Design and research of non-contact triboelectric nanogenerator based on changing electrostatic field

Abstract

Triboelectric nanogenerator (TENG) and its self-powered sensor based on the principles of contact electricity generation and electrostatic induction have important application prospects in the fields of new energy and internet of things (IoT). In the contact separation process of polymer materials with different electronegativity values, due to the transfer of electrons, a changing electrostatic field will be generated in the space around the polymer. In the existing TENG research, the field strength perpendicular to the plane of the friction layer and the electrode layer is mainly used to generate electrostatic induction, and the electric field effect around the polymer is ignored. According to the principle of electrostatic induction, the internal charge of the conductor in the electric field will be redistributed, which provides a way for the conductor to generate an induced electrical signal on the surface of the conductor without contacting the friction material. In this paper, we design a non-contact triboelectric nanogenerator (NC-TENG) based on changing electrostatic field. The influence of the distance between the conductor and the friction material, the induction area of the conductor and the position of the conductor relative to the friction material on the induced electrical output performance are studied when silicone rubber and nitrile rubber are used as a friction material. The results show that the NC-TENG can produce a stable electrical signal output when the conductor is completely separated from the friction material. The induced voltage of NC-TENG decreases with the increase of the distance between the conductor and the friction material, and gradually increases with the increase of the conductor's induction area. For the friction material with a size of 30 mm × 30 mm, the electrical output of NC-TENG tends to be stable when its conductor area is 60 mm × 45 mm. In addition, the different orientation of the conductor relative to the friction material also has a significant effect on the induced electrical output. The NC-TENG designed in this paper provides a novel electrical output generation mode, which provides a higher possibility for the subsequent research on TENG and the application of self-powered sensors.

Ferroelectric Material in Triboelectric Nanogenerator

“…When an external load is imposed, electrons go through one side of the electrode to another aiming to balance the possible disparity; this process is known as electrostatic induction. TENGs utilize electrostatic induction and friction energization to transform kinetic energy into useful energy for electricity [ 80 ]. Besides that, TENGs operate based on four distinct modes: the vertical contact-separation setting, the lateral-sliding setting, the single-electrode setting, and the unsupported triboelectric-layer setting [ 81 ], as illustrated in Figure 6 .…”

Self‐Powered Position Monitoring System Based on Insole‐Type Wearable Triboelectric Nanogenerator and Bluetooth Beacon

“…The triboelectric nanogenerator (TENG) is a cutting-edge energy harvesting technology [9][10][11] that combines the principles of triboelectrification and electrostatic induction. Duo to its simple design, [12,13] low cost, [14][15][16] and a broad range of material options, [17,18] the TENG has shown great significance and application prospects in many fields [19][20][21] such as human kinetic energy harvesting [22][23][24] and self-powered wearable electronics.…”