A simple way to harvest more ‘blue energy’ from waves

Science Daily  April 3, 2024 Due to the advantages of simple structure and flexibility for energy harvesting, the tube liquid–solid triboelectric nanogenerator (TLS-TENG) has attracted much attention. However, it is limited by low output power due to its low surface charge density and transfer efficiency. Researchers in China proposed and constructed TLS-TENG (SVE-TLS-TENG) with enhanced output performance. Through the space volume effect, the open-circuit voltage (Uoc), short-circuit current (Isc), and transfer charge (Qtc) of SVE-TLS-TENG they improved energy harvesting by 3.5 times, 2.3 times, and 2 times, respectively. The SVE-TLS-TENG has high output performance for harvesting low-frequency and high-entropy motion […]

This tiny device can scavenge wind energy from the breeze you make when you walk

TechXplore  September 23, 2020 A breeze as gentle as 1.6 m/s (3.6 mph) was enough to power the triboelectric nanogenerator designed by an international team of researchers (China, Singapore). The nanogenerator performs at its best when wind velocity is between 4 to 8 m/s (8.9 to 17.9 mph), a speed that allows the two plastic strips to flutter in sync.[see embedded video]. The device also has a high wind-to-energy conversion efficiency of 3.23%. Currently the device can power up 100 LED lights and temperature sensors. Unlike wind turbines, this device is made of low-cost materials and it can be safely […]