Crystalline phase content and ionic conductivity correlation in LATP glass-ceramic

Swati Soman, Yoshiki Iwai, Junichi Kawamura, Ajit Kulkarni

    研究成果: Article査読

    36 被引用数 (Scopus)

    抄録

    Li 2O-Al 2O 3-TiO 2-P 2O 5 (LATP) glass was fabricated by conventional melt quenching route. Glass transition temperature (T g=296 °C) and crystallization temperatures (T C1,2) were obtained from thermal analysis. LATP glass was converted to glass-ceramic by heat treatment in the range 550-950 °C for 6 h. X-ray diffraction analysis revealed LiTi 2(PO 4) 3 as a major phase. Ionic conductivity increased monotonically with concentration, reaching a maximum of ∼10 -4 S/cm. AlPO 4 phase was detected in samples heat-treated above 850 °C. Its presence decreased the conductivity, suggesting LiTi 2(PO 4) 3 phase as main contributor to high ionic conductivity. NMR spectra confirmed the presence of mobile 7Li ions in the entire sample series and also gave some information on the structure and dynamics of conductivity.

    本文言語English
    ページ(範囲)1761-1766
    ページ数6
    ジャーナルJournal of Solid State Electrochemistry
    16
    5
    DOI
    出版ステータスPublished - 2012 5

    ASJC Scopus subject areas

    • 材料科学(全般)
    • 凝縮系物理学
    • 電気化学
    • 電子工学および電気工学

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