High‐Entropy Design Toward Ultrahigh Energy Storage Density Under Moderate Electric Field in Bulk Lead‐Free Ceramics
Hanyu Zhao,
Wenjun Cao,
Cen Liang
et al.
Abstract:Electrostatic capacitors with ultrahigh energy‐storage density are crucial for the miniaturization of pulsed power devices. A long‐standing challenge is developing dielectric materials that achieve ultrahigh recoverable energy density Wrec ≥ 10 J cm−3 under moderate electric fields (30 ≤ E ≤ 50 kV mm−1). Herein, a specific high‐entropy strategy is proposed to modulate the phase structure and interfacial polarization of medium‐entropy base materials using linear dielectrics. This strategy ensures a sufficient p… Show more
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