Vanadium pentoxide gels:

Legendre, Jean‐Jacques; Livage, Jacques

doi:10.1016/0021-9797(83)90236-9

Cited by 186 publications

(63 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These flat ribbons are about 103 nm long, 10 nm large and 1 nm thick. Their structure is close to that observed in the ab planes oforthorhombic V2Os [5]. Some acid dissociation of V-OH groups occurs at the oxide-water interface so that V205, nH20 gels should rather be described as polyvanadic acids HxV205, nH20 (x ~-, 0.3) [6].…”

Section: Anisotropy Of Polyvanadic Acid Gelsmentioning

confidence: 70%

Optical properties of sol-gel derived vanadium oxide films

Livage

Guzmán

Béteille

et al. 1997

J Sol-Gel Sci Technol

View full text Add to dashboard Cite

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.

show abstract

Section: Anisotropy Of Polyvanadic Acid Gelsmentioning

confidence: 70%

Optical properties of sol-gel derived vanadium oxide films

Livage

Guzmán

Béteille

et al. 1997

J Sol-Gel Sci Technol

View full text Add to dashboard Cite

show abstract

“…The older one, proposed by Legendre et al (1983) was directly derived from the structure of crystalline V20 5. The second model, introduced by Yao et al (1992) proposes that each V205 layer is constituted by two facing VOt.…”

Section: Discussionmentioning

confidence: 99%

XAS investigation on polyvalent cation intercalation in V₂O₅ aerogels

Giorgetti¹,

Passerini²

1999

J Synchrotron Rad

View full text Add to dashboard Cite

show abstract

“…Vanadium pentoxide gels exhibit a ribbon morphology in both solution and solid states [4,5,7,8]. The ribbon-like polymers have been measured to have dimensions of approximately 25nm x 3nm and over I micron in length in solution, and are transverse aggregations of linear polymers as shown by cryo-TEM microscopy[4,51.…”

Section: Introductionmentioning

confidence: 99%