Preparation, characterization and stability of Li-ion conducting Li۱.۵Al۰.۵Ge۱.۵(PO۴)۳ glass-ceramic with NASICON-type structure

سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 196

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شناسه ملی سند علمی:

JR_ACERPT-2-1_007

تاریخ نمایه سازی: 11 اردیبهشت 1400

چکیده مقاله:

A conducting lithium aluminum germanium phosphate (LAGP) glass-ceramic with a formula of Li۱.۵Al۰.۵Ge۱.۵(PO۴)۳ was synthesized by melt-quenching method and subsequent crystallization at ۸۵۰ °C for ۸ h. The prepared glass-ceramic was characterized using differential scanning calorimetry (DSC), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and AC impedance techniques. The XRD patterns exhibited the existence of LiGe۲(PO۴)۳ as the dominant phase with a little impurity phase of GeO۲. SEM images revealed the presence of large LAGP crystals. A high conductivity of ۵.۳۶×۱۰-۳ S/cm at ۲۵ °C was obtained for the pristine LAGP. Furthermore, the stability of the LAGP was examined in ۱ M LiNO۳ aqueous solution by XRD and conductivity measurements. XRD pattern and ionic conductivities of the immersed LAGP showed no change as compared with the pristine LAGP, showing the good stability in aqueous electrolyte and great potential for aqueous lithium-air battery application.

نویسندگان

Mohammad Illbeigi

Department of Chemical Engineering, Arak University

Alireza Fazlali

Department of Chemical Engineering, Arak University

Amir.H. Mohammadi

Institut de Recherche en Génie Chimique et Pétro, Paris Cedex