Work

Enhanced Energy Storage Properties of the Relaxor and Antiferroelectric Crossover Ceramic Enabled by a High Entropy Design

Year: 2025

Type: article

Abstract: In this work, we introduce a high entropy effect in designing a relaxor ferroelectric (RFE)–antiferroelectric (AFE) crossover ceramic by incorporating a high entropy relaxor-like oxide (Pb0.25Ba0.25Sr0.25Ca0.25)TiO3 with antiferroelectric NaNbO3. The results show that the relaxor ferroelectricity of the system is enhanced with increasing NaNbO3, and when the new composition reaches the highest configurational entropy, stable energy storage properties can be achieved. This is enabled by a high breakdown strength due to the small grain size and stable slim ferroelectric hysteresis loop with high efficiency due to entropy-stabilized short-range ordered polar nanoregions (PNRs). These findings showcase the potential of this strategy for exploiting new compositions of high-performance electrostatic capacitors.

Source: Materials

DOI: 10.3390/ma18091937

Authors: Yinghao Li, Wei Xiong, Xuefan Zhou, Hang Luo, Ru Guo, Dou Zhang

Institutions: Central South University, State Key Laboratory of Powder Metallurgy, Chinese University of Hong Kong

Language: English

Topic: Ferroelectric and Piezoelectric Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $3,137