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
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Lithium ion transport properties of high conductive tellurium substituted Li7La3Zr2O12 cubic lithium garnets
چکیده انگلیسی
In this paper synthesis, structure and Li+ transport process of Li7−2xLa3Zr2−xTexO12 (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 × 10−3 S cm−1. 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
نویسندگان
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