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

查看全文 作　　者：Siqi [1]Wang;Kunming [1]Shi;Bin [1]Chai;Shichong [2]Qiao;Zhuoli [2]Huang;Pingkai [1]Jiang;Xingyi [1]Huang 高影响力作者 机构地区：[1]Department of Polymer Science and Engineering,Shanghai Key Laboratory of Electrical Insulation and Thermal Aging,Shanghai Jiao Tong University,Shanghai,200240,China;[2]Department of Implantology,Shanghai Ninth Peoples'Hospital,College of Stomatology,Shanghai Jiao Tong University School of Medicine,National Clinical Research Center for Oral Diseases,Shanghai Key Laboratory of Stomatology&Shanghai Research Institute of Stomatology,Shanghai,China高影响力机构 出　　处：《Nano Materials Science》索引2022年第4卷第2期,共7页高影响力期刊 基　　金：Medical Engineering Cross Research Foundation of Shanghai Jiao Tong University(YG2021QN63). 摘　　要：The development of wearable and portable electronics calls for flexible piezoelectric materials to fabricate selfpowered devices.However,a big challenge in piezoelectric material design is to boost the output performance while ensuring its flexibility and biocompatibility.Here,all-organic and core-shell structured silk fibroin(SF)/poly(vinylidene difluoride)(PVDF)piezoelectric nanofibers(NFs)with excellent flexibility are fabricated using a simple electrospinning strategy.The strong intermolecular interaction between SF and PVDF promotes theβ-phase nucleation in the core-shell structure,which significantly enhances the output performance.An output of 16.5 V was achieved in SF/PVDF NFs,which is more than 6-fold enhancement compared with that of pure PVDF NFs.In addition,the piezoelectric device can sensitively detect the mechanical stimulation from joint bending,demonstrating its great potential in self-powered sensor.Otherwise,the piezoelectric device can be also applied to control the movement of a smart car,successfully,achieving its application in the human-machine interaction. 关 键 词：PVDF Silk fibroin PIEZOELECTRIC ELECTROSPINNING NANOFIBER
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