Ultra-high energy storage in relaxor ferroelectric MLCCs at elevated temperatures via entropy modulated strain heterogeneity
Multilayer ceramic capacitors are pivotal components in pulse power systems due to their ultra-high power density. However, given the demanding service conditions in aerospace and oil drilling applications, the need to enhance high-temperature energy storage remains particularly urgent. In this work, we employ a strain modulation strategy by enhancing configuration entropy within bismuth sodium titanate-based ceramics. This approach enhances relaxor behavior, suppresses electron migration, and improves structural stability and breakdown strength at elevated temperatures. Notably, the resulting multilayer ceramic capacitors exhibit a substantial recoverable energy density of 19.0 J cm<sup>-3</sup> and an impressive efficiency of 90% under an electric field of 1320 kV cm<sup>-1</sup>. Furthermore, these capacitors sustain a high energy density above 11.0 J cm<sup>-3</sup> even at 200 °C. This extraordinary high-temperature energy storage performance surpasses those of recently reported multilayer ceramic capacitors. Our findings underscore the significant potential of strain modulation as a strategy for designing high-temperature energy storage materials.
Authors
- Xiaojie Lou (ORCID: https://orcid.org/0000-0002-0603-8451)
- Danyang Wang (ORCID: https://orcid.org/0000-0002-7883-8001)
- Jiantuo Zhao
- Ruirui Kang (ORCID: https://orcid.org/0000-0003-3934-2625)
- Zhengqian Fu (ORCID: https://orcid.org/0000-0001-9402-9549)
- Fei Li (ORCID: https://orcid.org/0000-0002-4572-0322)
- Yang Li (ORCID: https://orcid.org/0000-0002-2853-8916)
- Shujun J. Zhang (ORCID: https://orcid.org/0000-0001-6139-6887)
- Zepeng Wang (ORCID: https://orcid.org/0009-0003-7042-823X)
- Junbo Xu
- M. Bai (ORCID: https://orcid.org/0000-0002-6212-6341)
- Tengfei Hu (ORCID: https://orcid.org/0000-0002-5271-4967)
- Lixue Zhang (ORCID: https://orcid.org/0000-0001-6066-3066)
- Yangfei Gao
Institutions
- City University of Hong Kong (HK)
- University of Wollongong (AU)
- UNSW Sydney (AU)
- Division of Materials Science and Engineering (AU)
- Green Technology (US)
- Ministry of Education (TW)
- Shanghai Institute of Ceramics (CN)
- Xi'an Jiaotong University (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-10-13
- DOI
- https://doi.org/10.1038/s41467-025-64113-7
- Citations
- 8
- Primary Topic
- Ferroelectric and Piezoelectric Materials
- Type
- article
- Field-Weighted Citation Impact
- 4.14
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Fundamental Research Funds for the Central Universities
- Natural Science Basic Research Program of Shaanxi Province