Qiao Wenyan, Zhou Linglin, Zhao Zhihao, Yang Peiyuan, Liu Di, Liu Xiaoru, Liu Jiaqi, Liu Dongyang, Wang Zhong Lin, Wang Jie
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, People's Republic of China.
School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
Nanomicro Lett. 2023 Oct 7;15(1):218. doi: 10.1007/s40820-023-01198-z.
Tribovoltaic nanogenerators (TVNGs) have the characteristics of high current density, low matched impedance and continuous output, which is expected to solve the problem of power supply for small electronic devices. However, wear occurrence in friction interface will seriously reduce the performance of TVNGs as well as lifetime. Here, we employ MXene solution as lubricate to improve output current density and lifetime of TVNG simultaneously, where a high value of 754 mA m accompanied with a record durability of 90,000 cycles were achieved. By comparing multiple liquid lubricates with different polarity, we show that conductive polar liquid with MXene as additive plays a crucial role in enhancing the electrical output performance and durability of TVNG. Moreover, the universality of MXene solution is well demonstrated in various TVNGs with Cu and P-type Si, and Cu and N-GaAs as material pairs. This work may guide and accelerates the practical application of TVNG in future.
摩擦纳米发电机（TVNGs）具有高电流密度、低匹配阻抗和连续输出的特点，有望解决小型电子设备的供电问题。然而，摩擦界面出现磨损会严重降低TVNGs的性能以及使用寿命。在此，我们采用MXene溶液作为润滑剂，以同时提高TVNGs的输出电流密度和使用寿命，实现了754 mA m的高值以及90000次循环的创纪录耐久性。通过比较多种不同极性的液体润滑剂，我们表明以MXene为添加剂的导电极性液体在增强TVNGs的电输出性能和耐久性方面起着关键作用。此外，MXene溶液的通用性在以Cu和P型Si以及Cu和N - GaAs作为材料对的各种TVNGs中得到了很好的证明。这项工作可能会指导并加速TVNGs在未来的实际应用。
