Tuning Ferroelectric Response of Electroactive Materials by Controlling Multilayered Structures to Achieve Excellent Energy Storage Performance

Abstract

Inexpensive, high discharge energy storage dielectric capacitors based on polymers and polymer nanocomposites show great prospects in modern electrical power systems, such as electrified aircraft, renewable energy, and electromagnetic repulsion systems. [1][2][3][4][5] However, their relatively low discharge energy density compared to that of electrochemical capacitors and batteries limits their applications. [6][7][8][9] For instance, the most popular polymer for film capacitors is biaxially oriented polypropylene (BOPP). The easy preparation methods, the developed preparation technology, and the low cost of BOPP beat other polymers in some practical applications requiring relatively low energy density. BOPP only possesses a low energy density of %2-3 J cm À3 at a high applying electric field of 6000 kV cm À1 . [10][11][12] With the miniaturization of electrical systems becoming more and more important, the application of BOPP will be limited. There is an urgent need to store huge energy in capacitors of super small sizes. Hence, preparation strategies and methods to enhance the energy storage performance of polymer dielectric capacitors have been extensively studied.A dielectric capacitor consists of a pair of electrodes and an inner dielectric material as storage media, which become polarized and depolarized under the application and removal of an external electric field, respectively. Its discharge energy density (U e ) can be calculated using the formula U e ¼ ∫ D max 0

Crosslinking modification and hydrogen bonding synergy to achieve high breakdown strength and energy density of PMMA-co-GMA/PVDF dielectric composite films

“…11(c) compares the energy storage properties of the PEA/ MG-30%PVDF films with a number of PMMA-based composites reported in the literature. [48][49][50][51][52][53][54][55][56][57][58][59][60][61][62] The most significant merit of this work is that the discharged energy density and breakdown strength are much higher than that of linear PMMAbased composites since the PEA/MG-30%PVDF film can achieve a lower dielectric loss with a relatively high efficiency.…”

Ultrahigh efficiency and enhanced discharge energy density at low loading of nanofiller in trilayered polyvinylidene fluoride‐Ba0.8Sr0.2TiO3 nanocomposites

“…[10][11][12][13][14] Plethora of research investigations have been done to synthesize polymer ceramic nanocomposites with high discharge energy density (U D ) and high breakdown strength (BDS). [15][16][17] But, the polymerceramic nanocomposites having high efficiency (η) and discharge energy density are pertinently important for efficient pulsed power applications. Usually, high discharge energy densities have been achieved in polymer ceramic nanocomposites at higher vol% loading of ceramic nanofillers.…”

“… 10–14 . Plethora of research investigations have been done to synthesize polymer ceramic nanocomposites with high discharge energy density (U D ) and high breakdown strength (BDS) 15–17 . But, the polymer–ceramic nanocomposites having high efficiency ( η ) and discharge energy density are pertinently important for efficient pulsed power applications.…”