Thin films of vanadium oxide grown on vanadium metal: oxidation conditions to produce V2O5 films for Li-intercalation applications and characterisation by XPS, AFM, RBS/NRA

Lindström, Rakel Wreland; Maurice, Vincent; Zanna, Sandrine; Klein, Lorena H.; Groult, Henry; Perrigaud, Laurent; Cohen, C.; Marcus, Philippe

doi:10.1002/sia.2141

Cited by 75 publications

(41 citation statements)

References 46 publications

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“…[20,21]). The average thickness of the oxide films was measured by RBS, and is about 220 nm with an outer layer constituted of crystalline vanadium pentoxide (∼80 nm).…”

Section: Sample Preparationmentioning

confidence: 96%

“…The surfaces were prepared by three steps of mechanical, mechanical/chemical polishing and electropolishing, as previously described in detail [20,21].…”

Section: Sample Preparationmentioning

confidence: 99%

“…The presented work refers to V 2 O 5 thin films formed by thermal oxidation of vanadium metal. The intercalation properties resulting from the chemical and structural properties of these thermal oxide thin films have recently been studied by X-ray photoelectron spectroscopy (XPS), Rutherford backscattering spectrometry (RBS), nuclear reaction analysis (NRA), atomic force microscopy (AFM), X-ray diffraction (XRD), and electrochemical methods [20,21].…”

Section: Introductionmentioning

confidence: 99%

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XPS study of Li ion intercalation in V2O5 thin films prepared by thermal oxidation of vanadium metal

Światowska-Mrowiecka

Maurice

Zanna

et al. 2007

Electrochimica Acta

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127

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“…[20,21]). The average thickness of the oxide films was measured by RBS, and is about 220 nm with an outer layer constituted of crystalline vanadium pentoxide (∼80 nm).…”

Section: Sample Preparationmentioning

confidence: 96%

“…The surfaces were prepared by three steps of mechanical, mechanical/chemical polishing and electropolishing, as previously described in detail [20,21].…”

Section: Sample Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

XPS study of Li ion intercalation in V2O5 thin films prepared by thermal oxidation of vanadium metal

Światowska-Mrowiecka

Maurice

Zanna

et al. 2007

Electrochimica Acta

Self Cite

127

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“…The latter is the appearance of an anodic coloration in the near-ultraviolet region and a cathodic coloration in the near-infrared region as Li is intercalated. 3 Amorphous and crystalline vanadium oxide thin film electrodes have been prepared using chemical 4 or physical 5 vapor techniques as well as wet chemical 6,7 and electrochemical 8 depositions methods. Electrochemical studies have shown that the performance of vanadium oxide films is directly related to their morphology, crystallinity, degree of disorder, stoichiometry and other parameters related to the deposition methods and conditions.…”

Section: Introductionmentioning

confidence: 99%

Li diffusion and electrochromism in amorphous and crystalline vanadium oxide thin film electrodes

