کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7744879 | 1498247 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved ionic conductivity in NASICON-type Sr2Â + doped LiZr2(PO4)3
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Lithium ion conducting ceramics Li1 + 2xZr2 â xSrx(PO4)3 with x = 0-0.2 were synthesized via a sol-gel method using citric acid. The effects of Sr2 + substitution on the structure, microstructure, and conductivity of LiZr2(PO4)3 ceramics were studied. Rietveld refinement of powder XRD patterns showed that 5% of Sr2 + substitution for Zr4 + in LiZr2(PO4)3 stabilizes the rhombohedral (space group R3Ì
c) phase at room temperature. Sr2 + doped LiZr2(PO4)3 samples exhibited significantly improved ionic conductivity with Li1.2Zr1.9Sr0.1(PO4)3 showing highest conductivity of 0.34 Ã 10â 4 Ωâ1 cmâ 1 at room temperature. Activation energy was found to decrease from 0.56 eV for LiZr2(PO4)3 to 0.40 eV for Li1.4Zr1.8Sr0.2(PO4)3. Li+ transference number determined by DC polarization for Li1.2Zr1.9Sr0.1(PO4)3 was close to 1 confirming the ionic nature of conductivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 296, 15 November 2016, Pages 1-6
Journal: Solid State Ionics - Volume 296, 15 November 2016, Pages 1-6
نویسندگان
Sunil Kumar, Palani Balaya,