Single BaTiO3 nanowires-polymer fiber based nanogenerator. (January 2015)

• Record Type: Journal Article
• Authors: Zhang, Min; Gao, Tao; Wang, Jianshu; Liao, Jianjun; Qiu, Yingqiang; Xue, Hao; Shi, Zhan; Xiong, Zhaoxian; Chen, Lifu
• Is Part Of: Nano energy. Volume 11(2015:Jan.)
• Page Start: 510
• Page End: 517
• Publication Date: 2015-01
• Subjects: Single fiber -- Piezoelectric nano generator -- Self-alignment -- Wearable device; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2014.11.028
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: A super flexible nanogenerator based on BaTiO3 nanowires- polyvinyl chloride(PVC) composite single fiber was reported. The fabricating process of the nanogenerator consists of three main steps. In the first step, the <001> oriented BaTiO3 nanowires are prepared by topochemical synthesis. Secondly, the BaTiO3 nanowires-polymer composite fibers were fabricated by spinning method, and the BaTiO3 nanowires with high aspect ratio were assembled into PVC matrix to form composite fibers. The shearing stress during the spinning process make the BaTiO3 nanowires uniformly align along the fiber. Finally, BaTiO3 nanowire-polymer composite fibers were transferred onto a receiving substrate which has been covered with interdigital electrodes previously by ink-printing. The single highly <001> oriented BaTiO3 nanowire-polymer fiber based nanogenerator (SFBNG) demonstrated an output voltage up to 0.9 V and an output current up to 10.5 nA when the nanogenerator was fixed on human finger and the finger was bended. This research opens up the path for improve the robustness and output performance of wearable, especially textile nanogeneragtors. Graphical abstract: A single fiber–based nanogenerators present a good performance as wearable device for harvesting the energy of human movement. The spinning process makes the BaTiO3 nanowires aligned in the PVC matrix. The superior performance of the single fiber–based nanogenerator (SFBNG) may be attributed to both the high piezoelectric constant and the mechanical property. A maximum output voltage of 0.9V and output current of 10.5nA were obtained from the SFBNG when it bending by the finger movement. The enhanced performance, the flexibility and ultrahigh tensile strength of the composite fiber make it a promising materials for energy harvesting as wearable generators. Highlights: <001> Oriented BaTiO3 nanowires were successfully assembled in PVC polymer to form high-strength piezoelectric microfiber via spinning technique. The reinforced mechanism of output performance of the fiber was studied and analyzed. A flexible single fiber based wearable nanogenerator was fabricated and demonstrated the energy harvesting of human body motion.