Synthese sous haute pression d'oxygene d'une forme dense ordonne´e de FeVO4 et mise en evidence d'une varie´te´allotropique de structure CrVO4

Müller, J.; Joubert, J.C.

doi:10.1016/0022-4596(75)90355-2

Cited by 45 publications

(28 citation statements)

References 7 publications

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“…Depending on the synthesis conditions, four allotropic forms of FeVO 4 can be prepared [15]. The lowest density form, type I, is the one prepared under atmospheric pressure, and is closely related to β-Cu 3 Fe 4 (VO 4 ) 6 , as discussed later.…”

Section: Resultsmentioning

confidence: 99%

Lithium insertion chemistry of some iron vanadates

Patoux

Richardson

2007

Electrochemistry Communications

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Lithium insertion into various iron vanadates has been investigated. Although the potential profiles change significantly between the first and subsequent discharges, capacity retention is unexpectedly good. Other phases, structurally related to FeVO 4 , containing copper and/or sodium ions were also studied. One of these, β-Cu 3 Fe 4 (VO 4 ) 6 , reversibly consumes almost 10 moles of electrons per formula unit (ca. 240 mAh g -1 ) between 3.6 and 2.0 V vs. Li + /Li, in a non-classical insertion process. It is proposed that both copper and vanadium are electrochemically active, whereas iron(III) reacts to form LiFe III O 2 . The capacity of the Cu 3 Fe 4 (VO 4 ) 6 /Li system is nearly independent of cycling rate, stabilizing after a few cycles at 120-140 mAh g -1 . Iron vanadates exhibit better capacities than their phosphate analogues, whereas the latter display more constant discharge potentials.

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Section: Resultsmentioning

confidence: 99%

Lithium insertion chemistry of some iron vanadates

Patoux

Richardson

2007

Electrochemistry Communications

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“…It has also high-pressure metastable phases FeVO 4 -II, crystallizing in orthorhombic Cmcm system, FeVO 4 -III, crystallizing in orthorhombic Pbcn system and FeVO 4 -IV, crystallizing in monoclinic wolframite P2/C system [2]. The FeVO 4 structure consists of double bent chains of six edges surrounding six iron atoms.…”

Section: Introductionmentioning

confidence: 99%

Electron spin resonance of FeVO4

Bojanowski

Kaczmarek

2014

Materials Science-Poland

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We report on electron spin resonance (ESR) investigations of a FeVO 4 single crystal. Temperature and angular dependences of ESR resonance positions were measured and calculated in temperature range of 35 -100 K. The spectra show rich angular dependences of the linewidth, the shape and the resonance field. They consist of a single broad line with asymmetric distortion. Due to the low symmetry of the crystal lattice this distortion can be explained by taking into account the influence of non diagonal dynamic susceptibility.

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“…FeVO 4 -I melts incongruently at 850°C with deposition of a-Fe 2 O 3 as a solid product of melting [6]. Three other metastable polymorphs, the orthorhombic FeVO 4 -II, isostructural with CrVO 4 -III [9], the orthorhombic FeVO 4 -III adopting aPbO 2 structure [10] and monoclinic, wolframite structure FeVO 4 -IV [11] are normally formed under high pressure and high temperature conditions [6][7][8][9][10][11][12]. According to Muller and Joubert [11], FeVO 4 -III and FeVO 4 -IV were obtained directly by the high pressure, high temperature synthesis.…”

Section: Introductionmentioning

confidence: 99%

“…Among others, iron(III) orthovanadate(V) is one of the most frequently investigated [1][2][3][4]. [5][6][7][8][9][10][11][12][13]. The basic properties of Fe 2 V 4 O 13 and FeVO 4 are known.…”

Section: Introductionmentioning

confidence: 99%