钽酸钠掺杂诱导无铅（Bi0.5Na0.5） 0.94Ba0.06TiO3陶瓷的相结构调控及电性能增强

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Current Applied Physics Pub Date : 2025-01-20 DOI:10.1016/j.cap.2025.01.013

Juanjuan Wang , Pengkang Ma , Qizhen Chai , Fusheng Lai , Hongliang Du , Li Jin , Zhanhui Peng , Xiaolian Chao , Tianyi Yang

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引用次数: 0

摘要

陶瓷具有优异的储能性能，作为电容器的介质层，是构建高性能电容器的关键。在这项研究中，我们设计并表征了具有增强储能能力的（1-x） (0.94Bi0.5Na0.5Ti03-0.06BaTiO3)-xNaTaO3 （BNBT-xNT）无铅陶瓷。naao3的掺入诱导了从非极性弛豫相到极性弛豫相的转变，并将纳米畴转化为纳米微畴。在250 kV/cm的电场作用下，0.92 BNBT-0.08NT陶瓷具有较高的有效储能密度Wrec （3.07 J/cm3）和储能效率η(68%)。此外，这些陶瓷具有显著的放电能量密度Wd (1.1 J/cm3)，高功率密度PD （75 MW/cm3）和快速充放电速度t0.9 （258 ns）。在储能性能方面的优异稳定性表明BNBT-0.08NT陶瓷在脉冲功率应用方面具有巨大的潜力。

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Sodium Tantalate doping-induced phase structure Regulation and electrical property enhancement in lead-free (Bi0.5Na0.5) 0.94Ba0.06TiO3 ceramics

Ceramics with superior energy storage properties, serving as the dielectric layer of capacitors, are crucial for constructing high performance capacitors. In this study, we designed and characterized (1-x) (0.94Bi_0.5Na_0.5Ti0₃-0.06BaTiO₃)-xNaTaO₃ (BNBT-xNT) lead-free ceramics with enhanced energy storage capabilities. The incorporation of NaTaO₃ induced a transition from non-polar to polar relaxation phase and transformed nano-domains into nano-micro domains. Under an applied electric field of 250 kV/cm, the 0.92 BNBT-0.08NT ceramics exhibited significantly higher effective energy storage density W_rec (3.07 J/cm³) and energy storage efficiency η (68 %). Moreover, these ceramics demonstrated remarkable discharge energy density W_d (1.1 J/cm³), high power density P_D (75 MW/cm³), and fast charge and discharge speed t_0.9 (258 ns). The exceptional stability in terms of energy storage performance suggests that BNBT-0.08NT ceramics hold great potential for pulse power applications.

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.