Insertion electrochimique d'ions Li+ dans les gels de pentoxyde de vanadium

Araki, B.; Mailhe, C.; Baffier, N.; Livage, Jacques; Vedel, J.

doi:10.1016/0167-2738(83)90272-2

Cited by 38 publications

(10 citation statements)

References 4 publications

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“…Especially, the d value at the potential of +1.0 V was about 1.84 nm, when the film was oxidized with the extraction of Li + ions and electrons; therefore, the expansion of interlayer space was only possibly derived from the organic solvent, which will be proved by XPS studies. The organic solvent (propylene carbonate) with larger molecular weight is inserted into the layers of V 2 O 5 host by the exchange reaction with the water molecules between the interlayer at the drive of anodic potential [11,12]. With the increase of cathodic potentials, the d value of the film is decreasing perhaps due to the deeper insertion of Li + ions and its transfer to the lattice gap, which can be verified by the change of (0 1 0) peak.…”

Section: Structural Properties Of Mo Doped V 2 O 5 Filmmentioning

confidence: 82%

Multi-electrochromism behavior and electrochromic mechanism of electrodeposited molybdenum doped vanadium pentoxide films

Jin

Chen

Zhu

et al. 2010

Electrochimica Acta

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Section: Structural Properties Of Mo Doped V 2 O 5 Filmmentioning

confidence: 82%

Multi-electrochromism behavior and electrochromic mechanism of electrodeposited molybdenum doped vanadium pentoxide films

Jin

Chen

Zhu

et al. 2010

Electrochimica Acta

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“…X-ray diffraction experiments show that the internal structure of V205 ribbons does not change suggesting that all Li + ions are intercalated between the ribbons rather than in the channels of a 3D network as for crystalline V2Os. This could explain the good reversibility of the process [16].…”

Section: B Electrochemical Properties Of Anisotropic 11205 Nil20 Cmentioning

confidence: 92%

Optical properties of sol-gel derived vanadium oxide films

Livage

Guzmán

Béteille

et al. 1997

J Sol-Gel Sci Technol

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Abstract. Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The condensation of vanadic acid gives long ribbon-like oxide particles which macroscopically orient in the same direction in aqueous sols when their concentration is larger than 0.12 mol.1-1 . These anisotropic sols and gels should be considered as lyotropic nematic liquid crystals. Thick films in which ribbons align along the same direction can be deposited. These oriented coatings exhibit improved electrochemical properties as reversible cathodes for lithium batteries. Amorphous oxo-polymers are formed via the controlled hydrolysis of vanadium alkoxides. They allow the deposition of optically transparent thin films that exhibit interesting electrochromic properties and turn reversibly from yellow to green upon electrochemical reduction. Moreover these alkoxide derived films can be easily reduced into vanadium dioxide. These VO2 thin films exhibit thermochromic properties and could be used as optical switches in the infrared. The transition temperature of these VO2 films can be modified by doping the vanadium oxide with other cations.

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“…[101] Upon further lithiation, the solvent is expelled by the insertion of Li + , which results in a contraction of the layers. [100] As compared to its crystalline counterpart, the V 2 O 5 xerogel has a higher open circuit potential and the voltage profile, upon Li + insertion, does not have the typical sequence of plateaus of orthorhombic V 2 O 5 . [103] Up to 1.9 eq.…”

Section: Lithiummentioning

confidence: 96%

Bilayered Nanostructured V₂O₅·nH₂O for Metal Batteries

Moretti

Passerini

2016

Advanced Energy Materials

166

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Bilayered V2O5·nH2O prepared by sol–gel synthesis is generally assumed amorphous due to lack of long‐range structural order. However, at the nanoscale, a well‐organized repetition of bilayers is found and thus V2O5·nH2O can be considered a nanostructured material. Synthesis route affects the morphological and structural characteristics of V2O5·nH2O and, depending on the drying method used, xerogel and aerogel are obtained. The reduced structural order, the large interlayer space and the short diffusion length that this class of material offer are the key factors that allow V2O5·nH2O to reversibly host cations that are different in charge and dimensions. These properties make bilayered V2O5·nH2O materials almost unique for the wide range of applicability in metal batteries. Herein, a panoramic of the most common V2O5·nH2O synthesis methods and the peculiar characteristics of this material is given. A survey of the most important findings on the use of bilayered V2O5·nH2O for metal batteries is reported focusing on Li‐, Na‐ and Mg‐batteries. The increased number of publications recently divulgated confirms the renewed interest on V2O5·nH2O for energy storage and thus an updated rationalization of the findings can be helpful to guide further technological development and research activity in the field.

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Insertion electrochimique d'ions Li+ dans les gels de pentoxyde de vanadium

Cited by 38 publications

References 4 publications

Multi-electrochromism behavior and electrochromic mechanism of electrodeposited molybdenum doped vanadium pentoxide films

Multi-electrochromism behavior and electrochromic mechanism of electrodeposited molybdenum doped vanadium pentoxide films

Optical properties of sol-gel derived vanadium oxide films

Bilayered Nanostructured V₂O₅·nH₂O for Metal Batteries

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Insertion electrochimique d'ions Li+ dans les gels de pentoxyde de vanadium

Cited by 38 publications

References 4 publications

Multi-electrochromism behavior and electrochromic mechanism of electrodeposited molybdenum doped vanadium pentoxide films

Multi-electrochromism behavior and electrochromic mechanism of electrodeposited molybdenum doped vanadium pentoxide films

Optical properties of sol-gel derived vanadium oxide films

Bilayered Nanostructured V2O5·nH2O for Metal Batteries

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Product

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Bilayered Nanostructured V₂O₅·nH₂O for Metal Batteries