期刊
NANO ENERGY
卷 97, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2022.107216
关键词
Biomimetic morphology; Polyvinylidene difluoride; Piezoelectric nanogenerator; Barium titanate; Melt spinning
类别
资金
- DGIST R&D program of the Ministry of Science and ICT of the Republic of Korea [21-ET-08]
- National Research Foundation of Korea [21-ET-08] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study investigated the effects of component morphology on the performance of a piezoelectric nanogenerator. It was found that the cross-sectional morphology of the PVDF fiber significantly influenced the piezoelectric performance, with the daffodil flower-shaped PVDF fiber exhibiting the best performance. The morphology of the BaTiO3 component (nanoparticles and nanorods) was also found to affect the performance of the nanogenerator, with the nanorod morphology showing excellent performance.
In this study, the effects of the morphology of components on the performance of a piezoelectric nanogenerator were investigated. Polyvinylidene fluoride (PVDF) fibers with biomimetic cross-sectional morphologies inspired by plants were fabricated by integrating melt spinning, winding, and corona poling. The cross-sectional morphology of the PVDF fiber significantly influenced the piezoelectric performance because of differences in the exterior surface area and contact volume, which are important in the production of beta-phase PVDF and crystallinity. The daffodil flower-shaped PVDF fiber exhibited the best piezoelectric performance among the PVDF fibers with various biomimetic cross-sectional morphologies (i.e., daffodil flower, radish flower, papyrus stem, and stalk grain stem) possessing different active areas for piezoelectricity generation. Its open-circuit voltage of 36.05 V and short-circuit current of 3.126 mu A are attributable to its highest exterior surface area and contact volume, which maximize the active area (deformation area) for piezoelectricity generation. The effect of the morphology (nanoparticles and nanorods) of BaTiO3, which is another component of the piezoelectric nanogenerator, was also investigated using BaTiO3-contained PVDF fibers involving the daffodil flowerlike cross-sectional morphology, namely, the PVDF-daffodil/BaTiO3 nanoparticle (NP) and PVDF-daffodil/BaTiO3 nanorod (NR). Compared with nanoparticles, the rod morphology more efficiently promoted asymmetry in the fiber during fabrication. The PVDF-daffodil/BaTiO3 NR produced an excellent open-circuit voltage of 62 V and a maximum power of 91 mu W from human motion. This study provides new insights for the practical mass production and utilization of high-performance piezoelectric nanogenerators.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据