Triboelectric Energy Harvesting from Polymeric Sulfur/MXene Composites

초록

A triboelectric nanogenerator (TENG) is an energy harvesting system that utilizes disordered mechanical energy as a useful energy source. The generation performance of TENG is highly influenced by the electrical properties of triboelectric materials, and the studies have been mainly limited to carbon backbone-based polymer materials for negative triboelectric materials. Recently, we reported first example of triboelectric energy harvesting of polymeric sulfur. Polymeric sulfur is found to be, a negative triboelectric material originating from the high electron affinity of the sulfur backbone. Herein, we investigate the effects of MXene coating on triboelectric performance of polymeric sulfur. Since MXene has outstanding electrical conductivity and electronegativity, MXene is reported to it shows remarkable triboelectric performance comparable to polytetrafluoroethylene (PTFE). Toward novel negative triboelectric polymers, and also overcomes the limitations of carbon backbone-based triboelectric materials. Ppolymeric sulfur/MXene films are fabricated by two different methods. First, MXene is spray-coated directly on polymeric sulfur film. We also spray-coated MXene on polymeric sulfur powder, followed by drying at room temperature and pressure and hot-pressing into film in order to prepare polymeric sulfur/MXene composite film. In this presentation, we will discuss processing-structure-property-performance relationships of polymeric sulfur/MXene composites by comparing TENG performance of neat polymeric sulfur with that of MXene-coated polymeric sulfur film as well as polymeric sulfur/MXene composite film.