Ultrahigh capacitive energy storage through dendritic nanopolar design

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-04-10 DOI:10.1126/science.adt2703

Yajing Liu, Yang Zhang, Jing Wang, Chao Yang, Hongguang Wang, Judith L. MacManus-Driscoll, Hao Yang, Peter A. van Aken, Weiwei Li, Ce-Wen Nan

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Abstract

Electrostatic dielectric capacitors with ultrahigh power densities are sought after for advanced electronic and electrical systems owing to their ultrafast charge-discharge capability. However, low energy density resulting from low breakdown strength and suppressed polarization still remains a daunting challenge for practical applications. We propose a microstructural strategy with dendritic nanopolar (DNP) regions self-assembled into an insulator, which simultaneously enhances breakdown strength and high-field polarizability and minimizes energy loss and thus markedly improves energy storage performance and stability. For illustration, in this study, we achieved a high energy density of 215.8 joules per cubic centimeter with an efficiency of 80.7% at a high electric field of 7.4 megavolts per centimeter in a DNP structure–designed PbZr_0.53Ti_0.47O₃-MgO film. The proposed strategy is generally applicable for development of high-performance dielectric microcapacitors.

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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