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Updated: Jan 7, 2026

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High-Entropy Superparaelectrics With both Ultrahigh Energy Storage Performance and Broad-High Temperature Stability.

Hao Li1,2, Lei Ning1,2, Li-Wen Zhang1,2,3

  • 1Inner Mongolia Key Laboratory of Advanced Ceramic Material and Devices, School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou, China.

Small (Weinheim an Der Bergstrasse, Germany)
|January 5, 2026
PubMed
Summary

High-entropy ceramics offer superior energy storage. A novel high-entropy-superparaelectric strategy in (Bi2Na0.2Ba0.2Sr0.2Ca0.2)TiO3-La(Mg0.5Zr0.5)O3 ceramics achieves high energy density and efficiency with excellent temperature stability.

Keywords:
energy storagehigh‐entropy ceramicssuperparaelectricstemperature stability

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Area of Science:

  • Materials Science
  • Ceramic Engineering
  • Energy Storage

Background:

  • Dielectric energy storage ceramics face challenges in achieving high energy density, efficiency, and temperature stability simultaneously.
  • Developing advanced dielectric materials is crucial for next-generation energy storage applications.

Purpose of the Study:

  • To propose a high-entropy-superparaelectric (HE-SPE) synergistic strategy for enhanced dielectric energy storage.
  • To investigate the impact of La(Mg0.5Zr0.5)O3 (LMZ) on (Bi0.2Na0.2Ba0.2Sr0.2Ca0.2)TiO3 (BNBSCT) ceramics for energy storage applications.

Main Methods:

  • A compositional design approach was employed, modifying the BNBSCT system with varying concentrations of LMZ.
  • High-entropy effects were induced by promoting cationic disorder to enhance breakdown field and polarization response.
  • Superparaelectric properties were tuned to achieve a broad operating temperature range.

Main Results:

  • The (1 - x)BNBSCT-xLMZ ceramics, particularly with x = 0.15, exhibited a high recoverable energy density (Wrec) of 13.51 J cm⁻³ and an energy storage efficiency (η) of 94.6%.
  • A high breakdown field (Eb) of 750 kV cm⁻¹ was achieved due to enhanced resistivity and potential uniformity.
  • Excellent energy storage performance was maintained across a wide temperature range (25–200°C).

Conclusions:

  • The HE-SPE strategy effectively enhances energy storage performance and temperature stability in dielectric ceramics.
  • This research offers a promising pathway for developing advanced dielectric materials for high-performance energy storage devices.