Structural investigation of (CuI)0.45–(Ag2WO4)0.55 solid electrolyte using X-ray photoelectron and laser Raman spectroscopies |
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Authors: | Y Daniel Premchand S Austin Suthanthiraraj |
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Institution: | Department of Energy, University of Madras, Guindy Campus, Chennai–600 025, India |
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Abstract: | X-ray photoelectron spectroscopy (XPS) and laser Raman scattering (LRS) techniques have been employed to investigate the structure of amorphous (CuI)0.45–(Ag2WO4)0.55 solid electrolyte sample. XPS results reveal the presence of both Cu+ and Cu2+ ions whereas tungsten is found to exist only in the oxidation state of +6. The deconvolution of the O 1s spectrum into non-bridging and bridging oxygen atoms in conjunction with the laser Raman analysis tend to show that the amorphous (CuI)0.45–(Ag2WO4)0.55 solid electrolyte sample is composed mostly of octahedral WO6 units that probably form W4O16]8− tetramer clusters, the existence of which is unique in the case of oxyhalide glasses. |
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Keywords: | Solid electrolyte Structure Laser Raman XPS |
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