Analysis of the structure and degree of crystallisation of 70Li2S–30P2S5 glass ceramic. Issue 6 (19th December 2014)

• Record Type: Journal Article
• Authors: Seino, Yoshikatsu; Nakagawa, Masaru; Senga, Minoru; Higuchi, Hiroyuki; Takada, Kazunori; Sasaki, Takayoshi
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 6(2015)
• Page Start: 2756
• Page End: 2761
• Publication Date: 2014-12-19
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c4ta04332d
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Structural analysis of 70Li2 S–30P2 S5 glass ceramic by 31 P MAS NMR revealed a strong correlation between the degree of crystallisation and the lithium ionic conductivity. Abstract : Heat treatment of Li2 S–P2 S5 glasses to transform the glass to a glass ceramic enhances the ionic conductivity by precipitating a Li7 P3 S11 metastable crystalline phase with high ionic conductivity. Although the precipitated phase is identical, the conductivity achieved varies depending on the heat treatment conditions. Solid-state 31 P MAS NMR spectroscopy to investigate the structure of the glass ceramic in this study revealed a strong correlation between the ionic conductivity and the degree of crystallisation, in which the conductivity of the glass ceramic increased with increasing proportion of metastable Li7 P3 S11 phase.