCP)/reduced graphene oxide (rGO) nanocomposite was successfully synthesized via one-step hydrothermal method. The produced materials were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), thermogravimetry (TG), galvanostatic charge/discharge test and inductively coupled plasma optical emission spectroscopy (ICP-OES). Obtained results indicate the formation of ∼25 nm NMCP nanoparticles randomly distributed on rGO sheets. As a promising cathode material for Na-ion batteries, the hybrids deliver gravimetric discharge capacities of 98.3 mAh per gram of electrode (156.0 mAh per gram of NMCP) and 114.0 mAh per gram of electrode (180.9 mAh per gram of NMCP) at C/30 and C/100 rates, respectively. The obtained gravimetric capacities indicate 39% and 52% improvement at C/30 and C/100 rates, respectively, in comparison with the highest corresponding values reported in the literature. The synergy arising from the formation of fine NMCP nanoparticles and NMCP/rGO hybridization is responsible for the achieved higher capacities. © 2016 Elsevier Ltd. All rights reserved
  6. Keywords:
  7. Hydrothermal ; Na-ion battery ; Na3MnCO3PO4 ; Nanocomposite ; Reduced graphene oxide ; Cathodes ; Electric batteries ; Electric discharges ; Electrodes ; Electron microscopy ; Field emission cathodes ; Field emission microscopes ; Graphene ; High resolution transmission electron microscopy ; Hydrothermal synthesis ; Inductively coupled plasma ; Ions ; Nanocomposites ; Nanoparticles ; Optical emission spectroscopy ; Scanning electron microscopy ; Secondary batteries ; Thermogravimetric analysis ; Transmission electron microscopy ; X ray diffraction ; Discharge capacities ; Field emission scanning electron microscopy ; Galvanostatic charge/discharge ; Hydrothermal methods ; Inductively coupled plasma-optical emission spectroscopy ; Na-ion batteries ; Reduced graphene oxides ; X ray photoelectron spectroscopy
  8. Source: Electrochimica Acta ; Volume 208 , 2016 , Pages 188-194 ; 00134686 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0013468616310763