全面改善基于 Bi0.5Na0.5TiO3-NaNbO3 的弛豫反铁电体的储能和直流偏压特性

IF 8.4 1区 材料科学 Q1 CHEMISTRY, PHYSICAL
Ying Jiang , Jiaming Liu , Weichen Zhang , Xu Cheng , Kezhen hui , Yichao Zhen , Yanan Hao , Ke Bi , Limin Guo , Peiyao Zhao , Xiaohui Wang
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Comprehensively improved energy storage and DC-bias properties in Bi0.5Na0.5TiO3NaNbO3 based relaxor antiferroelectric

Comprehensively improved energy storage and DC-bias properties in Bi0.5Na0.5TiO3NaNbO3 based relaxor antiferroelectric
Dielectric pulse capacitors are of great concerns due to the fast charge/discharge rate and high-power density over traditional counterparts. However, energy-storage capacitor in power converters typically works at a large DC-biased voltage, where the energy-storge density (Wdis) and efficiency (η) will dramatically decay, thus fatally blocks its further applications. Herein, we proposed a synergistic strategy to achieve a comprehensively improved energy storage property in Bi1–xNaxTiO3-NaNbO3 based ceramics. Configuration of chemical composition optimization, A-site vacancy engineering, grain size refinement, and sample thickness reduction were designed in the ceramics. Finally, an optimum Wdis of 8.04 J/cm3 and an ultrahigh η of 85% was achieved for the 0.50 (0.95Bi0.52Na0.44TiO3-0.05SrZrO3)-0.50NaNbO3 composite under a breakdown strength of 630 kV/cm, along with a stable DC-biased capacitance retention. Additionally, a superior performance stability was affirmed in a wide temperature/frequency range (25–150 °C and 1–100 Hz, respectively). It also exhibits an impressive ability in fatigue resistance after being subjected to up to 106 cycles, which enable it to be a suitable candidate for high energy density storage devices.
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来源期刊
Journal of Materiomics
Journal of Materiomics Materials Science-Metals and Alloys
CiteScore
14.30
自引率
6.40%
发文量
331
审稿时长
37 days
期刊介绍: The Journal of Materiomics is a peer-reviewed open-access journal that aims to serve as a forum for the continuous dissemination of research within the field of materials science. It particularly emphasizes systematic studies on the relationships between composition, processing, structure, property, and performance of advanced materials. The journal is supported by the Chinese Ceramic Society and is indexed in SCIE and Scopus. It is commonly referred to as J Materiomics.
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