| Nowadays,triboelectric nanogenerator(TENG)has become one of the most popular energy harvesting technology that converts waste mechanical energy into electricity for reutilization.Tremendous efforts have been made to fabricate different TENG devices for a better energy conversion with high efficiency,but existing tribomaterials with low performance have limited the applications of TENG.Therefore,it is greatly needed to explore novel tribomaterial which is low cost,environmentally friendly with simple and fast synthesis process.So here,we investigated the combining behavior of tribopositive(polyaniline(PANI))and tribonegative(graphene oxide(GO))material as a novel type of tribopositive material for TENG.Under external force,the combination of PANI and GO introduces a new mechanism of creating a pathway for the flow of electrons inside the material.This mechanism helps to transfer some extra electrons from the non-contact area of the tribopositive material to the tribonegative layer which increases the surface charge density.And as a result,the electrical performance of TENG device enhances.Thus,the TENG device with dimension of 1×2 cm2 is fabricated by combining 700 μL PANI and 4 mg/ml GO based tribopositive material with polydimethylsiloxane(PDMS)as tribonegative layer.This TENG device has the potential to produce an open-circuit voltage of 314.92V and a current density of 37.81 mA/m2 with a peak power density of 10.43 W/m2 under the external force of 50 N with a frequency of 5 Hz.The obtained power can directly light up more than 175 white light-emitting diodes and also can charge the capacitor for later use.Amine group of PANI and pathway inside the tribopositive material to mobilize electrons are the main contributing factors for high electrical performance.So this work introduces a low cost,simple and fast fabrication process with a new working mechanism to acquire high performance TENGs for harvesting mechanical energy. |
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