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Ferroelectrics Volume 615, 2023 - Issue 1
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Research Article

Energy storage properties of KNb0.6Ta0.4O3 modified (Na0.5Bi0.5)0.7Sr0.3TiO3 ceramics

Lingyun Denga School of Mechatronics and Information Engineering, Chongqing College of Humanities, Science and Technology, Chongqing, PR China
,
Hua Qianga School of Mechatronics and Information Engineering, Chongqing College of Humanities, Science and Technology, Chongqing, PR China
,
Xiaoyang Wanga School of Mechatronics and Information Engineering, Chongqing College of Humanities, Science and Technology, Chongqing, PR China
&
Zunping Xub School of Materials and Energy, Southwest University, Chongqing, PR ChinaCorrespondence[email protected]
Pages 1-7 | Received 30 May 2023, Accepted 23 Jul 2023, Published online: 28 Nov 2023
 
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Abstract

Lead-free (1–x)(Na0.5Bi0.5)0.7Sr0.3TiO3–xKNb0.6Ta0.4O3 ((1−x)NBST–xKNT, x = 0–0.3) ceramics were synthesized via citrate combustion process. The addition of KNT reduces the grain size, decreases the remanent polarization (Pr), and slimmer hysteresis loops are realized. (1−x)NBST–xKNT ceramics exhibit typical relaxor characteristics as x increases. A large recoverable energy storage density (Wre ∼ 1.74 J/cm3) and high efficiency (η ∼ 87%) are obtained for 0.8NBST–0.2KNT ceramic sample at 150 kV/cm. The energy-storage performances of 0.8NBST–0.2KNT sample show excellent temperature stability (Wre varies 9.7% and η varies 2.3% within 25–75 °C).

Disclosure Statement

No potential conflict of interest was reported by the author(s).

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