Hou Yu, Dong Xuanli, Tang Wei, Li Ding
Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China.
Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China.
Materials (Basel). 2023 Jul 12;16(14):4970. doi: 10.3390/ma16144970.
Contact electrification (CE), a common physical phenomenon, is worth discussing. However, there are few reports on the influence of atmosphere on CE, or on the performance of triboelectric nanogenerators (TENG), based on CE by encapsulating gas inside. Here, we propose physical processes of electron transfer to interpret the impact of the gaseous atmosphere on CE. An atmosphere-filled triboelectric nanogenerator (AF-TENG) encapsulated five different gas-components of air based on the vertical contact separation mode was prepared. The sensitivity (1.02 V·N) and the power density (9.63 μW·m) of the oxygen-atmosphere-filled AF-TENG were 229.03% and 157.81% higher than these (0.31 V·N and 3.84 μW·m) of the nitrogen-atmosphere-filled AF-TENG. As the oxygen atom possesses more atomic energy levels than other atoms, this could act as a "bridge" for more electrons to directly transfer between the two materials. The device package under different atmospheres could not only strengthen understanding of CE and improve the performance of TENG, but also be potentially applicable to prevent and control unnecessary damage caused by static electricity.
接触起电（CE）作为一种常见的物理现象，值得探讨。然而，关于大气对接触起电的影响，或者基于在内部封装气体的接触起电对摩擦电纳米发电机（TENG）性能影响的报道却很少。在此，我们提出电子转移的物理过程来解释气态大气对接触起电的影响。制备了一种基于垂直接触分离模式封装五种不同空气气体成分的充气摩擦电纳米发电机（AF-TENG）。充氧的AF-TENG的灵敏度（1.02 V·N）和功率密度（9.63 μW·m）分别比充氮的AF-TENG（0.31 V·N和3.84 μW·m）高出229.03%和157.8%。由于氧原子比其他原子拥有更多的原子能级，这可以作为更多电子在两种材料之间直接转移的“桥梁”。不同大气环境下的器件封装不仅可以加深对接触起电的理解并提高TENG的性能，还可能适用于预防和控制由静电引起的不必要损害。
