High energy storage density and power density achieved simultaneously in NaNbO3-based lead-free ceramics via antiferroelectricity enhancement

By Xiaoyan Dong, X. Li, Xiuli Chen, Hongyun Chen, Congcong Sun, Junpeng Shi, F. Pang, Huanfu Zhou. 2020

137 citations recorded by the source corpus.

Abstract High-performance lead-free dielectric ceramics with simultaneously high energy storage density and power density are in high demanded for pulse power systems. To realize excellent energy-storage characteristics, a strategy to enhance antiferroelectricity and construct a local random field simultaneously was proposed in this study. Based on the above strategy, a series of (1-x)NaNbO3-xBi(Ni1/2Sn1/2)O3 [xBNS, x = 0.05, 0.10, 0.15, 0.20, and 0.22] solid solutions were designed and fabricated. An ultrahigh energy storage density (Utotal) of 7.35 J/cm3, and recoverable energy density (Urec) of 5.00 J/cm3 were achieved in the 0.10BNS ceramics. In addition, an adequate stability of energy storage properties at a range of temperatures (20–140 °C), frequencies (1–100 Hz), and fatigue test durations (1–104 cycles) were realized in 0.1BNS ceramics. 0.1BNS ceramics displayed a high current density of 1005 A/cm2, an ultrahigh power density of 100.5 MW/cm3, and an ultrashort discharge time of 46.5 ns. This remarkable performance not only justified our strategy but also confirmed 0.10BNS ceramics as a promising candidate for energy storage.

Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/88ad6b5ce615dc99cda4cdf8f7d7e88416c63333