Achieving Ultra‐High Voltage (≈10 kV) Triboelectric Nanogenerators

Abstract

With the intrinsic characters of high voltage and low current, triboelectric nanogenerators (TENGs) serving as green high voltage (HV) power source exhibit excellent practicability and safety compared to traditional HV power sources. To further simplify the TENG-based HV power source system, a single electrode mode TENG (SE-TENG) with simple wiring is first employed to generate ultra-high voltage power in this work. By optimizing surface charge density and the thickness of packing layer between the primary electrode and reference electrode, a record value of 12.7 kV is achieved for SE-TENGs. Furthermore, a calculation method based on a capacitance model is proposed to accurately measure the open voltage of TENG with a wide range (over 10 kV). The SE-TENG-based HV power source is successfully applied to power electronics and generates negative air ions for air cleaning. This work significantly simplifies TENG-based HV power sources, and is expected to enrich the diversity of high-voltage applications based on the reach of existing technologies.

Triboelectric nanogenerators exhibiting ultrahigh charge density and energy density

“…1–6 Owing to their low cost, material diversity, low-frequency applicability and light weight, 7 TENGs are increasingly playing a significant role in various fields, covering micro/nano power sources, 8,9 self-powered sensing, 10,11 blue energy, 12,13 and high-voltage power sources. 14,15 However, the low energy density of TENGs, compared with commercial batteries, severely limits their practical usefulness in energy powering applications. To achieve a high energy density, the attainment of a high charge density is of utmost importance, given the quadratic relationship between energy density and charge density.…”

A Rotating Triboelectric Nanogenerator Driven by Bidirectional Swing for Water Wave Energy Harvesting

“…[10][11][12][13][14][15][16] Therefore, it is widely used in the field of self-driven sensing, micro/nano energy, blue energy, and high voltage power supply. [17][18][19][20] In addition, the TENG, which is fabricated by thin polymer films, porous materials, and metal electrodes, has the advantages of low weight and low cost. [21][22][23][24] Therefore, the floating wave power stations constructed from a grid of TENG is considered to be one of the most promising technologies for low-cost wave energy harvesting.…”