Optimizing high-temperature energy storage in tungsten bronze-structured ceramics via high-entropy strategy and bandgap engineering

Yangfei Gao, Zizheng Song, Haichao Hu, Junwen Mei, Ruirui Kang, Xiaopei Zhu, Bian Yang, Jinyou Shao, Zibin Chen (), Fei Li, Shujun Zhang () and Xiaojie Lou ()
Additional contact information
Yangfei Gao: Xi’an Jiaotong University
Zizheng Song: The Hong Kong Polytechnic University
Haichao Hu: Xi’an Jiaotong University
Junwen Mei: Xi’an Jiaotong University
Ruirui Kang: Xi’an Jiaotong University
Xiaopei Zhu: Xi’an University of Technology
Bian Yang: Xi’an University of Technology
Jinyou Shao: Xi’an Jiaotong University
Zibin Chen: The Hong Kong Polytechnic University
Fei Li: Xi’an Jiaotong University
Shujun Zhang: University of Wollongong
Xiaojie Lou: Xi’an Jiaotong University

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract As a vital material utilized in energy storage capacitors, dielectric ceramics have widespread applications in high-power pulse devices. However, the development of dielectric ceramics with both high energy density and efficiency at high temperatures poses a significant challenge. In this study, we employ high-entropy strategy and band gap engineering to enhance the energy storage performance in tetragonal tungsten bronze-structured dielectric ceramics. The high-entropy strategy fosters cation disorder and disrupts long-range ordering, consequently regulating relaxation behavior. Simultaneously, the reduction in grain size, elevation of conductivity activation energy, and increase in band gap collectively bolster the breakdown electric strength. This cascade effect results in outstanding energy storage performance, ultimately achieving a recoverable energy density of 8.9 J cm−3 and an efficiency of 93% in Ba0.4Sr0.3Ca0.3Nb1.7Ta0.3O6 ceramics, which also exhibit superior temperature stability across a broad temperature range up to 180 °C and excellent cycling reliability up to 105. This research presents an effective method for designing tetragonal tungsten bronze dielectric ceramics with ultra-high comprehensive energy storage performance.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-50252-w 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:15:y:2024:i:1:d:10.1038_s41467-024-50252-w

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

DOI: 10.1038/s41467-024-50252-w

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 ().