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

IF 15.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Nature Communications Pub Date : 2025-03-25 DOI:10.1038/s41467-025-58268-6

Zhentao Wang, Da Li, Wenyuan Liu, Liqiang He, Diming Xu, Jinnan Liu, Jiajia Ren, Xin Wang, Yang Liu, Guoqiang He, Jian Bao, Zhen Fang, Guiwei Yan, Xu Liang, Tao Zhou, Weichen Zhao, Wenfeng Liu, Dong Wang, Di Zhou

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Abstract

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▪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.

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具有定向泥状极性结构设计的无铅nanbo3基弛豫陶瓷的超高能量存储

具有超高功率密度的多层陶瓷电容器广泛应用于电子电力系统中。然而，实现高能量密度和效率之间的平衡仍然是一个重大挑战，限制了先进技术的实际应用。在相场模拟方法的指导下，我们提出了一种定向泥状极性结构设计，将纳米畴嵌入到nanbo3基无铅多层陶瓷电容器的极性正交矩阵中。该策略可通过减小畴尺寸有效降低磁滞损耗，并通过晶粒细化提高击穿电场，使多层陶瓷电容器的储能密度达到14.1 J▪cm−3，储能效率达到96.8%。所提出的策略可用于设计高性能储能电介质和其他相关功能。

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来源期刊

Nature Communications Biological Science Disciplines-

CiteScore

24.90

自引率

2.40%

发文量

6928

审稿时长

3.7 months

期刊介绍： Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.