The research team led by Professor Baik Jeong-min of the Advanced Materials Science and Engineering Department identified the contact electrification drift phenomenon and has developed a triboelectric nanogenerator (TENG) with the highest output power. TENG converts mechanical energy into electric energy via the contact electrification effect, a phenomenon caused by friction between two substances. The energy can also supply power to small electronic devices or sense unexpected stimuli in electronic skins and touch screens. However, the output power of existing TENG has declined under external environmental factors such as temperature. This is because contact electrification supplies less energy due to its low charge density, and most of the charges exist only on the surface. To solve this problem, the team designed a new material structure consisting of silicon dioxide and molybdenum disulfide and generated a superior density of 1,072μC/m². Through this method, the team could reach the highest output power of TENG and improve the charge speed by ten times. Prof. Baik stated, “This research can be appreciated for enhancing the charge density of TENG, and the stable output power will hopefully lead to the development of energy harvesting and sensory technologies.”