Enhanced Energy Storage with Polar Vortices in Ferroelectric Nanocomposites
Physical Review Applied2017Vol. 8(3)
Citations Over TimeTop 18% of 2017 papers
Abstract
Understanding the influence of microstructure on energy-storage performance in ferroelectric nanocomposites is key to improving the energy density and efficiency of powerful dielectric capacitors. The authors demonstrate that topological vortices in ferroelectric-polymer nanowire composites can yield small remnant polarization and a narrow hysteresis loop, due to the vortex-to-polarization transformation. Phase-field simulations show that this approach of exploiting vortices leads to a large enhancement of energy density and efficiency, even at relatively low electric fields.
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