Optimization strategies for energy storage properties ofpolyvinylidene fluoride composites br

Dielectric capacitors have been widely used in crucial energy storage systems of electronic power systemsbecause of their advantages such as fast charge discharge rates, long cycle lifetimes, low losses, and flexible andconvenient processingc. However, the dielectric capacitors have lower energy storage densities thanelectrochemical energy storage devices, which makes them difficult to meet higher application requirements forelectrical engineering at the present stage. Polyvinylidene fluoride (PVDF) based polymers show great potentialin achieving improved energy storage properties, which is attributed to their high dielectric constants and highbreakdown strengths. This work systematically reviews PVDF-based nanocomposites for energy storageapplications. Dielectric constant, breakdown strength and charge discharge efficiency are three main parametersrelated to energy storage properties, which are proposed to discuss their mechanisms of action and optimizationstrategies. Finally, the key scientific problems of PVDF-based high energy storage composites are summarizedand considered, and the future development trend of dielectric capacitors is also prospected