Improved breakdown strength of Poly(vinylidene Fluoride)-based composites by using all ball-milled hexagonal boron nitride sheets without centrifugation

Hexagonal boron nitride (h-BN) is an ideal candidate to endow ferroelectric polymers with high energy density (Ue) due to its intrinsic high breakdown strength (Eb) of 800 kV/mm. Generally, it is believed that only boron nitride nanosheets (BNNSs) could remarkably improve Eb of composite. Nevertheless, low-yield and time-consuming preparation procedures of BNNSs greatly limits the application of h-BN. To overcome this challenge, in this study,...