State Key Laboratory for Modification of Chemical Fibres and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China.
Nanotechnology. 2013 Oct 11;24(40):405401. doi: 10.1088/0957-4484/24/40/405401. Epub 2013 Sep 12.
PVDF nanofibre-based piezoelectric nanogenerators are directly prepared via electrospinning without any post-poling treatment. The effect of the addition of multi-walled carbon nanotubes (MWCNTs) on the fibre diameter, mechanical properties, β-phase composition, surface and volume conductivities, output voltage and output power are investigated. Increased surface conductivity of the poly-vinylidene fluoride (PVDF) nanofibre mats, which plays an important role in the enhancement of output power, is first found by the addition of an appropriate amount of MWCNTs. The maximum generated piezo-voltage exhibited by PVDF nanofibre mats in the presence of 5 wt% MWCNTs is as high as 6 V, while the average capacitor charging power is 81.8 nW, increases of 200% and 44.8%, respectively, compared with bare PVDF nanofibre mats.
基于聚偏二氟乙烯（PVDF）纳米纤维的压电纳米发电机无需进行任何后极化处理，通过静电纺丝直接制备。研究了添加多壁碳纳米管（MWCNTs）对纤维直径、力学性能、β 相组成、表面和体积电导率、输出电压和输出功率的影响。通过添加适量的 MWCNTs，首次发现聚偏二氟乙烯（PVDF）纳米纤维垫的表面电导率增加，这对提高输出功率起着重要作用。在添加 5wt%MWCNTs 的情况下，PVDF 纳米纤维垫产生的最大压电电压高达 6V，而平均电容器充电功率为 81.8nW，分别比裸 PVDF 纳米纤维垫增加了 200%和 44.8%。
