无铅[(Na1−3x/2Bi3x/2) (Nb1−xSrx) O3]陶瓷的储能特性研究

IF 2.6 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Electroceramics Pub Date : 2025-04-29 DOI:10.1007/s10832-025-00401-4

Aman Malasi, M. Chandrasekhar, Ankur Khokhar, Shivam Kumar Mittal, Amiya Mandal, Kanhaiya Lal Yadav, Nibedan Nanda, Pawan Kumar

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引用次数: 0

摘要

本研究通过固相反应途径合成了x = 0.00, 0.04, 0.05, 0.06, 0.07, 0.08的n基无铅陶瓷[Na1−3x/2Bi3x/2) (Nb1−xSrx) O3]。XRD研究证实，随着掺杂浓度的增加，二次相的形貌增加。FE-SEM研究表明，随着掺杂浓度的增加，平均晶粒尺寸减小。在1 kHz频率下，[(Na0.91Bi0.09) (Nb0.94Sr0.06) O3]陶瓷在Tc附近的介电常数（εr）⁓1051，介电损耗（tanδ） < 0.6。对[(Na0.91Bi0.09) (Nb0.94Sr0.06) O3]陶瓷进行极化与电场的铁电研究表明，合成陶瓷的总储能密度（Wtotal）最高，为~ 1.74 J/cm³，可回收储能密度（Wrec）最高，为~ 1.28 J/cm³，在145 kV/cm的电场下，效率（η）为~ 74%。

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Exploring energy storage characteristics of lead-free [(Na1 − 3x/2Bi3x/2) (Nb1 − xSrx) O3] ceramics

In this work, NN-based lead-free ceramics [Na_{1 − 3x/2}Bi_3x/2) (Nb_1 − xSr_x) O₃] where x = 0.00, 0.04, 0.05, 0.06, 0.07, and 0.08 were synthesized via solid-state reaction route. XRD study confirmed the increase of the appearance of secondary phase with the increase of doping concentrations. FE-SEM study showed the decrease of average grain size with the increase of doping concentration. Dielectric study showed dielectric constant (ε_r) ⁓ 1051 with low dielectric loss (tanδ) < 0.6 near T_c in [(Na_0.91Bi_0.09) (Nb_0.94Sr_0.06) O₃] ceramics at 1 kHz frequency. Polarization vs. electric field ferroelectric study of [(Na_0.91Bi_0.09) (Nb_0.94Sr_0.06) O₃] ceramics demonstrated the highest total energy storage density (W_total) of ~ 1.74 J/cm³ with a high recoverable energy storage density (W_rec) of ~ 1.28 J/cm³, with an efficiency (η) ~ 74% at an electric field of 145 kV/cm among the synthesized ceramics.

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来源期刊

Journal of Electroceramics 工程技术-材料科学：硅酸盐

CiteScore

2.80

自引率

5.90%

发文量

审稿时长

5.7 months

期刊介绍： While ceramics have traditionally been admired for their mechanical, chemical and thermal stability, their unique electrical, optical and magnetic properties have become of increasing importance in many key technologies including communications, energy conversion and storage, electronics and automation. Electroceramics benefit greatly from their versatility in properties including: -insulating to metallic and fast ion conductivity -piezo-, ferro-, and pyro-electricity -electro- and nonlinear optical properties -feromagnetism. When combined with thermal, mechanical, and chemical stability, these properties often render them the materials of choice. The Journal of Electroceramics is dedicated to providing a forum of discussion cutting across issues in electrical, optical, and magnetic ceramics. Driven by the need for miniaturization, cost, and enhanced functionality, the field of electroceramics is growing rapidly in many new directions. The Journal encourages discussions of resultant trends concerning silicon-electroceramic integration, nanotechnology, ceramic-polymer composites, grain boundary and defect engineering, etc.