Enhanced energy-storage properties of 0.89Bi 0.5 Na 0.5 TiO 3 –0.06BaTiO 3 –0.05K 0.5 Na 0.5 NbO 3 lead-free anti-ferroelectric ceramics by two-step sintering method

Ding, Jianxiang; Liu, Yunfei; Lü, Yinong; Qian, Hao; Gao, Hong; Hu, Chen; Ma, Chengjian

doi:10.1016/j.matlet.2013.09.103

Cited by 136 publications

(27 citation statements)

References 27 publications

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“…Ding et al reported the enhancement of energy storage density in lead-free 0.89Bi 0.5 Na 0.5 TiO 3 -0.06BaTiO 3 -0.05K 0.5 Na 0.5 NbO 3 ceramics [69]. This was achieved through a two-step sintering technique.…”

Section: Influence Of Other Factorsmentioning

confidence: 99%

Anti-Ferroelectric Ceramics for High Energy Density Capacitors

et al. 2015

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With an ever increasing dependence on electrical energy for powering modern equipment and electronics, research is focused on the development of efficient methods for the generation, storage and distribution of electrical power. In this regard, the development of suitable dielectric based solid-state capacitors will play a key role in revolutionizing modern day electronic and electrical devices. Among the popular dielectric materials, anti-ferroelectrics (AFE) display evidence of being a strong contender for future ceramic capacitors. AFE materials possess low dielectric loss, low coercive field, low remnant polarization, high energy density, high material efficiency, and fast discharge rates; all of these characteristics makes AFE materials a lucrative research direction. However, despite the evident advantages, there have only been limited attempts to develop this area. This article attempts to provide a focus to this area by presenting a timely review on the topic, on the relevant scientific advancements that have been made with respect to utilization and development of anti-ferroelectric materials for electric energy storage applications. The article begins with a general introduction discussing the need for high energy density capacitors, the present solutions being used to address this problem, and a brief discussion of various advantages of anti-ferroelectric materials for high energy storage applications. This is followed by a general description of anti-ferroelectricity and important anti-ferroelectric materials. The remainder of the paper is divided into two subsections, the first of which presents various physical routes for enhancing the energy storage density while the latter section describes chemical routes for enhanced storage density. This is followed by conclusions and future prospects and challenges which need to be addressed in this particular field.

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Section: Influence Of Other Factorsmentioning

confidence: 99%

Anti-Ferroelectric Ceramics for High Energy Density Capacitors

et al. 2015

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“…It possesses high Curie temperature (T c = 320 • C), relatively large remnant polarization (P r = 38 C/cm 2 ) and high coercive field (E c = 73 kV/cm) at room temperature [1][2][3]. In recent years, BNT-based dielectric ceramics as a new kind of energy-storage material have attracted extensive interest of researchers [4][5][6]. Its energy-storage density has been enhanced to more than 1 J/cm 3 at medium electric field (∼10 kV/mm) through different modification methods, such as doping, forming solid solution, optimizing sintering process and so on [5,[7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Electrical properties and relaxation behavior of Bi0.5Na0.5TiO3-BaTiO3 ceramics modified with NaNbO3

Lanagan

Luo

et al. 2016

Journal of the European Ceramic Society

111

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“…Ferroelectric ceramics, which intrinsically possess high polarization, have nowadays been explored as high‐energy‐density candidates, while it is still challenging in terms of the reduction of energy loss and also the enhancement of ultimate breakdown strength. It is commonly accepted that dielectric breakdown is strongly microstructure dependent, and large endeavors have been made regarding the improvement of microstructure through the enhancement of processing technologies . In a way to get high dielectric breakdown strength, the modification of the ceramic microstructure through the concept of “core–shell” composite structure, that is, via artificially encapsulating the ferroelectric grains with more breakdown resistant material (typically linear dielectrics, i.e., polymer, silica, or alumina) has recently emerged, and results show that through the introduction of the shell, simultaneously enhanced energy density and reduced energy loss can be achieved.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Energy Density in Core–Shell Ferroelectric Ceramics: Modeling and Practical Conclusions

Wang

2015

J. Am. Ceram. Soc.

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A microstructure‐level model of the core–shell‐structured ferroelectric ceramics was developed through the voronoi tessellation random construction routine. Assuming the shell is linear dielectric and parameterizing the ferroelectric core with a classical and a modified hyperbolic tangent model, finite element method was applied to solve the resulting systems. Statistics of electric field spatial distribution indicate that increasing applied electric field leads to intensified field fluctuation while this effect is weakened through the incorporation with thicker shell. Energy density extracted from the as‐calculated hysteresis loops possesses an optimal value with regard to the shell fraction. Calculation results show that enhancing the saturation polarization and lowering the remnant polarization of the core, as well as modulating the shell fraction within a favorable range, provide the most effective way to obtain high‐energy‐density ceramics. Reducing the core initial and the shell permittivity benefits the energy efficiency. The underlying mechanisms of the enhanced energy density and reduced energy loss in the core–shell ferroelectric ceramics were discovered to be the trade‐offs between the lowered polarization and the weakened dielectric nonlinearity as a consequence of the dilution and depolarization of the shell. This model can guide the engineering of core–shell‐structured ferroelectric ceramics for energy storage.

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Enhanced energy-storage properties of 0.89Bi 0.5 Na 0.5 TiO 3 –0.06BaTiO 3 –0.05K 0.5 Na 0.5 NbO 3 lead-free anti-ferroelectric ceramics by two-step sintering method

Cited by 136 publications

References 27 publications

Anti-Ferroelectric Ceramics for High Energy Density Capacitors

Anti-Ferroelectric Ceramics for High Energy Density Capacitors

Electrical properties and relaxation behavior of Bi0.5Na0.5TiO3-BaTiO3 ceramics modified with NaNbO3

Enhanced Energy Density in Core–Shell Ferroelectric Ceramics: Modeling and Practical Conclusions

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