Superior energy storage capacity of polymer-based bilayer composites by introducing 2D ferroelectric micro-sheets

Zhenhao Fan, Jian Dai, Yuyan Huang, Hang Xie, Yitao Jiao, Wenfeng Yue, Fu Huang, Yuqun Deng, Dawei Wang (), Qingfeng Zhang () and Yunfei Chang ()
Additional contact information
Zhenhao Fan: Harbin Institute of Technology
Jian Dai: Harbin Institute of Technology
Yuyan Huang: Hubei University
Hang Xie: Harbin Institute of Technology
Yitao Jiao: University of Macau Avenida da Universidade
Wenfeng Yue: Harbin Institute of Technology
Fu Huang: Harbin Institute of Technology
Yuqun Deng: Harbin Institute of Technology
Dawei Wang: Harbin Institute of Technology
Qingfeng Zhang: Hubei University
Yunfei Chang: Harbin Institute of Technology

Nature Communications, 2025, vol. 16, issue 1, 1-10

Abstract: Abstract Dielectric polymer capacitors suffer from low discharged energy density and efficiency due to their low breakdown strength, small dielectric constant and large electric hysteresis. Herein, a synergistic enhancement strategy is proposed to significantly increase both breakdown strength and dielectric constant while suppressing hysteresis, through introducing 2-dimensional bismuth layer-structured Na0.5Bi4.5Ti4O15 micro-sheets and designing a unique bilayer structure. Excitingly, an ultra-high discharged energy density of 25.0 J cm−3 and a large efficiency of 81.2% are achieved in Na0.5Bi4.5Ti4O15-poly(vinylidene fluoride-co-hexafluoropropylene)/Na0.5Bi4.5Ti4O15-polyetherimide bilayer composites under a dramatically enhanced breakdown strength of 8283 kV cm−1. Finite element simulations along with experimental test results demonstrate that greatly improved breakdown strength is ascribed to uniform and horizontal alignments of Na0.5Bi4.5Ti4O15 sheets (~1–2 μm) in the matrix and interface effect of adjacent layers with large dielectric differences, which effectively inhibit electrical tree evolution and conduction loss. This work provides a strong foundation for developing high-performance polymer-based energy storage devices.

Date: 2025
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-55112-1 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-024-55112-1

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-55112-1

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().