Observation of non-ideal lithium insertion into sputtered thin films of tungsten oxide

Burdis, M. S.; Siddle, John R.

doi:10.1016/0040-6090(94)90279-8

Cited by 38 publications

(17 citation statements)

References 13 publications

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“…As reported in Fig. 6(b), there is significant irreversibility during the first cycles, possibly as a consequence of irreversible Li incorporation [39]. The film displays large irreversibility particularly for cycle numbers around 50.…”

Section: Cyclic Voltammetrymentioning

confidence: 64%

Electrochromism in sputter-deposited W–Ti oxide films: Durability enhancement due to Ti

Arvizu

Triana

Stefanov

et al. 2014

Solar Energy Materials and Solar Cells

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Electrochromism in sputter-deposited W-Ti oxide films: Durability enhancement due to Ti. Solar Energy Materials and Solar AbstractThin films of W-Ti oxide were prepared by reactive DC magnetron sputtering and were characterized by Rutherford backscattering spectrometry, X-ray diffraction, scanning electron microscopy and atomic force microscopy. The electrochromic properties were studied by cyclic voltammetry in an electrolyte of lithium perchlorate in propylene carbonate and by optical transmittance measurements. The addition of Ti significantly promoted the amorphous nature of the films and stabilized their electrochemical cycling performance and dynamic range for electrochromism.

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Section: Cyclic Voltammetrymentioning

confidence: 64%

Electrochromism in sputter-deposited W–Ti oxide films: Durability enhancement due to Ti

Arvizu

Triana

Stefanov

et al. 2014

Solar Energy Materials and Solar Cells

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“…[1][2][3] Coatings have been produced by a wide variety of techniques including solgel, [4][5][6] spin-coating, [7] electrochemical deposition, [8] vacuum physical vapour deposition (PVD), [9][10][11][12][13] thermal chemical vapour deposition (CVD) [14,15] and spray pyrolysis. [16][17][18] Solution methods are widely used but can result in film structural and durability constraints.…”

Section: Introductionmentioning

confidence: 99%

Growth of Thin Films of Molybdenum and Tungsten Oxides by Combustion CVD Using Aqueous Precursor Solutions

Davis

Benito

Sheel

et al. 2004

Chemical Vapor Deposition

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Using combustion chemical vapour deposition, layers of molybdenum and tungsten oxides have been deposited on glass and silicon at low temperatures. Inexpensive ammonium salts of molybdate and metatungstate ions were used as precursors and were delivered to the coating flame as an aqueous solution using a nebuliser. The resulting films were analysed by scanning electron microscopy (SEM), energy dispersive analysis of X-rays (EDAX), Rutherford backscattering (RBS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD).These indicate that the films are continuous, moderately smooth and consist of amorphous, disordered molybdenum and tungsten trioxides.

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“…However, this possibility has been ruled out on the basis of infrared measurements. 2,4 Other suggestions are singly coordinated oxygen atoms, 7 peroxotype links ͑W-O-O-W͒, 2 and the presence of gaseous oxygen. 2 In a recent study, Vink et al have determined experimentally that lithium trapping is associated with the excess oxygen content y of the film (WO 3ϩy ).…”

Section: Introductionmentioning

confidence: 99%

“…2,4 Other suggestions are singly coordinated oxygen atoms, 7 peroxotype links ͑W-O-O-W͒, 2 and the presence of gaseous oxygen. 2 In a recent study, Vink et al have determined experimentally that lithium trapping is associated with the excess oxygen content y of the film (WO 3ϩy ). 5 In their films, all irreversibly intercalated lithium was trapped in the first coloration/bleaching cycle.…”

Section: Introductionmentioning

confidence: 99%

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Lithium trapping by excess oxygen inWO3:A first-principles study

Wijs¹,

Groot

2000

Phys. Rev. B

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The process of lithium trapping by excess oxygen atoms in both crystalline and amorphous WO 3 is studied by first-principles calculations. In both materials, the excess oxygen is incorporated in the bonding network by a peroxide-type bond. In both c-WO 3 and a-WO 3 , breaking of this bond makes oxygen states available for the accommodation of the Li electrons. However, only in a-WO 3 is this mechanism accompanied by a strong reduction in total energy as this material has the flexibility to accommodate ͑incorporate͒ the extra O 2Ϫ ion.

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Observation of non-ideal lithium insertion into sputtered thin films of tungsten oxide

Cited by 38 publications

References 13 publications

Electrochromism in sputter-deposited W–Ti oxide films: Durability enhancement due to Ti

Electrochromism in sputter-deposited W–Ti oxide films: Durability enhancement due to Ti

Growth of Thin Films of Molybdenum and Tungsten Oxides by Combustion CVD Using Aqueous Precursor Solutions

Lithium trapping by excess oxygen inWO3:A first-principles study

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