Scarmínio¹,

Catarini²,

Urbano³

et al. 2008

J. Braz. Chem. Soc.

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Filmes amorfos de óxido de vanádio foram depositados sobre substratos de vidro recobertos com ITO, pela técnica de deposição de filmes de óxidos metálicos por filamento aquecido. Os espectros de difração de raios-X mostraram que os filmes como-depositados tratados termicamente em atmosfera de argônio em 200 e 300 o C continuaram amorfos e os tratados a 400 e 500 o C tornaram-se policristalinos, com a estrutura do V 2 O 5 . Os eletrodos foram eletroquimicamente reversíveis sob intercalação de Li + , exibindo o efeito eletrocrômico, observado por medidas da transmitância ótica em 632,8 nm. O coeficiente de difusão do Li, DC, foi medido pela técnica de titulação galvanostática intermitente (GITT) em função da carga inserida. Para os filmes cristalinos, a absorbância ótica e o DC aumentam com a quantidade de Li inserido, nas regiões de fase única de Li x V 2 O 5 cristalino e decrescem nas regiões de duas fases. Para essas, um DC efetivo foi considerado. Nos filmes cristalinos foi inferida a presença de outros óxidos de vanádio misturados à matriz de V 2 O 5 , através das medidas de cronopotenciometria e de DC.Amorphous vanadium oxide films were synthesized onto ITO-coated glass substrates by the hot filament metal oxide deposition technique. The as-deposited samples were heat-treated in an argon atmosphere. X-ray diffraction analysis revealed that the films treated at 200 and 300 o C were still amorphous, while those treated at 400 and 500 o C were crystalline, with a V 2 O 5 structure. All electrodes were electrochemically reversible for Li + intercalation, exhibiting the electrochromic effect, observed from optical transmittance measurements at 632.8 nm. The Li-diffusion coefficient, DC, was measured by the galvanostatic intermittent titration technique (GITT) as function of the inserted charge. For the crystalline films it was observed that the optical absorbance and the DC increase with increasing Li insertion in the single-phase regions of crystalline Li x V 2 O 5 and decrease in the two-phase regions. For the latter, an effective DC was considered. The presence of other vanadium oxides mixed to the V 2 O 5 matrix was inferred for the crystalline films from the chronopotentiometric and DC measurements. Keywords: vanadium oxide film, chronopotentiometric, DC measurements IntroductionThin films of vanadium oxides have been extensively studied as electrodes for lithium electrochemical insertion. Owing to the usually high charge intercalation capacity of these films, they are highly promising as cathodes for secondary microbatteries 1 and electrochromic devices. 2 The interest in these oxides lies on their performance as high Li intercalation capacity, high potential, high energy density, good cycling performance and on the unusual double electrochromic effect. The latter is the appearance of an anodic coloration in the near-ultraviolet region and a cathodic coloration in the near-infrared region as Li is intercalated. 3 Amorphous and crystalline vanadium oxide thin film electrodes have been prepared using chemical...

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“…There are only few number of reports have been published, those include the study of oxidation behaviour of vanadium metal. 12,13 Since, it is mentioned above that vanadium metal has very low oxidation resistance and offers a great possibility of oxidation at relatively lower temperature. In most of the reports, metals including vanadium have oxidized in different ambients (i.e.…”

Section: Introductionmentioning

confidence: 99%

Oxidation of vanadium metal in oxygen plasma and their characterizations

et al. 2015

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In this report, the role of oxygen plasma on oxidation of vanadium (V) metal and the volatilization of its oxides has been studied as a function of source (V metal strip) temperature (Tss) and oxygen partial pressure (PO2). The presence of O2-plasma not only enhances the oxidation rate but also ficilitates in transport of oxide molecules from metal to substrate, as confirmed by the simultanous deposition of oxide film onto substrate. Both the oxidized metal strips and oxide films deposited on substrates are characterized separately. The structural and vibrational results evidence the presence of two different oxide phases (i.e. orthorhombic V2O5 and monocilinic V O2) in oxide layers formed on V metal strips, whereas the oxide films deposited on substrates exhibit only orthorhombic phase (i.e. V2O5). The decrease in peak intensities recorded from heated V metal strips on increasing Tss points out the increment in the rate of oxide volatilization, which also confirms by the oxide layer thickness measurements. The SEM results show the noticeable surface changes on V-strips as the function of Tss and PO2 and their optimum values are recorded to be 500 ˚C and 7.5 × 10−2 Torr, respectively to deposit maximum thick oxide film on substrate. The formation of microcracks on oxidized V-strips, those responsible to countinue oxidation is also confirmed by SEM results. The compositional study of oxide layers formed on V-strips, corroborates their pureness and further assures about the existence of mixed oxide phases. The effect of oxygen partial pressure on oxidation of V-metal has also been discussed in the present report. All the results are well in agreement to each other.

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Thin films of vanadium oxide grown on vanadium metal: oxidation conditions to produce V2O5 films for Li-intercalation applications and characterisation by XPS, AFM, RBS/NRA

Abstract: International audienc

Cited by 75 publications

References 46 publications

XPS study of Li ion intercalation in V2O5 thin films prepared by thermal oxidation of vanadium metal

XPS study of Li ion intercalation in V2O5 thin films prepared by thermal oxidation of vanadium metal

Li diffusion and electrochromism in amorphous and crystalline vanadium oxide thin film electrodes

Oxidation of vanadium metal in oxygen plasma and their characterizations

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