Magnetic lifting triboelectric nanogenerators (ml-TENG) for energy harvesting and active sensing

Abstract

Triboelectric nanogenerators (TENG) have been reported with the advantages of high adaptability and easy integration in recent years, which, however, have been facing with the challenge of effective stimuli in different applications. In this study, we develop magnetic lifting triboelectric nanogenerators (ml-TENG) for energy harvesting and active sensing under cyclic loading, such as traffic. The ml-TENG take advantage of magnetic force to provide repulsive force to trigger for relative displacement between the electrode and dielectric layers in the sliding mode. Experimental and numerical studies are conducted to investigate the electrical performance of the ml-TENG under cyclic loading. The open-circuit voltage of 4 V and output power of 340 µW per capsule are obtained. In the end, we develop a self-powered velocity active sensing system using the ml-TENG, and the field test is conducted to obtain the maximum open-circuit voltage of 7.2 V at the velocity of 15 km/h. The reported ml-TENG provide a powerful tool to develop active sensing systems for real-world applications, such as velocity detection.

The potential application of the triboelectric nanogenerator in the new type futuristic power grid intelligent sensing

“…In 2021, Ali Matin Nazar et al designed a TENG (Magnetic Lift TENG, ML-TENG) with a magnetic suspension structure, using the exclusion force between magnets to separate the triboelectric layer. 90 As shown in Figure 8C-i, because the bottom of the actuator and the bottom of the base magnet polarity is the same, the side of M 3 and M 5 polarity is the same, when the actuator by external mechanical force into the base, M 5 will be pushed, when the external force is removed, the actuator under the action of the bottom magnet return, M 5 will also return, and then drive the friction layer components relative sliding. A self-powered speed sensor is developed using the ml-TENG, as shown in Figure 8C These studies have provided a practical path for TENG's applications in intelligent sports testing, expanded TENG's application field, and made important contributions to the development of self-powered sensors.…”

“…76 (C) A self-powered sensor based on a TENG-based maglev structure. 90 (D) A magnetic ring layer TENG is used for velocity sensing and damage detection. Copyright 2022, Elsevier.…”

Noncontact liquid–solid nanogenerators as self-powered droplet sensors

“…Compared with self-powered sensor devices in the form of piezoelectric nanogenerators, triboelectric nanogenerators, and pyroelectric nanogenerators, L-S TENG has a simple structure and low cost and have the ability to sense various forms of water and input corresponding to output electrical signals or electrical energy [9][10][11]. L-S TENG is favored in the fields of energy harvesting [12][13][14][15] and self-driven sensing [16][17][18].…”

Recent Progress of Triboelectric Nanogenerators for Biomedical Sensors: From Design to Application

“…Triboelectric nanogenerators (TENGs) are energy-harvesting devices that use the triboelectric effect to produce electrical power. TENGs are employed in various sectors, including communications (mobile phones), medical (health field) [ 1 , 2 , 3 , 4 ], energy absorption from ocean waves [ 5 , 6 , 7 , 8 , 9 , 10 , 11 ], and other fields, demonstrating the significant potential of this field in the future. Energy has always been among the most important themes in human history, as is currently the case [ 12 , 13 , 14 ].…”