Research status of ferroelectric ceramic energy storage

Can ferroelectric ceramics be used in advanced energy storage devices?

In recent years, excellent recoverable energy storage density (Wrec) of 8.09 J/cm 3 has been obtained in (K 0·5 Na 0.5)NbO 3 (KNN)-based ferroelectric ceramics, which demonstrates their potential applications in the advanced energy storage devices fields .

What is a ferroelectric ceramic?

Typical ferroelectric ceramics (such as BaTiO3, Bi 0.5 Na 0.5 TiO 3, BiFeO 3, etc.) have high polarization and dielectric constant but suffer a low breakdown strength and a high remnant polarization, resulting in low energy storage density and efficiency.

Can ceramics achieve high energy density under low electric fields?

The development of ceramics with superior energy storage performance and transparency holds the potential to broaden their applications in various fields, including optoelectronics, energy storage devices, and transparent displays. However, designing a material that can achieve high energy density under low electric fields remains a challenge.

What is the energy storage performance of ceramics?

In this study, we fabricated 0.85K0.5Na0.5NbO3-0.15Sr0.7Nd0.2ZrO3 ceramics with an outstanding energy storage performance (Wrec ~ 7 J cm−3, η ~ 92% at 500 kV cm−1; Wrec ~ 14 J cm−3, η ~ 89% at 760 kV cm−1).

How to achieve superior energy storage performance in advanced dielectric ceramics?

Hence, to attain superior energy storage performance in advanced dielectric ceramics, relaxor design has emerged as the most promising approach 15 – 17.

Can high entropy relaxor ferroelectric materials be used for energy storage?

This study provides evidence that developing high-entropy relaxor ferroelectric material via equimolar-ratio element design is an effective strategy for achieving ultrahigh energy storage characteristics. Our results also uncover the immense potential of tetragonal tungsten bronze-type materials for advanced energy storage applications.