Inner Mongolia Key Lab of Nanoscience and Nanotechnology, and School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China
Abstract：We report a distinctive way for designing lead-free films with high energy storage performance. By inserting different single perovskite cells into Bi$_{4}$Ti$_{3}$O$_{12}$, $P$–$E$ hysteresis loops present larger maximum polarization, higher breakdown strength and smaller slim-shaped area. We prepared 0.15Bi$_{7}$Fe$_{3}$Ti$_{3}$O$_{21}$-0.5Bi$_{4}$Sr$_{3}$Ti$_{6}$O$_{21}$-0.35Bi$_{4}$Ba$_{3}$Ti$_{6}$O$_{21}$ solid solution ferroelectric films employing the sol-gel method, and obtained high energy storage density of 132.5 J/cm$^{3}$ and efficiency of 78.6% while maintaining large maximum polarization of 112.3 μC/cm$^{2}$ and a high breakdown electric field of 3700 kV/cm. Moreover, the energy storage density and efficiency exhibit stability over the temperature range from 20 ℃ to 125 ℃, and anti-fatigue stability maintains up to 10$^{8}$ cycles. The films with a simple preparation method and high energy storage performance are likely to become candidates for high-performance energy storage materials.
. [J]. 中国物理快报, 2020, 37(11): 118401-.
Qiong Wu , Xin Wu , Yue-Shun Zhao , and Shifeng Zhao. Design of Lead-Free Films with High Energy Storage Performance via Inserting a Single Perovskite into Bi$_{4}$Ti$_{3}$O$_{12}$. Chin. Phys. Lett., 2020, 37(11): 118401-.
2020, Vol. 37 
