通过结构设计与工艺优化提升无铅Na0.5Bi0.5TiO3基弛豫铁电陶瓷的介电储能性能

林鹏飞; 王浩宇; 祁萌; 于坤

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Enhanced dielectric energy storage performance in Pb-free Na0.5Bi0.5TiO3 based relaxor ferroelectric ceramics through both structural design and process optimization

首发时间：2026-05-14

Pengfei Lin ¹
Lin Pengfei (2004-), Male, Undergraduate Student, School of Materials and Energy, Southwest University. Main research interests: dielectric energy storage ceramics, ferroelectric materials.
Haoyu Wang Meng Qi Kun Yu
Yu Kun, Associate Professor, School of Materials and Energy, Southwest University. Main research interests: dielectric energy storage ceramics, ferroelectric and piezoelectric materials.

1、School of Materials and Energy, Southwest University, Chongqing 400715

Abstract：The simultaneous improvement of recoverable density (Wrec) and efficiency (η) are currently major focuses and challenges in dielectric ceramic capacitor research. This study constructs 0-3 type composites using non-ferroelectric additive AlN doped 0.585Bi0.5Na0.5TiO3-0.35Sr0.7Bi0.2TiO3-0.065Sr(Ga0.5Nb0.5)O3 (BSS) ceramics, which enhances the breakdown strength (Eb) and refines the P-E loop. Ultimately, when the doping amount reaches 4%, the Wrec of 2.84 J/cm3 and η of 81% were achieved. A viscous polymer process was conducted for improvement of the density, further enhancing the Eb. Through structural design and process optimization, the BSS-4AlNVPP ceramics achieved a Wrec of 6.24 J/cm3 and η of 89%. Its high dynamic polar nanoregions was confirmed by Piezoelectric microscopy. The effects of grain size and the additive AlN on Eb were studied via both phase field simulation and experimental research. The ceramic is a viable option for practical applications because of its exceptional energy storage preformance and temperature stability.

keywords： NBT-based ceramics Relaxor ferroelectric Energy storage 0-3 type composites

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通过结构设计与工艺优化提升无铅Na0.5Bi0.5TiO3基弛豫铁电陶瓷的介电储能性能

林鹏飞 ¹
Lin Pengfei (2004-), Male, Undergraduate Student, School of Materials and Energy, Southwest University. Main research interests: dielectric energy storage ceramics, ferroelectric materials.
王浩宇 ¹ 祁萌 ¹ 于坤 ¹
Yu Kun, Associate Professor, School of Materials and Energy, Southwest University. Main research interests: dielectric energy storage ceramics, ferroelectric and piezoelectric materials.

1、西南大学材料与能源学院，重庆 400715

摘要：同时提升可释放储能密度（Wrec）与储能效率（η），是当前介电陶瓷电容器研究的重点与难点。本研究采用非铁电添加剂氮化铝（AlN）掺杂 0.585-0.35-0.065（BSS）陶瓷，构建 0-3 型复相陶瓷，有效提高击穿场强（Eb）并优化极化 - 电场（P−E）电滞回线。当 AlN 掺杂量为 4% 时，材料实现 Wrec=2.84 J/cm3、η=81% 的储能性能。进一步采用黏弹性聚合物工艺提升陶瓷致密度，从而进一步增强击穿场强。经结构设计与工艺优化协同作用，BSS-4AlNVPP 陶瓷最终获得 Wrec=6.24 J/cm3、η=89% 的优异性能。压电显微镜测试证实材料中存在大量动态极性纳米微区。结合相场模拟与实验研究，系统分析了晶粒尺寸及 AlN 添加剂对击穿场强的作用机制。该陶瓷具备优异的脉冲放电性能与突出的温度稳定性，在实际应用中具有良好应用前景。

关键词：铌酸铋钠基陶瓷; 弛豫铁电体; 储能; 0-3 型复合材料

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1. The authors thanks to the sponsorship of the Zeng Sumin Scientific Research Program （zsm202322）

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Pengfei Lin,Haoyu Wang,Meng Qi,et al. Enhanced dielectric energy storage performance in Pb-free Na0.5Bi0.5TiO3 based relaxor ferroelectric ceramics through both structural design and process optimization[EB/OL]. Beijing:Sciencepaper Online[2026-05-14]. https://www.paper.edu.cn/releasepaper/content/202605-47.

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论文编号	202605-47
论文题目	通过结构设计与工艺优化提升无铅Na0.5Bi0.5TiO3基弛豫铁电陶瓷的介电储能性能
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