Near-Zero Energy Consumption Capacitors by Controlling Inhomogeneous Polarization Configuration.
basic_science · Level V
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- Record sourced from PubMed, PMID 38330176.
- Also identified by DOI 10.1002/adma.202313285.
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Abstract
Taking into account the need for energy conservation, achieving near-zero energy loss, namely ultrahigh efficiency (η), in energy storage capacitors with large recoverable energy storage density (W<sub>rec</sub>) plays an important role in applications, which is one of the major challenges in dielectric energy storage field. Here, guided by phase-field simulation, inhomogeneous polarization configuration with multiple symmetries and polarization magnitudes is controlled through aliovalent strongly polar double ion design to establish a strongly disordered state. A record-high η of ≈97.4% is realized in lead-free relaxors with a large W<sub>rec</sub> of ≈8.6 J cm<sup>-3</sup>, which also give a giant W<sub>rec</sub> of ≈11.6 J cm<sup>-3</sup> with an ultrahigh η of ≈96.1% through high-energy ball milling, showing a breakthrough progress in ceramic capacitors with a maximum figure of merit of 330. This work demonstrates that controlling inhomogeneous polarization configuration is an effective avenue to develop new high-performance near-zero energy loss energy storage capacitors.