Conductivity and stability of cobalt pyrovanadate

Cowin, Peter Ian; Lan, Rong; Petit, Christophe Tg; Zhang, Lei; Tao, Shanwen

doi:10.1016/j.jallcom.2010.12.166

Cited by 11 publications

(8 citation statements)

References 27 publications

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“…It should be noted that the redox stability of Co2V2O7 towards reduction in a 5 % H2/Ar atmosphere from 300-700 o C has been reported [50]. Following treatment at 700 o C for 12 hours, XRD studies showed that Co2V2O7 decomposed completely to Co2VO4 and VO (the reaction was almost complete in 1 hour), with H2O as the other product.…”

Section: Resultsmentioning

confidence: 90%

Oxidative dehydrogenation of isobutane to isobutene by pyrovanadates, M 2 V 2 O 7 , where M(II) = Mn, Co, Ni, Cu and Zn, and Co 2 VO 4 and ZnV 2 O 4 : The effect of gold nanoparticles

Almukhlifi

Burns

2015

Journal of Molecular Catalysis A: Chemical

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Section: Resultsmentioning

confidence: 90%

Oxidative dehydrogenation of isobutane to isobutene by pyrovanadates, M 2 V 2 O 7 , where M(II) = Mn, Co, Ni, Cu and Zn, and Co 2 VO 4 and ZnV 2 O 4 : The effect of gold nanoparticles

Almukhlifi

Burns

2015

Journal of Molecular Catalysis A: Chemical

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“…A Ce 0.9 Sr 0.1 V 0.5 Cr 0.5 O 3 -YSZ anode together with 5 wt.% Ni attained P max of only 35 mW cm − 2 in dry CH 4 . [ 365 ] Another approach to mitigate the redox instability problem focuses on ortho-and pyro-vanadates which are by themselves stable in oxidizing atmospheres, such as FeVO 4 , [ 366 ] Co 2 V 2 O 7 , [ 367 ] , Ce 1− x Ca x VO 4 , [ 368 ] and Ce 1− x Sr x VO 4 . [ 362 ] The underlying methodology is to make these vanadates also stable in reducing environment.…”

Section: Titanatementioning

confidence: 99%

Solid Oxide Fuel Cell Anode Materials for Direct Hydrocarbon Utilization

Chan

Liu

et al. 2012

Advanced Energy Materials

280

159

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Solid oxide fuel cells (SOFC) are highly efficient energy conversion devices with the advantage of directly utilizing hydrocarbon fuels. Starting with a short introduction about the fuel challenges and early achievements in this field, this review paper focuses on advances in oxygen‐ion conducting electrolyte‐based SOFC during the last 15 years. Robust anodes immune to carbon deposition are a prerequisite for direct hydrocarbon SOFC. In this paper, direct hydrocarbon SOFC anode materials are classified into three general categories: Ni‐cermet, Cu‐cermet, and oxide‐based anodes. Oxide anodes are further classified in terms of their crystalline structures, namely fluorite, rutile, tungsten bronze, pyrochlore, perovskite, and double perovskite. Achievements and recent advances on these SOFC anodes are reviewed and discussed. The concluding remarks summarize the pros and cons of direct hydrocarbon SOFC anode materials along with the perspective of future research trends.

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“…Among the various metal oxides the promising candidate, which possesses an interesting catalytic properties of divalent metal vanadates (V) [1,2], including cobalt (II) vanadates (V) [3,4] have been recognized for many years. The variety of vanadium oxidation states ranging from 2+to5+, wide band gap, good thermal, chemical stability and also the unevenness of oxygen coordination geometry causes the two phases such as magnolia (V n O 2n-1 ) and Wadsley (V 2n O 5n-2 ) helps to improve the performance of V 2 O 5 cathode in lithium ion batteries [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

Effect of In2O3 Dopant on the Properties of V2O5 Thin Films Prepared by Vacuum Deposition on ITO Substrates

Yuvaraj¹

2018

IJRASET

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I. INTRODUCTIONThe ambition of the present investigation is the search for new phases showing properties of intellectual and eventual practical interest. Among the various metal oxides the promising candidate, which possesses an interesting catalytic properties of divalent metal vanadates (V) [1,2], including cobalt (II) vanadates (V) [3,4] have been recognized for many years. The variety of vanadium oxidation states ranging from 2+to5+, wide band gap, good thermal, chemical stability and also the unevenness of oxygen coordination geometry causes the two phases such as magnolia (V n O 2n-1 ) and Wadsley (V 2n O 5n-2 ) helps to improve the performance of V 2 O 5 cathode in lithium ion batteries [5,6,7]. The most stable form of the V-O system in the V 2 O 5 was constructed the orthorhombic unit cell structure and also it shows a good resistive property to corrosion because of formation of a surface oxide film, hence it is not affected by water, air, acids at room temperature [8,9]. Even though V 2 O 5 system acquires all supporting qualities of the survival, the modest electronic conductivity is challenging one of the good electrodes [10, 11,12]. Recently, indium oxide promoted vanadium pentoxide has been applied for various purposes, such as photo electrode conductive thin films. In the present investigation provides basic insights of V 2 O 5 -In 2 O 3 based upon their significance in the field energy storage as a primary concern. Amidst of various deposition techniques for film growth, the vacuum evaporation method which yields a high homogeneity surface and controls the deposition parameters gains attention [13][14][15][16]. Hence, this work focused to prepare the thin film for cathode application through the vacuum evaporation method and also it portrays structural, morphological and optical properties of the prepared film.II. EXPERIMENTAL DETAILS V 2 O 5 powder (99.999% source powder purchased from Aldrich) were thermally deposited on the chemically cleaned ITO glass substrates in a vacuum of around 5.5x10-5 Torr using a HIND HIVAC coating unit (Model no. 12A4D). The size of substrates was

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Conductivity and stability of cobalt pyrovanadate

Cited by 11 publications

References 27 publications

Oxidative dehydrogenation of isobutane to isobutene by pyrovanadates, M 2 V 2 O 7 , where M(II) = Mn, Co, Ni, Cu and Zn, and Co 2 VO 4 and ZnV 2 O 4 : The effect of gold nanoparticles

Oxidative dehydrogenation of isobutane to isobutene by pyrovanadates, M 2 V 2 O 7 , where M(II) = Mn, Co, Ni, Cu and Zn, and Co 2 VO 4 and ZnV 2 O 4 : The effect of gold nanoparticles

Solid Oxide Fuel Cell Anode Materials for Direct Hydrocarbon Utilization

Effect of In2O3 Dopant on the Properties of V2O5 Thin Films Prepared by Vacuum Deposition on ITO Substrates

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