A Water‐Driven and Low‐Damping Triboelectric Nanogenerator Based on Agricultural Debris for Smart Agriculture

Abstract

The rapid progress in distributed electronics in agriculture depends on a wide range of energy supplies, such as cables and batteries. However, cable installation and maintenance are inconvenient in the agricultural environment, and the massive use of batteries will cause high replacement costs and serious environmental issues. To mitigate these problems, a water flow‐driven and high‐performance triboelectric nanogenerator based on agricultural debris (including derelict plant fibers and recycled greenhouse film) (AD‐TENG) is developed. The precisely designed air gap and plant fiber‐based dielectric brushes enable minimized frictional resistance and sustainable triboelectric charges, resulting in low damping and high performance for the AD‐TENG. After nano‐morphology modifications of the dielectric layer, the maximum power density of the AD‐TENG increases by 64 times and reaches ≈1.24 W m−2. The practical application demonstrates that the AD‐TENG realizes the recycling of agricultural debris to achieve harvesting low‐frequency and low‐speed water‐flow energy. Besides, the AD‐TENG can be used to power agricultural sensors and develop the automatic irrigation system, which alleviates the energy consumption problem of agriculture and contributes to the realization of automated and informative intelligent agriculture.

Fabrication of Biomaterial-Based Triboelectric Nanogenerators: Study of the Relationship between Output Performance and Strain in Dielectric Materials

“…We can come to the conclusion that a PLA-based TENG device of vertical contact separation mode was successfully fabricated. For this reason, we demonstrate the possibility of the TENG device as a biomechanical energy harvester to generate electricity from the motion of both violent and subtle human movements in daily life. − By utilizing the as-fabricated TENG device as a self-powered body-tracking device application, we monitored a series of leg lifting, fingering, running, arm bending, and arm lifting movements, as displayed in Figure a. We can see that the maximum output voltage is ∼10.2, ∼10.3, ∼0.64, ∼0.58, ∼0.42, and ∼10.1 V, respectively, by fixing the TENG to palm, finger, elbow, underarm, knee, and foot (Figure a­(I–VI) and Movies S1–S6).…”

“…It is not an exaggeration to say that it shows considerable potential both as a sustainable source of motivation and as a self-powered exercise counter. Each peak can be performed as a counter for repeated practices. ,,,− The function of an exercise counter is to calculate the amount of activity required to perform each exercise correctly. To be precise, we can use the number of peaks to calculate the times of exercises.…”

Fabrication of a textile-based triboelectric nanogenerator toward high-efficiency energy harvesting and material recognition

“…2g-i in a step-by-step manner. [2][3][4][5][6][11][12][13][14][15][16]27 At the first stage (Fig. 2g-i A), no external stress is applied on the device, there is no interface interaction between the two materials, and as a result, no charge is generated.…”

“…To date, with the appearance of the era of the ''Artificial Intelligence'', TENG devices of single electrode mode were conceived and developed in tactile sensing, which can enable the ''Artificial Intelligence'' to recognize the material in contact. [13][14][15][16][17][18][19][20] Generally, deep learning uses convolutional neural networks (CNNs), which are essentially black boxes that can build features so that we don't have to input features manually. [21][22][23][24][25][26][27][28][29][30][31][32][33] This kind of system has a facile and unique identification process to achieve object identification and surpasses the organisms' identification (humans' vision, tactility and consciousness).…”

Triboelectric nanogenerators for smart agriculture

“…The invention of TENG provides a new idea to alleviate the power supply problem of distributed sensors in agriculture. TENGs are well suited to convert abundant and clean renewable energy sources in the agricultural environment, such as wind, [136][137][138] raindrops, [139][140][141] and water flow energy, [142][143][144][145] into electrical energy. In addition, self-powered sensing of agricultural information based on TENGs can be achieved through integration with power management, signal processing, and wireless transmission modules.…”