Vanadium Oxide Compounds<b>:</b> Structure, Properties, and Growth from the Gas Phase

Bahlawane, Naoufal; Lenoble, D.

doi:10.1002/cvde.201400057

Cited by 154 publications

(86 citation statements)

References 198 publications

(383 reference statements)

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“…10 The theoretical specific capacitance and potential window of vanadium oxides are relatively high due to their multiple valences from V(II) to V(V). 10 The theoretical specific capacitance and potential window of vanadium oxides are relatively high due to their multiple valences from V(II) to V(V).…”

Section: Introductionmentioning

confidence: 99%

“…Graphenedecorated V 2 O 5 nanobelts exhibit a maximal specific capacitance of 288 F/g at scan rate of 10 mV/s 17 while graphene/VO 2 nanobelt hydrogels can exhibit a specific capacitance as high as 426 F/g at current density of 1.0 A/g. 10 These characteristics of V 6 O 13 make it an ideal conductive additive for the common vanadium oxides. 18 Obviously, the addition of carbonaceous materials has significantly increased the specific capacitance of vanadium oxides due to the increased conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Hierarchical vanadium oxide microspheres forming from hyperbranched nanoribbons as remarkably high performance electrode materials for supercapacitors

Wei

Wang

et al. 2015

J. Mater. Chem. A

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ARTICLE This journal isNovel hierarchical vanadium oxide microspheres forming from hyperbranched growth of nanoribbons have been successfully synthesized by solvothermal method. The as-prepared hierarchical microspheres are in diameter of ~5 μm, in which ~400 nm long nanoribbons grow hyperbranchingly on the clustering nanobelt backbones. These hierarchical microspheres contain 86.2 mass% V 6 O 13 with metallic conductivity and 13.8 mass% VO 2 . Investigation of growth mechanism indicates that EG plays an important role in the formation of hierarchical microspheres by regulating the solvent polar ity and vanadium valences. The hierarchical microspheres exhibit a specific capacitance as remarkably high as 456 F/g, with corresponding volumetric specific capacitance of 3.09 F/cm 3 , at 0.6 A/g in the potential range of 0 to 1.2 V. The maximal energy density and power density achieved are up to 22.8 Wh/kg (0.16 mWh/cm 3 ) and 1.2 kW/kg (8.14 mW/cm 3 ). The high performance of hierarchical vanadium oxide microspheres can be ascribed to the high specific surface area and large amount of mesopores provided by the hierarchical architecture, and the high conductivity and density of V 6 O 13 in high content in the hierarchical microspheres. This work has provided a new strategy to increase the specific capacitance of transition-metal oxides as electrode materials for the next-generation supercapacitors.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hierarchical vanadium oxide microspheres forming from hyperbranched nanoribbons as remarkably high performance electrode materials for supercapacitors

Wei

Wang

et al. 2015

J. Mater. Chem. A

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“…Therefore analysis conditions as those encountered in EDX and XPS, reduce V 2 O 5 to immediate lower oxides of vanadium such as V 6 O 13 [44] creating hurdles in accurate determination of vanadium and oxygen ratios.…”

Section: Resultsmentioning

confidence: 99%

Tunable thermochromic properties of V 2 O 5 coatings

Kumar

Maury

Bahlawane

2017

Materials Today Physics

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“…Vanadium has high oxygen affinity and is able to form compounds with the metal in oxidation states being +5, +4, +3 and +2. Therefore, it is hardly surprising that the vanadium-oxygen phase diagram, shown in Figure 4, is complex and includes almost 20 different phases, frequently with only minor compositional differences [55][56][57][58]. The challenges for the synthesis of VO2 are related to the co-existence of these various oxide forms and also with the existence of various polymorphs.…”

Section: On the Preparation Of Vanadium Dioxide (Vo2) Thin Films And mentioning

confidence: 99%

Thermochromic Oxide-Based Thin Films and Nanoparticle Composites for Energy-Efficient Glazings

Granqvist

Niklasson

2016

Buildings

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Today's advances in materials science and technology can lead to better buildings with improved energy efficiency and indoor conditions. Particular attention should be directed towards windows and glass facades-jointly known as "glazings"-since current practices often lead to huge energy expenditures related to excessive inflow or outflow of energy which need to be balanced by energy-intensive cooling or heating. This review article outlines recent progress in thermochromics, i.e., it deals with materials whose optical properties are strongly dependent on temperature. In particular, we discuss oxide-based thin surface coatings (thin films) and nanoparticle composites which can be deposited onto glass and are able to regulate the throughput of solar energy while the luminous (visible) properties remain more or less unaltered. Another implementation embodies lamination materials incorporating thermochromic (TC) nanoparticles. The thin films and nanocomposites are based on vanadium dioxide (VO 2 ), which is able to change its properties within a narrow temperature range in the vicinity of room temperature and either reflects or absorbs infrared light at elevated temperatures, whereas the reflectance or absorptance is much smaller at lower temperatures. The review outlines the state of the art for these thin films and nanocomposites with particular attention to recent developments that have taken place in laboratories worldwide. Specifically, we first set the scene by discussing environmental challenges and their relationship with TC glazings. Then enters VO 2 and we present its key properties in thin-film form and as nanoparticles. The next part of the article gives perspectives on the manufacturing of these films and particles. We point out that the properties of pure VO 2 may not be fully adequate for buildings and we elaborate how additives, antireflection layers, nanostructuring and protective over-coatings can be employed to yield improved performance and durability that make TC glazings of considerable interest for building-related applications. Finally, we briefly describe recent developments towards TC light scattering and draw some final conclusions.

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Vanadium Oxide Compounds: Structure, Properties, and Growth from the Gas Phase

Cited by 154 publications

References 198 publications

Hierarchical vanadium oxide microspheres forming from hyperbranched nanoribbons as remarkably high performance electrode materials for supercapacitors

Hierarchical vanadium oxide microspheres forming from hyperbranched nanoribbons as remarkably high performance electrode materials for supercapacitors

Tunable thermochromic properties of V 2 O 5 coatings

Thermochromic Oxide-Based Thin Films and Nanoparticle Composites for Energy-Efficient Glazings

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