کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7991212 | 1516137 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of Nb5+, Ti4+, Y3+ and Zn2+ doped Na3Zr2Si2PO12 solid electrolyte on its conductivity
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, Na3Zr2-xNb0.8xSi2PO12, Na3Zr2-xTixSi2PO12, Na3Zr2-xYxSi2PO12-0.5x, Na3Zr2-xZnxSi2PO12-x ceramics with x = 0.1, 0.2, 0.3 and 0.4 were sintered to explore the influence of the valence state and the content of dopants on the conductivity of NASICON solid electrolyte. Archimedes method, X-ray diffraction, scanning electron microcopy and complex impedance spectroscopy were used to characterize the sintered samples. Results show that the dopant with +2 oxidation state cations improves the bulk conductivity mainly due to the less electrostatic interactions between Zn2+ ions and Na+ ions. The optimal doping content of Nb5+, Ti4+ and Y3+ doped NASICON ceramics is 0.1â¯mol and that of Zn2+ doped NASICON ceramic is 0.2â¯mol for the highest ionic conductivity. Among all the doped NASICON ceramics, Na3Zr1.8Zn0.2Si2PO11.8 ceramic displays the highest total conductivity of 1.44â¯Ãâ¯10â3â¯S/cm and bulk conductivity of 3.41â¯Ãâ¯10â3â¯S/cm at room temperature. Furthermore, doping strategy both increases the density and decreases the sintering temperature of Na3Zr2Si2PO12 ceramic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 757, 15 August 2018, Pages 348-355
Journal: Journal of Alloys and Compounds - Volume 757, 15 August 2018, Pages 348-355
نویسندگان
Dan Chen, Fa Luo, Wancheng Zhou, Dongmei Zhu,