| 초록 |
As the energy crisis and global warming are emerging as major issues, the development of renewable and green energy based on alternative energy resources such as solar, wind, hydrogen or geothermal sources, has attracted considerable interest. The energy harvesting technologies based on these natural resources have been well established, and their use has gradually increased. Yet there are still many forms of energy sources in our living environment, which are not being utilized. Mechanical energy is one of the most representative sources that can be artificially generated from vibration, human walking, movement of automobiles, etc., which are abundant in the living environment, but all of which are usually wasted. Among these, a triboelectric nanogenerator (TENG) has attracted attention because of its simple fabrication, high conversion efficiency, and cost effectiveness. A TENG generates electric output through contact electrification, which is induced by friction between two dielectrics with different triboelectric polarity. However, their durability and stability needs to be improved for sustainable use because friction is the fundamental basis of TENGs. Thus, it is critically necessary to develop innovative strategies for developing TENG as a sustainable power source in order to consistently harvest the mechanical energy from the environmental sources for an extended period. In this talk, we introduce two strategies for a sustainable use of TENG: 1) Utilizing water as a triboelectric material and 2) Mechanical engineering design for a low-abrasive TENG. |
