| Autor: |
Shirbhate, Shraddha, Badekar, Twinkle, Gaikwad, Vishwajit, Acharya, Smita |
| Předmět: |
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| Zdroj: |
Ferroelectrics; 2023, Vol. 617 Issue 1, p146-156, 11p |
| Abstrakt: |
Solid Electrolytes (SOE) with high ionic conductivity highly desirable in order to improve the efficiency of SOFCs at lower functioning temperature range) (350–500 °C). Triple perovskite Ba3SrNb2O9 based proton ion conductor have up-and-coming to enhance ionic conductivity at Low temperature range (LT) (350–500 °C). With this motivation we have successfully synthesized Ba3SrNb2O9 (BSNO) by solgel combustion method. Powder X-ray diffraction (XRD) confirms the formation of Triclinic crystal structure having space group P1, having lattice dimensions (a = 5.89340 Å, b = 5.88760 Å, c = 7.27360 Å). Rietveld Refinement of XRD data was carried out to get detail structural information by Full-Prof suite software. Electrical performance of the BSNO system were systematically studied by Electrochemical Impedance spectroscopy at functioning temperature 350–500 °C with interval of 50 °C. BSNO system exhibit conductivity of the order of 5.8 × 10−3 Scm−1 at 500 °C with the activation energy of the range of 0.48 eV. Charge Relaxations phenomenon very systematically explored by impedance loss spectra and it is very correlate with Modulus (M") as a function of frequency at several temperatures which used to clarify the charge relaxation dynamics in proton ion conducting BSNO material. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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