10.1021/acsnano.5b01187.s005 Xue Wang Xue Wang Shuhua Wang Shuhua Wang Ya Yang Ya Yang Zhong Lin Wang Zhong Lin Wang Hybridized Electromagnetic–Triboelectric Nanogenerator for Scavenging Air-Flow Energy to Sustainably Power Temperature Sensors American Chemical Society 2015 hybridized nanogenerator correspondence EMG 3 M Ω sensor TENG cm mW loading resistance 3300 μ F Sustainably Power Temperature SensorsWe report kW 2015-04-28 00:00:00 Media https://acs.figshare.com/articles/media/Hybridized_Electromagnetic_Triboelectric_Nanogenerator_for_Scavenging_Air_Flow_Energy_to_Sustainably_Power_Temperature_Sensors/2173105 We report a hybridized nanogenerator with dimensions of 6.7 cm × 4.5 cm × 2 cm and a weight of 42.3 g that consists of two triboelectric nanogenerators (TENGs) and two electromagnetic generators (EMGs) for scavenging air-flow energy. Under an air-flow speed of about 18 m/s, the hybridized nanogenerator can deliver largest output powers of 3.5 mW for one TENG (in correspondence of power per unit mass/volume: 8.8 mW/g and 14.6 kW/m<sup>3</sup>) at a loading resistance of 3 MΩ and 1.8 mW for one EMG (in correspondence of power per unit mass/volume: 0.3 mW/g and 0.4 kW/m<sup>3</sup>) at a loading resistance of 2 kΩ, respectively. The hybridized nanogenerator can be utilized to charge a capacitor of 3300 μF to sustainably power four temperature sensors for realizing self-powered temperature sensor networks. Moreover, a wireless temperature sensor driven by a hybridized nanogenerator charged Li-ion battery can work well to send the temperature data to a receiver/computer at a distance of 1.5 m. This work takes a significant step toward air-flow energy harvesting and its potential applications in self-powered wireless sensor networks.