Structure-evolution-designed amorphous oxides for dielectric energy storage

Yahui Yu, Qing Zhang, Zhiyu Xu, Weijie Zheng, Jibo Xu, Zhongnan Xi, Lin Zhu, Chunyan Ding, Yanqiang Cao, Chunyan Zheng, Yalin Qin, Shandong Li, Aidong Li, Di Wu, Karin M. Rabe, Xiaohui Liu () and Zheng Wen ()
Additional contact information
Yahui Yu: Qingdao University
Qing Zhang: Shandong University
Zhiyu Xu: Qingdao University
Weijie Zheng: Qingdao University
Jibo Xu: Qingdao University
Zhongnan Xi: Nanjing University
Lin Zhu: Nanjing University
Chunyan Ding: Qingdao University
Yanqiang Cao: Nanjing University of Science and Technology
Chunyan Zheng: Qingdao University
Yalin Qin: Qingdao University
Shandong Li: Qingdao University
Aidong Li: Nanjing University
Di Wu: Nanjing University
Karin M. Rabe: Rutgers University
Xiaohui Liu: Shandong University
Zheng Wen: Qingdao University

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Recently, rapidly increased demands of integration and miniaturization continuously challenge energy densities of dielectric capacitors. New materials with high recoverable energy storage densities become highly desirable. Here, by structure evolution between fluorite HfO2 and perovskite hafnate, we create an amorphous hafnium-based oxide that exhibits the energy density of ~155 J/cm3 with an efficiency of 87%, which is state-of-the-art in emergingly capacitive energy-storage materials. The amorphous structure is owing to oxygen instability in between the two energetically-favorable crystalline forms, in which not only the long-range periodicities of fluorite and perovskite are collapsed but also more than one symmetry, i.e., the monoclinic and orthorhombic, coexist in short range, giving rise to a strong structure disordering. As a result, the carrier avalanche is impeded and an ultrahigh breakdown strength up to 12 MV/cm is achieved, which, accompanying with a large permittivity, remarkably enhances the energy storage density. Our study provides a new and widely applicable platform for designing high-performance dielectric energy storage with the strategy exploring the boundary among different categories of materials.

Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-023-38847-1 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:14:y:2023:i:1:d:10.1038_s41467-023-38847-1

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

DOI: 10.1038/s41467-023-38847-1

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 ().