Strategies to Improve the Energy Storage Properties of Perovskite Lead-Free Relaxor Ferroelectrics: A Review

Abstract

Electrical energy storage systems (EESSs) with high energy density and power density are essential for the effective miniaturization of future electronic devices. Among different EESSs available in the market, dielectric capacitors relying on swift electronic and ionic polarization-based mechanisms to store and deliver energy already demonstrate high power densities. However, different intrinsic and extrinsic contributions to energy dissipations prevent ceramic-based dielectric capacitors from reaching high recoverable energy density levels. Interestingly, relaxor ferroelectric-based dielectric capacitors, because of their low remnant polarization, show relatively high energy density and thus display great potential for applications requiring high energy density properties. Here, some of the main strategies to improve the energy density properties of perovskite lead-free relaxor systems are reviewed. This includes (i) chemical modification at different crystallographic sites, (ii) chemical additives that do not target lattice sites and (iii) novel processing approaches dedicated to bulk ceramics, thick and thin films, respectively. Recent advancements are summarized concerning the search for relaxor materials with superior energy density properties and the appropriate choice of both composition and processing route to match various needs in the application. Finally, future trends in computationally-aided materials design are presented.

47 pages, 11 figures, 2 tables

References in corpus (4)

• Phase transitions, energy storage performances and electrocaloric effect of the lead-free Ba0.85Ca0.15Zr0.10Ti0.90O3 ceramic relaxor
• Dielectric and structural studies of ferroelectric phase evolution in dipole pair substituted barium titanate ceramics
• Raman spectra of fine-grained materials from first principles
• Atomic scale symmetry and polar nanoclusters in the paraelectric phase of ferroelectric materials

Cited by in corpus (6)

• Origin of relaxor behavior in barium-titanate based lead-free perovskites
• Tripling energy storage density through order-disorder transition induced polar nanoregions in PbZrO3 thin films by ion implantation
• Subcoercive-field dielectric response of $0.5({\text{Ba}}_{0.7}{\text{Ca}}_{0.3}{\text{TiO}}_3)-0.5({\text{BaZr}}_{0.2}{\text{Ti}}_{0.8}{\text{O}}_3)$ thin film: peculiar third harmonic signature of phase transitions and residual ferroelectricity
• Enhancement of piezoelectric properties in a narrow cerium doping range of ${\text{Ba}}_{1-x}{\text{Ca}}_x{\text{Ti}}_{1-y}{\text{Zr}}_y{\text{O}}_3$ evidenced by high throughput experiment
• Point defect design in (Ba,Sr)TiO${}_3$ -- an insight on agglomeration
• Ferroelectric switching at edge dislocations in BaTiO${}_3$ modelled at the atomic scale