کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7886693 | 1509788 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
MgO-modified Sr0.7Ba0.3Nb2O6 ceramics for energy storage applications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We explored the phase structure, microstructure, dielectric and energy storage properties of MgO-modified strontium barium niobate Sr0.7Ba0.3Nb2O6-xwt%MgO (SBNMx; xâ¯=â¯0-5) ceramics fabricated via conventional solid-state sintering precess. X-ray diffraction analysis indicates Mg2+ incorporates into lattice at xâ¯=â¯0.5 and secondary phases come into formation for samples at xâ¯â¥â¯1, which results in the decrease of dielectric constant. There is also significant reduction of dielectric loss up to 0.002. Compared with pure SBN ceramics, the grain size of SBNMx ceramics becomes denser and more uniform, moreover, the dielectric breakdown strength shows increasing trend from 137â¯kV/cm to 226â¯kV/cm, which is in favor of the energy storage. SBNM0.5 ceramics presents the optimal energy storage performance: energy storage density of 0.93â¯J/cm3 and energy storage efficiency of 89.4% at 157â¯kV/cm, indicating that SBNM ceramics are prospective candidates for high voltage capacitor applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 10, July 2018, Pages 11022-11029
Journal: Ceramics International - Volume 44, Issue 10, July 2018, Pages 11022-11029
نویسندگان
Yun Rao, Hanxing Liu, Hua Hao, Zhonghua Yao, Xingxing Zhou, Minghe Cao, Zhiyong Yu,