کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1295908 1498304 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improving ionic conductivity of Li0.35La0.55TiO3 ceramics by introducing Li7La3Zr2O12 sol into the precursor powder
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Improving ionic conductivity of Li0.35La0.55TiO3 ceramics by introducing Li7La3Zr2O12 sol into the precursor powder
چکیده انگلیسی

Li0.35La0.55TiO3 (LLTO) powder was mixed with Li7La3Zr2O12 (LLZO) sol and finally sintered into ceramic pellets. In the low-temperature calcined precursor powder, Zr exists in the amorphous phase around LLTO aggregated particles. After high-temperature sintering, the LLZO phase does not exist, whereas Zr is doped into the LLTO grain interior but is richer in the grain boundary. The introduction of LLZO could modify the grain boundary region of the ceramics and thus change its electrical properties. The LLTO-based ceramics sintered at 1350 °C with 5 wt.% LLZO sol introduced in the precursor powder exhibit a high total conductivity of about 1.2 × 10− 4 S/cm at room temperature.


► LLTO ceramics exhibit a total conductivity of 1.2 × 10− 4 S/cm at room temperature.
► The brick layer model was used to calculate the specific grain boundary conductivity.
► The space-charge-layer effect was used to explain the enhancement on conductivity.
► A Li/LLTO–10 wt.% LLZO/Li configuration was assembled.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 235, 21 March 2013, Pages 8–13
نویسندگان
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