Highly Transparent and Mechanically Robust Energy‐harvestable Piezocomposite with Embedded 1D P(VDF‐TrFE) Nanofibers and Single‐walled Carbon Nanotubes. (18th January 2023)

• Record Type: Journal Article
• Authors: Kim, Kiyong; Lee, Sangsu; Nam, Jeong‐Seok; Joo, Minkyeong; Mikladal, Bjørn; Zhang, Qiang; Kauppinen, Esko I.; Jeon, Il; An, Seongpil
• Is Part Of: Advanced functional materials. Volume 33:Number 14(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2023-01-18
• Subjects: fiber‐reinforced polymer (FRP) composites -- P(VDF‐TrFE) nanofibers -- piezoelectric nanogenerators -- single‐walled carbon nanotubes (SWCNTs) -- wearable electronics; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202213374
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: Herein, highly transparent, flexible, and ultrathin piezocomposite, in which electrospun poly(vinylidene fluoride‐co‐trifluoroethylene) [P(VDF‐TrFE)] nanofibers (NFs) and aerosol‐synthesized single‐walled carbon nanotubes (SWCNTs) are embedded in elastomer matrix, is fabricated. The P(VDF‐TrFE) NF mat is exploited as a piezoelectric layer of the piezocomposite while the SWCNT film is applied as a transparent conductive electrode thereof. The use of these 1D nanomaterials allows the piezocomposite not only to be high transparency along with low diffusion of light (i.e., haze factor) but also to exhibit enhanced mechanical properties. In addition, the coupling effect of piezo‐ and flexoelectricity exhibited from the electrospun NFs and the acid‐doping effect conducted on the SWCNTs facilitates a significant improvement in kinetic energy‐harvesting performance, leading to a maximum output voltage of 26.8 V. Moreover, electrospinning and aerosol chemical vapor deposition methods employed here are facile, scalable, and cost‐effective, thus are expected to accelerate the development of industrially feasible next‐generation wearable electronics. Abstract : Body‐attachable piezocomposite capable of harvesting and sensing human motion is fabricated. The combination of electrospun P(VDF‐TrFE) nanofiber mat and aerosol‐synthesized single‐walled carbon nanotube film enables one to achieve ultrathin, highly transparent, and mechanically durable piezocomposite. A piezoelectric nanogenerator (PENG) based on this piezocomposite demonstrates its feasibility as an energy‐harvestable haptic device for healthcare applications.