Effects of liquid metal particles on performance of triboelectric nanogenerator with electrospun polyacrylonitrile fiber films
Effects of liquid metal particles on performance of triboelectric nanogenerator with electrospun polyacrylonitrile fiber films
复制标题
液态金属颗粒对静电纺聚丙烯腈纤维膜摩擦纳米发电机性能的影响
DOI：
10.1016/j.nanoen.2019.04.075
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发表时间：
2019-07-01
期刊：
影响因子：
17.6
通讯作者：
Luo, Jikui
中科院分区：
文献类型：
--
作者：
Ye, Qikai;Wu, Yongzhi;Luo, Jikui
液态金属（LM）已被用作高性能摩擦电纳米发电机（TENG）的柔性电极，但目前还不清楚摩擦层中的LM将如何影响TENG的性能。在这里，我们报告的LM颗粒纳入到一个摩擦层上的TENGs的性能的影响的调查。TENG由聚丙烯腈（PAN）静电纺丝膜和聚四氟乙烯（PTFE）薄膜组成。将不同浓度的LM粒子掺入PAN聚合物基体中，通过静电纺丝法制备PAN纳米纤维膜。结果表明，随着LM含量的增加，TENGs的产量明显增大。具体而言，电流密度增加了约40%，电荷密度和输出电压都增加了近70%。与具有纯PAN摩擦层的TENG相比，具有1.5重量% LM浓度的TENG的总输出功率高约2倍。然而，当LM质量含量增加到2.5wt%时，PAN/LM-PTFE TENG的输出急剧恶化，在该质量含量下，复合材料包含高密度的LM球状体和纺锤体颗粒，恶化了摩擦电荷的产生。
Liquid metal (LM) has been used as flexible electrodes for high performance triboelectric nanogenerators (TENGs), however it is unclear how the LM in tribo-layers would affect the performance of TENGs. Here, we report the investigation on the effects of LM particles incorporated into a tribo-layer on the performance of TENGs. The TENGs consist of a polyacrylonitrile (PAN) electrospinning nanofiber membrane, and a polytetrafluoroethylene (PTFE) thin film. LM particles with different concentrations are incorporated into PAN polymer matrix, and used to make the PAN nanofibers membranes by electrospinning. Result shows that the outputs of TENGs become much larger with the increase in LM content. Specifically, the current density increases by about 40%, and both the charge density and output voltage increase by nearly 70%. The overall output power is approximately 2 times higher for the TENG with 1.5 wt% LM concentration, as compared to those of TENGs with pure PAN tribo-layer. However, the output of PAN/LM-PTFE TENGs deteriorates drastically when the LM mass content is increased to 2.5 wt%, at which the composite contains a high density of LM spheroid and spindle particles, deteriorating the generation of triboelectric charge.