Enhanced breakdown strength via a codoping strategy and tape-casting technique: An approach for excellent energy storage performance in lead-free AgNbO3-based antiferroelectrics

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-01-14 DOI:10.1016/j.jeurceramsoc.2025.117218

Bingqing Yang , Wei Xu , Yu Zhang , Zedong Xu , Shizhe Wu , Xiao Wu , Chunlin Zhao , Tengfei Lin , Min Gao , Cong Lin

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引用次数: 0

Abstract

Lead-free AgNbO₃-based antiferroelectric (AFE) ceramics have attracted increasing interest owing to their environmentally friendly nature and excellent potential in energy storage devices. However, the poor breakdown strength (BDS) of AgNbO₃ limits its practical application. Herein, the Mn/Sm-codoing strategy and the tape-casting technique were utilized to improve the BDS of AgNbO₃-based ceramics to 320 kV cm⁻¹, which is almost 1.8 and 1.6 times greater than that of doped AgNbO₃ prepared by solid-state reaction and that of pure AgNbO₃ prepared by the tape-casting method, respectively. The relatively high BDS is attributed to the improved density, the grain size reduction and the decrease of concentration of oxygen vacancies. As a result, a high energy storage density of 5.18 J cm⁻³ with an efficiency of 73.3 % were observed. Our research enriches the fabrication strategy of lead-free AFE ceramics with high BDS and contributes to the applications of AFE-based energy storage devices.

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.