Multilayer Structured Poly(vinylidene fluoride)-Based Composite Film with Ultrahigh Breakdown Strength and Discharged Energy Density.

Poly(vinylidene fluoride)-based (PVDF) composites with high discharged energy density () have been considered as advanced dielectric materials for pulsed power systems and electrical weapon systems. However, further improvement of the of PVDF-based composites with higher breakdown strength () is of utmost importance. Based on the principle of voltage distribution in the multilayer structure, the multilayer structure (five-layer structure) ceramic/polymer composite films consisting of pristine PVDF layers with high breakdown strength and PVDF layers doped with one-dimensional 0.

Excellent Energy-Storage Properties Achieved in BaTiO-Based Lead-Free Relaxor Ferroelectric Ceramics via Domain Engineering on the Nanoscale.

Barium titanate-based energy-storage dielectric ceramics have attracted great attention due to their environmental friendliness and outstanding ferroelectric properties. Here, we demonstrate that a recoverable energy density of 2.51 J cm and a giant energy efficiency of 86.