In recent years, the usage of graphene oxide (GO) super capacitors with high energy densities in storage devices have attracted a tremendous attention. The transfer of graphene onto flexible polydimethylsiloxane (PDMS) substrates has been achieved by a simple, etching- free method. This transfer is due to the very low surface energy of PDMS. A TENG is used to convert mechanical energy into electricity by a conjunction of triboelectri?cation and electrostatic induction. In this research, PDMS surface was patterned using a nanoporous anodic titanium oxid template. After that, GO despersion was coated on PDMS patterned surface in different concentrations (0.1, 0.2, 0.4 and 0.5 wt%). The maximum power density of this device can reach up to 2.9 W/m 2 , voltage of 620 V and current density of 2.1 mA/m 2 are observed. In order to enhance the triboelectric performance of a single- friction triboelectric nanogenerator (S-TENG), the polymer composites consisting of various concentrations of GO nanosheets (0, 0.02, 0.05, 0.5, 1, and 1.5 wt%) were fabricated. The maximum power density of this device can reach up to 7.4 W/m 2 , voltage of 914.6 V and current density of 3.3 mA/m 2 are observed. It was concluded that the performance of the composite sample is better than the coated one. Because of the two dimensional nanostructure and excellent surface properties, the GO- based TENG shows a sensitive force detection and a antimicrobial activity. This device, which has a simple structure, was fabricated in a low- cost method and a simple manufacturing process. The generated electric energy could supply the power required for 100 commercial blue light emitting diodes (LEDs) without any energy storage process. This higher performance is due to the formation of nanopores and strengthened negative charges on PDMS from the fibrous structure and oxygen functional groups of GO, respectively. Performance of the devices are also systematically investigated under various motion types and pressure forces. on palm tapping the device. The developed TENG in this research, shows a great promise for applications in systems such as wearable electronic devices, self- powered touch panels, artificial skins and smart wireless sensor networks. Keywords: Triboelectric Nanogenerator, Graphene Oxide, Porous Structure, Polydimethylsiloxane,
