An Energy-Harvesting Device Based on Mechano-Electrospun Aligned Poly(vinylidene fluoride) Fiber Arrays

Abstract

A nanogenerator is fabricated on the basis of in situ mechanical stretching and electrical poling of polyvinylidene fluoride fiber arrays deposited by mechano-electrospinning. The fibers with uniform polarization directions via loop motion control are directly written on flexible substrates with interdigitated comb electrodes. After encapsulation, the output voltage and current are enhanced compared with those in the postpoling treatment of near-field electrospinning fibers. The fabrication process reported here can be used to fabricate various energy-harvesting devices or actuators in the future.