A fully packaged self-powered sensor based on near-field electrospun arrays of poly(vinylidene fluoride) nano/micro fibers

eXPRESS Polymer Letters

Y.-K. Fuh¹ 

关键词: smart polymers;    electrical properties;    poly(vinylidene fluoride) (PVDF);    near-field electrospinning (NFES);    graphene-based piezoelectric generator (GBPG);   

DOI  :  10.3144/expresspolymlett.2018.12

学科分类：生物科学（综合）

来源: eXPRESS Polymer Letters

【 摘 要 】

Energy harvesting devices based on the triboelectric and piezoelectric principles have been widely developed toscavenge wasteful and tiny mechanical energy into usable electrical energy. In particular, triboelectric energy harvestinggenerators with relatively simpler structure and piezoelectric fiber-based counterpart with extremely light weight compositionsshowed a very promising application in the self-powered sensors. In this paper, a novel hybridization of graphenebasedpiezoelectric generator (GBPG) and graphene-PET triboelectric generator (GPTG) were simultaneously packaged.The integrated structure, graphene-based hybridized self-powered sensor (GHSPS), was demonstrated to be optically transparentand mechanically robust. For the piezoelectrically harvesting device, an in-situ poling and direct-write near-fieldelectrospinning (NFES) Poly(vinylidene fluoride) (PVDF) piezoelectric fibers were fabricated and integrated with a singlelayer chemical vapor deposition (CVD) grown graphene. On the other hand for GPTG counterpart, two composite layers ofa single layer graphene/PET simultaneously served as triboelectrically rubbing layers as well as bottom/top electrode. ThisGHSPS successfully superimposed both piezoelectric and triboelectric electricity and the synergistically higher output voltage/current/power were measured as ~6 V/280 nA/172 nW in one press-and-release cycle of finger induced motion. Theproposed GHSPS showed a promising application in the field of self-powered sensors to be ubiquitously implemented inthe future Industry 4.0 scenarios.

【 授权许可】

CC BY