High Energy Storage and Excellent Thermal Stability in Ternary (1−x)[0.94(Bi<subscript>0.5</subscript>Na<subscript>0.5</subscript>)TiO<subscript>3</subscript>‐0.06BaTiO<subscript>3</subscript>]‐xCa(Mg<subscript>1/3</subscript>Nb<subscript>2/3</subscript>)O<subscript>3</subscript> Lead‐Free Ferroelectric Ceramics.
In: Advanced Electronic Materials, Jg. 10 (2024-03-01), Heft 3, S. 1-11
Online
academicJournal
Zugriff:
In this work, a new type of ternary lead‐free ferroelectric ceramics (1−x)[0.94(Bi0.5Na0.5)TiO3‐0.06BaTiO3]‐xCa(Mg1/3Nb2/3)O3 is synthesized by traditional solid‐state reaction method (x = 0.02, 0.04, 0.06, 0.07, 0.08, 0.10, and 0.15). No phase transition is detected and all ceramics exhibited the perovskite structure consisting of the rhombohedral (R3c) and tetragonal (P4bm) phases. By increasing the Ca(Mg1/3Nb2/3)O3(CMN) content, the average grain size shows a slight change. More specifically, the grain size is 1.00 µm when x < 0.10 and then increases to 1.20 µm in x = 0.10 and 0.15. When x = 0.07, an optimum energy storage performance with recoverable energy density (Wrec) of 4.13 J cm−3 is achieved under an electric field of 340 kV cm−1. At the same time, it exhibits excellent pulse performance at 25 °C, with an effective discharging time (t0.9) of 3.2 ns and a discharge energy density (WD) of 0.61 J cm−3, suggesting a fast charging–discharging rate. In addition, the current density (CD) and power density (PD) are 92.31 A cm−2 and 6.46 MW cm−3, respectively. Overall, the 0.93[0.94(Bi0.5Na0.5)TiO3‐0.06BaTiO3]‐0.07Ca(Mg1/3Nb2/3)O3 ceramics is considered a competitive candidate for the development of high‐energy storage capacitors and pulse‐power devices. [ABSTRACT FROM AUTHOR]
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Titel: |
High Energy Storage and Excellent Thermal Stability in Ternary (1−x)[0.94(Bi<subscript>0.5</subscript>Na<subscript>0.5</subscript>)TiO<subscript>3</subscript>‐0.06BaTiO<subscript>3</subscript>]‐xCa(Mg<subscript>1/3</subscript>Nb<subscript>2/3</subscript>)O<subscript>3</subscript> Lead‐Free Ferroelectric Ceramics.
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Autor/in / Beteiligte Person: | Kuang, Haiyan ; He, Xiang ; Oleg, V'yunov ; Pang, Dongfang |
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Zeitschrift: | Advanced Electronic Materials, Jg. 10 (2024-03-01), Heft 3, S. 1-11 |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 2199-160X (print) |
DOI: | 10.1002/aelm.202300590 |
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