Dr Zhilun Lu Z.Lu@napier.ac.uk
Lecturer
Dr Zhilun Lu Z.Lu@napier.ac.uk
Lecturer
Dr Dongyang Sun D.Sun@napier.ac.uk
Lecturer
Ge Wang
Jianwei Zhao
Bin Zhang
Dawei Wang
Prof Islam Shyha I.Shyha@napier.ac.uk
Professor
It is crucial to discover lead-free materials with ultrahigh recoverable energy density (Wrec) that can be employed in future pulse power capacitors. In this work, a high Wrec of 4.51 J/cm3 was successfully obtained in lead-free Nd-doped AgNb0.8Ta0.2O3 antiferroelectric ceramics at an applied electric field of 290 kV/cm. It is discovered that Nd doping paired with Nb-site vacancies could stabilize the antiferroelectric phase by lowering the temperatures of the M1–M2 and M2–M3 phase transitions, which leads to higher energy storage efficiency. Furthermore, Nd and Ta co-doping will contribute to the electrical homogeneity and low electrical conductivity, resulting in large breakdown strengths. Aliovalent doping in Ag-site with Nb-site vacancies serves as a novel strategy for the construction of AgNbO3-based ceramics with excellent energy storage performance.
Lu, Z., Sun, D., Wang, G., Zhao, J., Zhang, B., Wang, D., & Shyha, I. (2023). Energy storage properties in Nd doped AgNbTaO3 lead-free antiferroelectric ceramics with Nb-site vacancies. Journal of Advanced Dielectrics, 13(01), Article 2242006. https://doi.org/10.1142/s2010135x22420061
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 28, 2022 |
Online Publication Date | Dec 3, 2022 |
Publication Date | 2023-02 |
Deposit Date | Nov 11, 2022 |
Publicly Available Date | Feb 15, 2023 |
Journal | Journal of Advanced Dielectrics |
Print ISSN | 2010-135X |
Electronic ISSN | 2010-1368 |
Publisher | World Scientific Publishing |
Peer Reviewed | Peer Reviewed |
Volume | 13 |
Issue | 01 |
Article Number | 2242006 |
DOI | https://doi.org/10.1142/s2010135x22420061 |
Keywords | AgNbO3-based ceramics, antiferroelectric, energy storage |
Public URL | http://researchrepository.napier.ac.uk/Output/2952747 |
Energy storage properties in Nd-doped AgNbTaO3 lead-free antiferroelectric ceramics with Nb-site vacancies
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