Ultra-high energy storage in lead-free NaNbO3-based relaxor ceramics with directional slush-like polar structures design

被引：4

作者：

Wang, Zhentao ^{[1
,2
]}

Li, Da ^{[1
,2
]}

Liu, Wenyuan ^{[3
]}

He, Liqiang ^{[4
]}

Xu, Diming ^{[1
,2
]}

Liu, Jinnan ^{[1
,2
]}

Ren, Jiajia ^{[1
,2
]}

Wang, Xin ^{[1
,2
]}

Liu, Yang ^{[1
,2
]}

He, Guoqiang ^{[1
,2
]}

Bao, Jian ^{[1
,2
]}

Fang, Zhen ^{[1
,2
]}

Yan, Guiwei ^{[1
,2
]}

Liang, Xu ^{[3
]}

Zhou, Tao ^{[5
]}

Zhao, Weichen ^{[1
,2
]}

Liu, Wenfeng ^{[6
]}

Wang, Dong ^{[4
]}

Zhou, Di ^{[1
,2
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Elect Sci & Engn, Key Lab Minist Educ, Multifunct Mat & Struct, Xian, Peoples R China

[2] Xi An Jiao Tong Univ, Int Ctr Dielect Res, Sch Elect Sci & Engn, Xian, Peoples R China

[3] Xi An Jiao Tong Univ, Sch Aerosp Engn, State Key Lab Strength & Vibrat Mech Struct, Xian, Peoples R China

[4] Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, State Key Lab Mech Behav Mat, Xian, Peoples R China

[5] Hangzhou Dianzi Univ, Sch Elect & Informat Engn, Hangzhou, Peoples R China

[6] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian, Peoples R China

来源：

NATURE COMMUNICATIONS | 2025年 / 16卷 / 01期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

CAPACITORS; DENSITY; PERFORMANCE; MULTILAYERS; FATIGUE;

D O I：

10.1038/s41467-025-58268-6

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Multilayer ceramic capacitors with ultra-high-power densities are widely used in electronic power systems. However, achieving a balance between high energy density and efficiency remains a substantial challenge that limits the practical application of advanced technologies. Here, guided by a phase-field simulation method, we propose a directional slush-like polar structure design with nanodomains embedded in polar orthorhombic matrix in NaNbO3-based lead-free multilayer ceramic capacitors. This strategy can effectively reduce the hysteresis loss by lowering domain size and improve the breakdown electric field by grain refining, which leads to a high energy storage density of 14.1 J square cm(-3) and an ultrahigh energy storage efficiency of 96.8% in multilayer ceramic capacitors. The proposed strategy can be utilized to design high-performance energy storage dielectrics and other related functionalities.

引用

页数：9

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