Low-temperature hydrothermal synthesis of the three-layered sodium cobaltite P3-NaxCoO2 (x ∼ 0.60)
BOKINALA KIRAN, Kumar
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
National Institute for R&D in Electrochemistry and Condensed Matter
Universității Politehnica Timișoara [România] = Polytechnic University of Timişoara [Romania] = Université polytechnique de Timișoara [Roumanie] [UPT]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
National Institute for R&D in Electrochemistry and Condensed Matter
Universității Politehnica Timișoara [România] = Polytechnic University of Timişoara [Romania] = Université polytechnique de Timișoara [Roumanie] [UPT]
MICLAU, Nicolae
Universității Politehnica Timișoara [România] = Polytechnic University of Timişoara [Romania] = Université polytechnique de Timișoara [Roumanie] [UPT]
Universității Politehnica Timișoara [România] = Polytechnic University of Timişoara [Romania] = Université polytechnique de Timișoara [Roumanie] [UPT]
BOKINALA KIRAN, Kumar
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
National Institute for R&D in Electrochemistry and Condensed Matter
Universității Politehnica Timișoara [România] = Polytechnic University of Timişoara [Romania] = Université polytechnique de Timișoara [Roumanie] [UPT]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
National Institute for R&D in Electrochemistry and Condensed Matter
Universității Politehnica Timișoara [România] = Polytechnic University of Timişoara [Romania] = Université polytechnique de Timișoara [Roumanie] [UPT]
MICLAU, Nicolae
Universității Politehnica Timișoara [România] = Polytechnic University of Timişoara [Romania] = Université polytechnique de Timișoara [Roumanie] [UPT]
< Réduire
Universității Politehnica Timișoara [România] = Polytechnic University of Timişoara [Romania] = Université polytechnique de Timișoara [Roumanie] [UPT]
Langue
en
Article de revue
Ce document a été publié dans
Materials Research Bulletin. 2014, vol. 54, p. 1-5
Elsevier
Résumé en anglais
In order to obtain the layered sodium cobalt oxide materials by hydrothermal synthesis, the yield diagram for Na–Co–H2O system has been built and studied. In the same time, the well-known data of Co–H2O system have been ...Lire la suite >
In order to obtain the layered sodium cobalt oxide materials by hydrothermal synthesis, the yield diagram for Na–Co–H2O system has been built and studied. In the same time, the well-known data of Co–H2O system have been extended at 250 °C in basic solution.We had first synthesized directly the high temperature stable phase, P3-Na0.6CoO2P3-Na0.6CoO2 by a one-step low-temperature hydrothermal method. The rhombohedral structure of P3-Na0.6CoO2P3-Na0.6CoO2 has been determined by X-ray diffraction (XRD) and the purity of phases has been confirmed by XPS. The thermal stability of P3-Na0.6CoO2P3-Na0.6CoO2 has been investigated by means of high temperature X-ray diffraction in 298–873 K range and when the temperature has reached 723 K, the completely transformation of P3-Na0.6CoO2P3-Na0.6CoO2 in the rhombohedral stable phase α-NaCoO2α-NaCoO2 (space group R-3m ) was observed. Also, a formation mechanism of P3-Na0.6CoO2P3-Na0.6CoO2 phase using the unit cell theory in the hydrothermal process was proposed.< Réduire
Mots clés en anglais
Layered compounds
Phase equilibria
Photoelectron spectroscopy
X-ray diffraction
Origine
Importé de halUnités de recherche