2024
DOI: 10.1002/ange.202416291
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Unleashed Remarkable Energy Storage Performance in Bi0.5K0.5TiO3‐based Relaxor Ferroelectrics by Local Structural Fluctuation

Weiwei Cao,
Tianyu Li,
Kai Li
et al.

Abstract: Dielectric capacitors harvest energy through an electrostatic process, which enables an ultrafast charging‐discharging rate and ultrahigh power density. However, achieving high energy density (Wrec) and efficiency (η) simultaneously, especially when preserving them across a wide frequency/temperature range or cycling numbers, remains challenging. In this work, by especially introducing NaTaO3 into the representative ferroelectric relaxor of Bi0.5K0.5TiO3‐Bi0.5Na0.5TiO3 and leveraging the mismatch between B‐sit… Show more

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