Journal ArticleDOI
Electrochemical properties of V2O5 thin films deposited by spin coating
M.B. Sahana,Chandran Sudakar,C. Thapa,Gavin Lawes,Vaman M. Naik,R.J. Baird,Greg Auner,Ratna Naik,K.R. Padmanabhan +8 more
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In this paper, the electrochemical properties of V2O5 thin films prepared by spin coating on indium tin oxide coated glass substrates using metalorganic, organic and inorganic sol-gel precursors have been investigated.Abstract:
The electrochemical properties of V2O5 thin films prepared by spin coating on indium tin oxide coated glass substrates using metalorganic, organic and inorganic sol–gel precursors have been investigated. The stoichiometry of the films was found to depend on the carbon to vanadium ratio in the precursors with a larger carbon content leading to a higher non-stoichiometry. The structural properties of the films were investigated by X-ray diffraction, high-resolution transmission electron microscopy (HRTEM), Raman and UV–vis spectroscopy. The non-stoichiometry of the films was investigated by measuring the red shift in the shortest VO bond vibrational frequency between vanadium and terminal oxygen, which is consistent with the observation of planar defects in HRTEM-micrographs. The electrochemical studies by cyclic voltametry indicate that the Li+ intercalation capacity and Li+ diffusion coefficient are increased by an order of magnitude in the non-stoichiometric film, which may significantly improve the properties of vanadium oxide films as a cathode material for Li-ion batteries.read more
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Solution Processed Vanadium Pentoxide as Charge Extraction Layer for Organic Solar Cells
TL;DR: In this paper, the authors show that transition metal-oxides (TMOs) such as molybdenum-, vanadium-, or tungstenoxide (MoO 3, V 2 O 5, and WO 3 ) with high work functions (WFs) of up to 6.9 eV have been shown to be promising alternatives to PEDOT:PSS.
Journal ArticleDOI
A review of the growth of V2O5 films from 1885 to 2010
TL;DR: In this article, the authors provide an up-to-date review of more than a century of research on the growth of vanadium oxide thin films and the Bohr radius for V2O5 gels.
Journal ArticleDOI
Raman and XPS characterization of vanadium oxide thin films with temperature
TL;DR: In this article, a model to explain the oxidation mechanisms and phenomena occurring during the oxidation of the films is proposed and peak frequencies, full-width half-maxima, binding energies and oxidation states from the Raman and X-ray photoelectron spectroscopy experiments are reported and analyzed for all the phases encountered in VO2 films prepared on SiO2/Si and Al2O3 substrates.
Journal ArticleDOI
Solution processed metal-oxides for organic electronic devices
TL;DR: In this article, the authors provide an overview of the impressive recent progress in finding routes for low temperature solution processing of metal-oxides that in terms of functionality are suitable to replace their vacuum processed analogues as building blocks in organic electronic devices.
Journal ArticleDOI
Hydrothermal synthesis, characterization, formation mechanism and electrochemical property of V3O7·H2O single-crystal nanobelts
TL;DR: In this article, single-crystal V 3 O 7 ·H 2 O nanobelts have been successfully synthesized in a large-scale by ethanol reducing of the commercial V 2 O 5 powder via a facile hydrothermal approach, without any templates and surfactants.
References
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Book
Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing
TL;DR: Gel-Derived and Conventional Ceramics: as discussed by the authors Theoretical analysis of deformation and flow in gels and a comparison of gel-derived and conventional ceramics.
Journal ArticleDOI
The LixV2O5 system: An overview of the structure modifications induced by the lithium intercalation
TL;DR: In this paper, the authors show that depending on the amount of lithium ( x ) intercalated in V 2 O 5, several structural modifications are observed, such as a gliding of one layer out of two leading to the δ-type structure.
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Nanostructured Vanadium Oxide Electrodes for Enhanced Lithium-Ion Intercalation†
TL;DR: In this article, the authors summarized the most recent studies on improved Li + -intercalation properties in vanadium oxides by engineering the nanostructure and interlayer structure.
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Structural chemistry of vanadium oxides with open frameworks
Peter Y. Zavalij,Whittingham +1 more
TL;DR: About 60 types of vanadium oxide frameworks are divided into five classes by type of coordination polyhedra present and into 14 subclasses by a more complex structural formation, based on the following scheme.