Answers are grounded in this paper and cite their sources.
It is crucial to discover lead-free materials with ultrahigh recoverable energy density ([Formula: see text][Formula: see text]) that can be employed in future pulse power capacitors. In this work, a high [Formula: see text][Formula: see text]of 4.51 J/cm3 was successfully obtained in lead-free Nd-doped AgNb[Formula: see text]Ta[Formula: see text]O3 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.
No takes yet. Share an insight, caveat, or question.
Lu et al. (2022) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: