کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7740278 | 1497992 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lithium ion transport properties of high conductive tellurium substituted Li7La3Zr2O12 cubic lithium garnets
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
In this paper synthesis, structure and Li+ transport process of Li7â2xLa3Zr2âxTexO12 (x = 0.125 and 0.25) lithium garnets are reported. Preparation of high Li+ conductive Li7La3Zr2O12 (LLZ) in cubic phase by conventional solid state method demands sintering it around 1200 °C for 36 h in Al2O3 crucible. Cubic phase lithium garnet is successfully obtained at lower sintering temperature around 750 °C with the substitution of Zr4+ by Te6+ in the garnet lattice over the investigated composition range. Among the investigated compounds Li6.5La3Zr1.75Te0.25O12 sintered at 1100 °C exhibits a maximum room temperature total (bulk + grain boundary) ionic conductivity of 1.02 Ã 10â3 S cmâ1. The present studies reveal the stabilization of the cubic garnet phase relatively at lower sintering temperature along with an enhancement in Li+ conductivity with lithium content lesser than 7 by suitable doping in Li7La3Zr2O12.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 240, 15 October 2013, Pages 18-25
Journal: Journal of Power Sources - Volume 240, 15 October 2013, Pages 18-25
نویسندگان
C. Deviannapoorani, L. Dhivya, S. Ramakumar, Ramaswamy Murugan,