Improving Triboelectric Nanogenerator Performance Using AAO and Nanopatterned PDMS

Tuesday, 3 October 2017: 09:50
Chesapeake E (Gaylord National Resort and Convention Center)
N. D. Huynh and D. Choi (Kyung Hee University)
The huge environmental crises nowadays from energy consumption pushes the use of green energy grow rapidly, such as the harvest of solar, waves, wind, geothermal, or mechanical energy sources. Among these techniques, triboelectric nanogenerators (TENG) have a promising potential based on the triboelectrification and electrostatic induction. Even though, TENG have high power conversion efficiency in many previous study but low output power. Here, we focus on the improvement of the output of TENG based on anodic aluminum oxide (AAO) and nanopatterned polydimethylsiloxane (NP-PDMS) soft-lithography. The TENGs were fabricated by using PDMS with a nanoporous AAO template as a replica mold. The AAO nanopore arrays can be formed by a low cost, light weight, and simple manufacturing process. For bottom electrode, after PDMS was laminated on the nanoporous AAO arrays (PDMS/AAO), it was stuck to Aluminum foil. In order to peel off the nanostructure PDMS from AAO arrays easily, the AAO was treated by HDFS (heptadecafluoro-1,1,2,2-tetrahydrodecyl trichlorosilane) before laminating. By changing the period and diameter of NP-PDMS, we find the optimum TENG output. For the top electrode, we test with AAO and Al foil. With external input frequency of 5 Hz and force of 5N to the TENG device, we can obtain maximum output of 520V open-circuit voltage and 24uA short-circuit current for Al foil as top electrode and 125nm period, 60nm diameter NP-PDMS as bottom electrode. This TENG device after rectification was able to drive 180 LEDs connected in series.