MOF‐Decorated DC‐Tribovoltaic Nanogenerator Integrated with Self‐Charging Supercapacitor for Smart PC Screen Time Management
Conventional triboelectric nanogenerators generate direct current using auxiliary methods such as rectification circuits, mechanical switches, and the air breakdown principle, which increases the device's complexity and presents several limitations. In this work, a facile direct current tribovoltaic nanogenerator (DC-TVNG) is proposed, where charge carriers are generated at a metal-semiconductor heterojunction, producing a DC signal in the direction of the electric field. The heterojunction is formed using Al metal and ZIF-67/PEDOT:PSS polymer semiconductor, where the incorporation of ZIF-67 lowers work function of PEDOT:PSS and enhances the electric field, resulting in twofold increase in output performance compared to pristine PEDOT:PSS. Likewise, a supercapacitor is integrated with DC-TVNG, which charges independently via the triboelectric mechanism by gently sliding over the semiconductor surface, thus functioning as a self-charging supercapacitor. The DC-TVNG delivers a power density of 9.2 mW m−2 at 10 kΩ, quickly charging the supercapacitor (areal capacitance-110 µF cm−2) to 1 V in 5.5 s, without using any rectification methods. As a proof of concept, the integrated device is utilized to develop a recommendation system designed to mitigate risks associated with prolonged screen time. This work marks the first demonstration of directly charging a supercapacitor via the tribovoltaic mechanism, opening new avenues for the development of integrated systems and smart electronics.
Similar Publications:
The breathability of wearable sensors is of utmost necessity as it facilitates heat dissipation and sweat evaporation from the skin–sensor interface fo...
Maintaining clean and fresh pool water requires regular monitoring and treatment. However, the employed methods are manual, complex, and time-consuming. Here...
The functionality and use of wearable triboelectric nanogenerators (TENGs) are significantly impacted by the development of their tribomaterial properties. H...
Biomechanical energy harvesting shows great potential in the fields of smart electronics and biomedical Internet of Things. However, it is a significant chal...
Self-powered arbitrary wave mornitoring is a hot research topic which aims to remove of the trouble associated with managing conventional power for continuou...
The triboelectric material properties and mechanical stability of the contact layer are vital to achieving durable triboelectric nanogenerators (TENGs) with ...
Realization of self‐charging, miniaturized, portable, high output, and sustainable energy harvesting devices with wide application areas and good storage u...
The fast growth of smart electronics requires novel solutions to power them sustainably. Portable power sources capable of harve...