Preparation and optimization of Polyvinylidene fluoride (PVDF) triboelectric nanogenerator via electrospinning

Abstract

With more and more wearable electronics entering the market, the bottleneck of batteries attracts considerable attentions because of its limited lifetime and energy storage capacity. To solve this problem, triboelectric nanogenerators (TENG) have recently been researched to be applied on harvesting mechanical energy from ambient environment, which is of great significance in the field of energy conversion. In this paper, Electrospinning is introduced to prepare all-fiber mats for its significant advantages such as simple, low-cost and versatile. A range of polymer electrospun mats are assembled as the positive triboelectric materials with the electronegative material, Polyvinylidene fluoride (PVDF), to fabricate TENGs. Furthermore the energy transform of TENG is optimized when adjusting the experiment parameters systematically, such as the mats thickness, nanofibers morphology, high-aligned mats friction angle of mat-based TENG and environmental humidity. It is a significant progress to research the influence factors of TENG for fabricating self-powered device via electrospinning.