Journal
NANO ENERGY
Volume 61, Issue -, Pages 381-388Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2019.04.075
Keywords
Polyacrylonitrile; Liquid metal; Nanocomposite; Electrospinning; Triboelectric nanogenerator
Categories
Funding
- National Key R&D program of China [2018YFC0810200, 2016YFC0801301]
- National Natural Science Foundation of China [21703204, U1613202, U1609210]
- Key Research and Development Project of Zhejiang [2018C01048]
- Fundamental Research Funds for Central Universities [2016QNA5005, 2016XZZX001-05]
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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.
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