Ultra-high energy storage in lead-free NaNbO3-based relaxor ceramics with directional slush-like polar structures design
Multilayer ceramic capacitors with ultra-high-power densities are widely used in electronic power systems. However, achieving a balance between high energy density and efficiency remains a substantial challenge that limits the practical application of advanced technologies. Here, guided by a phase-field simulation method, we propose a directional slush-like polar structure design with nanodomains embedded in polar orthorhombic matrix in NaNbO<sub>3</sub>-based lead-free multilayer ceramic capacitors. This strategy can effectively reduce the hysteresis loss by lowering domain size and improve the breakdown electric field by grain refining, which leads to a high energy storage density of 14.1 J▪cm<sup>-3</sup> and an ultrahigh energy storage efficiency of 96.8% in multilayer ceramic capacitors. The proposed strategy can be utilized to design high-performance energy storage dielectrics and other related functionalities.
Authors
- Liqiang He (ORCID: https://orcid.org/0009-0006-4407-621X)
- Xin Wang (ORCID: https://orcid.org/0000-0002-5532-7516)
- Zhen Fang (ORCID: https://orcid.org/0009-0007-3293-9468)
- Jinnan Liu (ORCID: https://orcid.org/0000-0001-9108-1990)
- Jiajia Ren (ORCID: https://orcid.org/0000-0002-6416-9804)
- Guiwei Yan (ORCID: https://orcid.org/0000-0001-9617-7473)
- Weichen Zhao (ORCID: https://orcid.org/0009-0002-8538-0032)
- Diming Xu
- Di Zhou (ORCID: https://orcid.org/0000-0001-7411-4658)
- Jian Bao (ORCID: https://orcid.org/0000-0003-1840-986X)
- Tao Zhou (ORCID: https://orcid.org/0000-0001-8558-7610)
- Yang Liu (ORCID: https://orcid.org/0000-0001-5752-5180)
- Da Li (ORCID: https://orcid.org/0009-0004-3566-9174)
- Dong Wang (ORCID: https://orcid.org/0000-0001-6009-166X)
- Wenyuan Liu (ORCID: https://orcid.org/0000-0002-2536-9416)
- Liang Xu (ORCID: https://orcid.org/0000-0003-4319-2148)
- Wenfeng Liu (ORCID: https://orcid.org/0000-0003-4726-7020)
- Zhentao Wang (ORCID: https://orcid.org/0000-0003-0402-1864)
- Guoqiang He
Institutions
- Ministry of Education (TW)
- Hangzhou Dianzi University (CN)
- Xi'an Jiaotong University (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-03-25
- DOI
- https://doi.org/10.1038/s41467-025-58268-6
- Citations
- 30
- Primary Topic
- Ferroelectric and Piezoelectric Materials
- Type
- article
- Field-Weighted Citation Impact
- 15.53