Citation:
Gao Haichun, Sun Changmin, Huo Yan, Zhang Ruifeng, Li Xinglin. XPS Study of Lithium Ion Conducting Oxysulfids Glasses[J]. Chinese Journal of Applied Chemistry,
;1995, 12(4): 102-104.
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The structtiral unit of network and chemical state of constituent elements for the oxysulfide glasses in the system Li2S-B2O3-LiBr were studied by using X-ray photoelectron spectroscopy. The results indicate that sulfur in the form of S2- participates in network for-mation of glasses as coordinated ion and the glasses with R < 0.4 have no nonbridging sulfur ions. So,the binding energies(BE) of S2p do not show appreciable change with the variation of modifier Li2S content. However, when R≥0.4,BE of S2p significantly decreases with the addition of Li2S that is caused by the existence of the nonbridging sulfur ions. The binding energy of Li1s in the glasses is found to increase gradually with the increase of LiBr dopant content. This implies that LiBr is only dissolved in glass matrix entering the network inter-stitially as dissociated ions,and the Li- ions surrounded by Br- ions mainly take part in con-duction.
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Keywords:
- solid electrolyte,
- lithium ion conductor,
- oxysuifide glass,
- XPS
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