Abstract
Zinc oxide nanotubes (ZnO NTs) show a promising application in triboelectric nanogenerators (TENGs) based on self-powered electronics. Herein, a single-electrode triboelectric nanogenerator (S-TENG) is developed based on polydimethylsiloxane (PDMS) surface modified using ZnO NTs through a cost-effective and simple chemical bath deposition (CBD). The ZnO NTs increased the surface roughness and provided a suitable path for the transition of electrons. Compared to the pristine PDMS-based S-TENG, ZnO NTs modified-PDMS showed an output voltage of 87.5 V, a current of 17.9 μA and a maximum power density of 36.16 μW/cm2, indicating 52 %, 184 % and 207 % enhancements, respectively. The effect of frequency was also investigated and the output voltage reached the maximum value with the dimension of 3 × 3 cm2. The working procedure of the S-TENG was also examined by utilizing the COMSOL software. This work gives a basic inside into the realization of the sliding-electrification characteristics of ZnO that show promise for electro-optic applications such as smartphone screen.
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