Journal
NANO ENERGY
Volume 34, Issue -, Pages 233-241Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2017.02.032
Keywords
Triboelectric nanogenerator; Adhesion energy; Conformal contact; Micropillar; Poly(dimethylsiloxane)
Categories
Funding
- National Research Foundation of Korea - Korean Government [2013R1A3A2042196]
- National Research Foundation of Korea (NRF) - Korean Government (MSIP) [NRF-2015R1A2A1A10054164]
- KRICT - Korea Research Institute of Chemical Technology [SI-1602]
- National Research Foundation of Korea [2015R1A2A1A10054164, 2013R1A3A2042196, 2015H1A2A1033923] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Structural modification of the surface has been widely investigated in triboelectric energy generation to improve the power harvested. Large contact area, large surface area and good dielectric performance are the basic design principles needed for the structures, while energy harvesting from low-energy mechanical motions is desirable. This work suggests that a film-covered pillar structure made of polydimethylsiloxane (PDMS) improved its output performance by satisfying all the basic design parameters, especially, the conformable contact and easy deformation. The contact area and the adhesion energy of the film-covered pillar structure are quantitatively compared with those from the flat PDMS substrates and the pillar-only structures. We report that the film covered pillar structure remarkably enhances the charge generation and increases the output voltage and the current density. We also emphasize the optimized thickness of the cover film for triboelectric performance. The triboelectric power generator operating by low-energy mechanical motions like a gentle finger-touch has been demonstrated as a possibility for human-based energy harvesting device in the future.
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