Elasto-Aerodynamics-Driven Triboelectric Nanogenerator for Scavenging Air-Flow Energy

Abstract

Efficient scavenging the kinetic energy from air-flow represents a promising approach for obtaining clean, sustainable electricity. Here, we report an elasto-aerodynamics-driven triboelectric nanogenerator (TENG) based on contact electrification. The reported TENG consists of a Kapton film with two Cu electrodes at each side, fixed on two ends in an acrylic fluid channel. The relationship between the TENG output power density and its fluid channel dimensions is systematically studied. TENG with a fluid channel size of 125 × 10 × 1.6 mm(3) delivers the maximum output power density of about 9 kW/m(3) under a loading resistance of 2.3 MΩ. Aero-elastic flutter effect explains the air-flow induced vibration of Kapton film well. The output power scales nearly linearly with parallel wiring of multiple TENGs. Connecting 10 TENGs in parallel gives an output power of 25 mW, which allows direct powering of a globe light. The TENG is also utilized to scavenge human breath induced air-flow energy to sustainably power a human body temperature sensor.

Low Detection Limit and High Sensitivity Wind Speed Sensor Based on Triboelectrification‐Induced Electroluminescence

“…The potential reaches the maximum value at the largest displacement point (states II and IV) and rapidly drops back to the minimum value in the balance position (states I and III). Consistent with other reports, [29] the degrees of film deformation are similar to each other as the wind speed increases over 10 m s −1 , indicating that the ZnS:Cu+PDMS film is stable when wind speed at the inlet reaches a certain value. The oscillatory behaviors of the ZnS:Cu+PDMS film at wind speed of 10 m s −1 were captured by a high-speed camera as shown in Figure 3b (the overall procedure refers to Movie S1, Supporting Information).…”

Conducting polymer PPy nanowire-based triboelectric nanogenerator and its application for self-powered electrochemical cathodic protection

“…1–3 Harvesting energies from the ambient environment would be one of the most promising approaches to relieve the threat of energy depletion. 4,5 Recently, the triboelectric nanogenerator (TENG), a new type of mechanical energy harvesting device invented by Wang and co-workers in early 2012, 6 has been widely studied to produce electricity by harvesting almost all kinds of mechanical energy that exist in our daily life, such as human motion, 7 vibration energy, 8,9 wind energy, 10,11 water wave energy, 12,13 air-flow energy, 14 rain drops, 15 sound energy, 16 etc. …”

Humidity‐Resistive Triboelectric Nanogenerator Fabricated Using Metal Organic Framework Composite

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triboelectric nanogenerator (TENG), based on the coupling of triboelectrification and electrostatic induction, [5][6][7][8][9][10] has been proved as a cost-effective, simple, and efficient technique, which can directly convert mechanical energy such as wind flows, ocean waves and human motions into electric energy. [11][12][13][14][15][16][17][18][19][20] Recently, various strategies have been reported to improve the performance of TENG, such as selection of suitable triboelectric materials, [21] charge injection, [22] control of morphology, [23] and structural optimization. [24] Of all the above mentioned methods, the selection of the material is the most effective way to fundamentally improve the performance of the TENG via the increase of the surface charge density, but it is usually confined to some conventional materials from triboelectric series.

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