Degradation of electrochromic amorphous WO sub 3 film in lithium-salt electrolyte

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Journal of the Electrochemical Society; (USA)

DOI:https://doi.org/10.1149/1.2086652· OSTI ID:6729956

Hashimoto, S; Matsuoka, H; Kagechika, H ^[1]; Susa, M; Goto, K S ^[2]

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1. Steel Research Center, NKK Corp., Minamawatarida 1-1, Kawasaki, Kanagawa 210 (JP)
2. Tokyo Inst. of Tech. (Japan)

The electrochromic behavior of amorphous WO{sub 3} films prepared by electron-beam deposition has been studied. SIMS analysis has revealed the lithium accumulates in amorphous WO{sub 3} films during reversible coloring and bleaching in propylene carbonate solution of LiClO{sub 4}. When a large quantity of lithium has been injected into WO{sub 3} films, an absorption spectrum different from tungsten bronze is observed. In these films, lithium tungstate has been observed using x-ray photoelectron spectroscopy and x-ray diffraction analysis. It has been concluded that the degradation of electrochromism of amorphous WO{sub 3} is caused by the formation of stable lithium tungstate.

• OSTI ID: 6729956
• Journal Information: Journal of the Electrochemical Society; (USA), Journal Name: Journal of the Electrochemical Society; (USA) Vol. 137:4; ISSN JESOA; ISSN 0013-4651
• Country of Publication: United States
• Language: English

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ALKALI METALS
AMORPHOUS STATE
BEAM INJECTION
CHALCOGENIDES
COHERENT SCATTERING
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ELECTRO-OPTICAL EFFECTS
ELECTROCHROMISM
ELECTROLYTES
ELECTRON BEAM INJECTION
ELEMENTS
FILMS
LITHIUM
METALS
OXIDES
OXYGEN COMPOUNDS
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SOLID ELECTROLYTES
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TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
X-RAY DIFFRACTION