Intermolecular interactions and high dielectric energy storage density in poly(vinylidene fluoride-hexafluoropropylene)/poly(vinylidene fluoride) blend thin films

High–Energy‐Storage Density Capacitors of Bi(Ni1/2Ti1/2)O3–PbTiO3 Thin Films with Good Temperature Stability

“…The maximum energy density of J/cm 3 and a high‐energy efficiency of % under 2250 kV/cm were obtained. In particular, the obtained energy density in the BNT–PT films was greatly larger than that of the polymer and relaxor ferroelectric films so far, and is also higher than the reported value of antiferroelectric films with similar thickness . Thus, the BNT–PT films could be a promising candidate for high‐energy density capacitor applications.…”

“…It can be observed in the measurement range that the capacitance density gradually decreased from 1925 to 1638 nF/cm 2 . The values were much larger than those of polymer ferroelectric and antiferroelectric films, which can be attributed to the large dielectric constant of BNT–PT films. The temperature dependence of the dielectric constant and loss measured at 100 kHz was presented in the inset of Fig.…”

“…With the increasing consumer and industrial requirements for energy and the continued consumption of fossil fuels, the development of high–energy‐storage materials is becoming increasingly important. Dielectric materials possess extremely fast charging and discharging rates compared with Li‐ion batteries or fuel cells and play a key role in modern electronics and electric power systems . A major drawback, however, is that the low energy density (1–2 J/cm 3 ) in the current high power electronic markets which mainly utilize linear dielectric materials could not meet the increasingly urgent demand for high‐energy density capacitors.…”

“…A major drawback, however, is that the low energy density (1–2 J/cm 3 ) in the current high power electronic markets which mainly utilize linear dielectric materials could not meet the increasingly urgent demand for high‐energy density capacitors. In the past few years, polymer ferroelectrics, antiferroelectrics, and relaxor ferroelectrics have shown better potential and higher energy density compared with linear dielectrics . However, the relatively low dielectric constant in the polymer ferroelectrics and low‐temperature antiferroelectric–ferroelectric phase transition in the antiferroelectrics have limited their applications.…”

Click-In Ferroelectric Nanoparticles for Dielectric Energy Storage

“…The energy density of dielectric capacitors is approximately 3 orders of magnitude less than that of Li-ion technologies. Improving the energy density of dielectric capacitors has been of particular interest over the past 10 years focusing on high dielectric constant ceramics, [26][27][28][29][30][31][32][33][34][35][36][37][38][39] high breakdown polymers, [40][41][42][43][44][45][46][47][48][49][50][51] and composites of these materials. 24,32,[52][53][54][55][56][57][58][59][60][61] Research on dielectric capacitors aims to improve the two material properties that dictate the energy density of a device (i.e.…”