摘要
Triboelectric nanogenerators(TENGs)are highly promising energy-harvesting devices that exhibit considerable potential for use in self-powered wearable electronics.Nano/microfillers and surface microstructure modification have been proposed to improve the triboelectric performance of TENGs.In this work,performance-enhanced flexible polydimethylsiloxane(PDMS)was developed through bi-material(reduced graphene oxide/fluorinated ethylene propylene,rGO/FEP)modification and filtrationmembrane-patterned surface microstructure.The rGO/FEP with high charge-inducing and-trapping capabilities can be used as the dielectric-enhanced filler for improving triboelectricity.Ordered micro-dents of 5–50μm are created on the modified PDMS surface with an increased contact area of TENG.Compared with the pure PDMS,the modified PDMS film-based TENG could deliver a substantial enhancement in power density(0.87 mW cm^(-2))by 28 times.Further,the versatility of this device is demonstrated in human activity monitoring and capacitor charging.This work provided a simple,high-tunability,and scalable approach for improving the output performance of TENGs for biomechanical energy-harvesting devices that can be integrated into self-powering wearable electronics.
基金
the National Natural Science Foundation of China(Grant Nos.51902104 and 12172127)
the Key Project of Scientific Research Project of Hunan Provincial Department of Education(Grant Nos.22A0515 and 21A0463)。
