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Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
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  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .

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Raman spectroscopy studies of xNa(2)S+(1-X)B2S3 glasses and polycrystals

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Title
Raman spectroscopy studies of xNa(2)S+(1-X)B2S3 glasses and polycrystals
Author
Royle, MCho, JaephilMartin, SW
Keywords
SHORT-RANGE ORDER; BORATE GLASSES; VIBRATIONAL-SPECTRA; B-11 NMR; XNA2S+(1-X)B2S3 GLASSES; CRYSTAL-STRUCTURE; B2O3; B2S3; SCATTERING; RUBIDIUM
Issue Date
2001-02
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF NON-CRYSTALLINE SOLIDS, v.279, no.2-3, pp.97 - 109
Abstract
The Raman spectra of binary xNa2S+(1-x)B2S3 glasses and polycrystals have been measured for the first time and are used to develop a structural model of the sodium thioborate glasses. The Raman spectra confirm our previous infrared (IR) experimental conclusions that the structure of vitreous (ν-B2S3) is comprised of B3(0) groups and six-membered rings. It was also found that as sodium sulfide is added to the glass in the low alkali (x<0.35) glass forming region, the B4 groups are formed at the expense of the B3(0) groups first and then from the six-membered ring groups. The Raman spectra are also consistent with the presence of a pyramidal structural arrangement of B4 groups with trigonally coordinated sulfur atoms. This structure could explain the existence of the super-stoichiometric amounts of B4 groups found using nuclear magnetic resonance (NMR). Glasses in the high alkali region (0.50
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DOI
10.1016/S0022-3093(00)00344-6
ISSN
0022-3093
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ECHE_Journal Papers
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