Crystallization Process for Superionic Li7P3S11 Glass-Ceramic Electrolytes

The crystallization process of the 70Li2S·30P2S5 (mol%) glass was investigated to obtain a guideline for enhancing the crystallinity of Li7P3S11 crystals in a glass–ceramic. Results show that the glass softened at around 240°C and that surface crystallization of the glass started at around 250°C. Th...

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Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 94; no. 6; pp. 1779 - 1783
Main Authors Minami, Keiichi, Hayashi, Akitoshi, Tatsumisago, Masahiro
Format Journal Article
LanguageEnglish
Published Malden, USA Blackwell Publishing Inc 01.06.2011
Subjects
Crystallinity
Crystallization
Differential scanning calorimetry
Glass
Glass ceramics
Guidelines
Heat treatment
Nucleation
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Summary:The crystallization process of the 70Li2S·30P2S5 (mol%) glass was investigated to obtain a guideline for enhancing the crystallinity of Li7P3S11 crystals in a glass–ceramic. Results show that the glass softened at around 240°C and that surface crystallization of the glass started at around 250°C. The heat‐treatment conditions with a maximum nucleation rate for the glass were estimated using DSC measurements. The glass–ceramic prepared using two‐step heat treatment of 210°C for 30 min (nucleation) and 280°C for 1 h (crystallization) exhibited high conductivity of 5.2 × 10−3 S/cm at room temperature.
Bibliography:ArticleID:JACE4335
istex:DFAF8D492A785586EFA02276C315851B1BF71CD1
ark:/67375/WNG-62M29VBM-X
L. Pinckney—contributing editor
This work was supported by a Grant‐in‐Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology of Japan.
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ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2010.04335.x