Nanofiller-Enhanced Polar Beta (β)-Phase formation in PVDF Composites: A Mini Review of System for Application in Energy Harvesting

Renewable, Convenient, and Sustainable energy has emerged as the developmental trend for electronic devices and portable electronics, which are prevalent in our daily life. Most electronic devices must exhibit lightweight characteristics, strong conductivity, elevated dielectric permittivity, minimal dielectric loss, and substantial breakdown strength. Consequently, polymer-based piezoelectric materials are in high demand for the design and development of energy storage and sensing applications. Among the piezoelectric polymer, poly (vinylidene fluoride) (PVDF) with a mainly polar β-Phase is the most remarkable. However, the main drawbacks of the PVDF matrix are its relatively low electrical conductivity and poor harvesting and low sensing performances. In this study, the incorporation of nanoparticles in the PVDF matrix has synergistic increases electro-active β- phase due to of their unique properties. Here we have reviewed the formation process of the polar β-Phase in PVDF matrix and PVDF piezoelectric properties related to energy harvesting and sensing application.