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Structural characteristic of vanadium(V) oxide/sulfur composite cathode for magnesium battery applications

Sheha E., Kamar E. M.

Materials Science Poland

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2019

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Vol. 37, No. 4

570--576

EN

Magnesium batteries are regarded as promising candidates for energy storage devices owing to their high volumetric capacity. The practical application is hindered, however, by strong electrostatic interactions between Mg2+ and the host lattice and due to the formation of a passivation layer between anode and electrolyte. V2O5is a typical intercalation compound with a layered crystal structure ((0 0 1) interlayer spacing ~ 11.53 Å), which can act as a good host for the reversible insertion and extraction of multivalent cations. Herein, we have presented an investigation of the effects of S injection on the structure, electrochemical performance and Mg2+ diffusion in V2O5 cathode materials for Mg-ion batteries. The V2O5/S composite structure was investigated using X-ray diffraction, field-emission scanning electron microscope and energy dispersive X-ray spectroscopy. The integrated electrode exhibits an improvement in the electrical and electrochemical properties compared to the V2O5 electrode. The as-prepared V2O5/S composite has an initial discharge capacity of 310 mAh∙g−1 compared to 160 mAh∙g−1 for the V2O5 electrode. The V2O5 /S composite is a promising cathode material for magnesium-ion battery applications.

2

Solubility equilibrium in ternary systems: vanadium(V) oxide - alkali metal salts - water

Trypuć M., Chałat M., Mazurek K.

Polish Journal of Chemical Technology

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2005

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Vol. 7, nr 2

72-79

EN

This paper presents an approximation of the experimental data on the mutual components solubility for four ternary systems: K2SO4 - V2O5 - H2O, Na2SO4 - V2O5 - H2O, KCl - V2O5 - H2O, NaCl - V2O5 - H2O at the temperature range 293÷323 K, with the use of mathematical functions.

3

Synthesis of KVO3 from KC1 and V2O5 in presence of oxygen

Trypuć M., Białowież K., Kiełkowska U., Torski Z., Mazurek K.

Polish Journal of Chemical Technology

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2001

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Vol. 3, nr 1

33-34

EN

Investigation was carried out on the optimization conditions of the synthesis of KVO3 and Cl2 from KC1 and V2O5 in the presence of atmospheric oxygen. The research was performed in temperature range 673 - 873 K, for 1 to 7 hours time duration. These data are essential for the evaluation of a new, non - waste production method of potassium carbonate.

4

Investigations on the influence of silicon dioxide introduced as a neutral carrier into the reaction mixture on V2O5 conversion into KVO3

Trypuć M., Torski Z., Białowież K.

Polish Journal of Chemical Technology

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2001

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Vol. 3, nr 1

28-32

EN

Exfoliated graphite (EG) produced on an industrial scale found a new application such as a sorbent for the removal of heavy oils from water. Some investigations of the oil sorption on EG were performed with very satisfactory results. In this paper two methods of EG preparations will be discussed to consider the quality of the obtained product for an oil sorbent application and the influence the way of EG production on the environment.