Defect-engineered core-shell structured NaNbO3-based energy storage ceramics

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics Pub Date : 2025-06-13 DOI:10.1016/j.jmat.2025.101097

Qinpeng Dong, Yu Zhang, Yue Pan, Jiangping Huang, Xiuli Chen, Xu Li, Huanfu Zhou

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Abstract

As research on lead−free energy storage materials advances, high−performance substrates and their modification methods have been continuously explored. In NaNbO₃–based energy storage ceramics, low polarization limits the enhancement of energy storage performance. This study utilized defect engineering design to prepare (1–x)NaNbO₃-xSr(Fe_1/3Sb_2/3)O₃ ceramics with core–shell structure through a Fe/Sb dual oxidation state variable element synergistic regulation strategy. The goal is to enhance ΔP and optimize E_b of ceramics by adjusting the content of vacancy defects and phase structure, so that ceramics can achieving high energy storage characteristics. A W_rec of 6.4 J/cm³ and η of 80% at 645 kV/cm were achieved in NaNbO₃–based ceramic. Additionally, based on this study, we performed a detailed analysis of the origin of high ΔP and the influence of defect structures on E_b, with the aim of providing a new reference for development and research of high–performance lead–free energy storage ceramics.

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缺陷工程核壳结构nanbo3储能陶瓷

随着无铅储能材料研究的深入，高性能衬底及其改性方法不断得到探索。在基于nanbo3的储能陶瓷中，低极化限制了储能性能的提高。本研究利用缺陷工程设计，通过Fe/Sb双氧化态变元协同调控策略制备了具有核壳结构的（1-x）NaNbO3-xSr(Fe1/3Sb2/3)O3陶瓷。目标是通过调整空位缺陷的含量和相结构来增强ΔP和优化陶瓷的Eb，使陶瓷达到高储能特性。在645 kV/cm下，纳米bo3基陶瓷的Wrec为6.4 J/cm3， η为80%。此外，在本研究的基础上，我们详细分析了高ΔP的来源以及缺陷结构对Eb的影响，旨在为高性能无铅储能陶瓷的开发和研究提供新的参考。

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来源期刊

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.