Vibrational study of lithium sulfate based fast ionic conducting borate glasses

Journal Article · Thu Sep 11 04:00:00 EDT 1986 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100410a010· OSTI ID:5344147

Kamitsos, E I; Karakassides, M A; Chryssikos, G D

The influence of the sulfate anion on the structure of the xLi/sub 2/O x yLi/sub 2/SO/sub 4/ x B/sub 2/O/sub 3/ fast ionic conducting glasses has been studied by Raman and Fourier-transform infrared spectroscopies, for compositions probing the whole glass-forming region (x = 0.20, 0.56; y = 0-0.50). Difference spectra are presented to elucidate the SO/sub 4//sup 2 -/-induced structural changes. Thus, for the x = 0.20 series, combined Raman and infrared results showed that Li/sub 2/SO/sub 4/ additions induce the formation of BO/sub 4/ tetrahedra. However, for high lithium oxide content ternary glasses (x = 0.56), while Raman spectra did not show obvious changes of the glass structure upon increasing y, infrared spectra clearly indicated that the numbers of BO/sub 4/ tetrahedra and nonbridging oxygen-containing borate groups both increase. It was concluded that the presence of SO/sub 4//sup 2 -/ anions, in the glass melt, favors the formation of borate groups, which are more polar than those of the corresponding binary glasses.

• Research Organization: National Hellenic Research Foundation, Athens, Greece
• OSTI ID: 5344147
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:19; ISSN JPCHA
• Country of Publication: United States
• Language: English

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ALKALI METAL COMPOUNDS
BORATES
BORON COMPOUNDS
CHALCOGENIDES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
GLASS
INFORMATION
INFRARED SPECTRA
LITHIUM COMPOUNDS
LITHIUM OXIDES
LITHIUM SULFATES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RAMAN SPECTRA
SPECTRA
SULFATES
SULFUR COMPOUNDS
VIBRATIONAL STATES