Core-shell structured silk Fibroin/PVDF piezoelectric nanofibers for energy harvesting and self-powered sensing

• DOI: 10.1016/j.nanoms.2021.07.008
• Publication Date: 2021-08-07T06:01:22Z
• Authors: Siqi Wang; Kunming Shi; Bin Chai; Shichong Qiao; Zhuoli Huang; Pingkai Jiang; Xingyi Huang
• Keywords: Fibroin; Electrospinning; Biocompatibility; Nanogenerator; Flexible Electronics

The development of wearable and portable electronics calls for flexible piezoelectric materials to fabricate self-powered devices. However, a big challenge in material design is boost the output performance while ensuring its flexibility biocompatibility. Here, all-organic core-shell structured silk fibroin (SF)/poly(vinylidene difluoride) (PVDF) nanofibers (NFs) with excellent are fabricated using simple electrospinning strategy. strong intermolecular interaction between SF PVDF promotes β-phase nucleation structure, which significantly enhances performance. An 16.5 ​V was achieved SF/PVDF NFs, more than 6-fold enhancement compared that pure NFs. In addition, device can sensitively detect mechanical stimulation from joint bending, demonstrating great potential sensor. Otherwise, be also applied control movement smart car, successfully, achieving application human-machine interaction.