Due to the increasing deman‎d in the use of electronic tools an‎d equipment, the use of electrical energy an‎d obtaining it, especially from clean an‎d recoverable sources, has been highly regarded by societies an‎d scientists. For this reason, it will be obvious to develop nanogenerators (tools for converting other energies into electrical energy) with high speed an‎d technology. Among the types of nanogenerators, triboelectric nanogenerators have a special place due to their advantages such as high efficiency, low cost, an‎d wide range of materials used. Because the nature of the output of these devices is alternating, one of the improvements achieved in the output of these nanogenerators is achieving direct current instead of alternating current, which is due to the use of many electronic equipment an‎d power storage sources from direct current an‎d the elimination of additional equipment in the direction of miniaturization. The more these nanogenerators double their efficiency in practical applications. In this research, using the effect of electrostatic decomposition, a nanogenerator was made that produces direct electric current without using external rectifiers. First, by applying a nickel-phosphorus-teflon composite coating layer as a negative triboelectric layer on an aluminum substrate, the negative layer of the nanogenerator was made by electroless coating method, an‎d then by using another aluminum sheet as the positive layer an‎d the electrode, a triboelectric nanogenerator was made. It was made with alternating voltage an‎d current output. After making an‎d observing the performance, in order to investigate the effect of the presence of two-dimensional structures in the triboelectric layer of the nanogenerator, graphene oxide an‎d graphite carbon nitride nanoplates were used. The voltage of the nanogenerator increased dramatically after using these two substances. So that before using these materials, the voltage value was 1371 volts, an‎d after using graphene oxide an‎d graphite carbon nitride nanoplates, the recorded numbers for voltage were 2160 an‎d 2577 volts, respectively. After this step, by placing another aluminum electrode next to the previous two electrodes an‎d using the effect of electrostatic decomposition, the output voltage an‎d current of the nanogenerator was changed from alternating to direct. The output voltage recorded in the direct mode for the triboelectric nanogenerator was 894 volts, an‎d the current an‎d power for a system with dimensions of 3 x 3 cm was equal to 388.5 microamps an‎d 77.7 watts per square meter. In the end, due to the optical absorption properties of graphite carbon nitride nanoplates, the nanogenerator made with this material was used as an ultraviolet ray sensor an‎d it was observed that under the ultraviolet radiation, the output voltage of the nanogenerator made in optimal conditions increased by 24%, which confirms the use of this device as a sensor detection of ultraviolet rays present in the environment. According to the extraordinary performance of graphite carbon nitride in improving the triboelectric properties of the negative layer in this research an‎d due to the favorable properties of this material such as easy synthesis, reasonable price, excellent temperature an‎d chemical stability, graphite carbon nitride can be one of Very suitable options for making the triboelectric layer of triboelectric nanogenerators.

فتح اله كريم زاده , محمدحسن عباسي

محمدحسين عنايتي , مهران نحوي