화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.30, No.3, 172-182, March, 2022
DOI10.1007/s13233-022-0020-1  Export Citation
Effect of β-Chain Alignment Degree on the Performance of Piezoelectric Nanogenerator Based on Poly(Vinylidene Fluoride) Nanofiber
Khatatbeh Ibtehaj†, Mohammad Hafizuddin Hj. Jumali†, Sameer Al-Bati, Poh Choon Ooi1, Bandar Ali Al-Asbahi2, and Abdullah Ahmed Ali Ahmed3
  • Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
  • 1Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
  • 2Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
  • 3Center for Hybrid Nanostructures (CHyN) and Fachbereich Physik, Universität Hamburg, 20146, Hamburg, Germany
E-mail:,
This work demonstrated the effect of the β-chain alignment degree on piezoelectric nanogenerator (PNG) performance. A simple, safe and low-cost fast-centrifugal spinning technique was used to produce self-poled poly(vinylidene fluoride) (PVDF) nanofiber. PNG based on acetone-prepared PVDF fibers, with high β-chain alignment, generated output open-circuit voltage (VOC) and short-circuit current (ISC) five times higher than the film counterpart. In addition, the fibers showed a remarkable increase in β-chain alignment degree as the ratio of N,N-dimethylformamide (DMF) solvent increased. The optimum nanofiber with the highest β-chain alignment degree, β-fraction and piezoelectric charge coefficient of 0.93, 91.8% and -120 pC.N− was obtained, respectively. PNG based on the optimum fiber displayed the highest VOC, ISC and power density of 14 V, 1.4 µA and 6.7 µWcm−2, respectively. This performance is greater than any PNG made from electrospun PVDF fiber. The excellent performance of the fabricated PNGs was strongly related to the high alignment degree of β-chains parallel along the fiber axis. In addition, due to low Young’s modulus (1.63 MPa) of the optimum fibers, the related lead-free PNG is sensitive to small movements and can be used in wearable and implanted medical devices.
Keywords:β-chain alignment degree;dipole re-orientation;Young’s modulus;self-poled PVDF nanofibers;ferroelectric properties;highperformance flexible PNG
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