Structural role of PbO in Li{sub 2}O-PbO-B{sub 2}O{sub 3} glasses
Journal Article
·
· Journal of Solid State Chemistry
- Indian Inst. of Science, Bangalore (India). Solid State and Structural Chemistry Unit
There is a renewed interest in the investigation of glasses which have potential as electrolytes for lithium batteries. Thermal and spectroscopic studies have been carried out on a number of glasses with wide ranging compositions in the pseudoternary glass system Li{sub 2}O-PbO-B{sub 2}O{sub 3} in order to understand the structural role of PbO in these glasses. Infrared, Raman, and {sup 11}B MAS-NMR results indicate that PbO behaves as a network former in these glasses and is possibly incorporated in the network as [PbO{sub 4/2}]{sup 2{minus}} units. The formation of [PbO{sub 4/2}]{sup 2{minus}} units leads to the creation of neutral three-coordinated boron (B{sub 3}{sup 0}) which, in turn, leads to the reformation of four-coordinated boron (B{sub 4}{sup {minus}}) in the structure at the expense of two-coordinated (B{sub 2}{sup {minus}}) and singly coordinated (B{sub 1}{sup 2{minus}}) boron atoms. The variations of glass transition temperatures (T{sub g}) and molar volumes also support this model. 53 refs., 4 figs., 4 tabs.
- OSTI ID:
- 679220
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 145; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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