The triboelectric nanogenerator (TENG) based on the contact-electrification and electrostatic induction are attractive for the abundant application in many disciplines. To explore the practical application of TENG devices, we firstly reported a novel TENG based on the white sugar (WS-TENG) to harvest mechanical energy, and simultaneously, which can also serve as the self-powered humidity sensor due to the essential hydrophilic property of white sugar molecules. In this work, the polytetrafluoroethylene (PTFE) film and white sugar play the role of triboelectric parts. Moreover, the electrical output of WS-TENG involved in the short-circuit current (I_sc) and open-circuit voltage (V_oc) can get to 6.35 µA and 95.68 V, respectively. The fabricated WS-TENG has good long-term durability and reliability. According to the experimental results, the self-powered humidity sensor based on the WS-TENG can reflect the humidity change of the environment. The current research could effectively promote the practical application of TENG devices.

基于接触带电和静电感应的摩擦电纳米发电机（TENG）对于许多学科中的广泛应用具有吸引力。为了探索TENG设备的实际应用，我们首先报道了一种基于白糖的新型TENG（WS-TENG）来收集机械能，同时，由于其基本的亲水性，它还可以用作自供电的湿度传感器。白糖分子。在这项工作中，聚四氟乙烯（PTFE）膜和白糖起着摩擦电部分的作用。此外，WS-TENG的电输出涉及短路电流（I _sc）和开路电压（V _oc））可分别达到6.35 µA和95.68V。制成的WS-TENG具有良好的长期耐用性和可靠性。根据实验结果，基于WS-TENG的自供电湿度传感器可以反映环境的湿度变化。当前的研究可以有效地促进TENG装置的实际应用。