Strategy for Improving Cycle of Maximized Energy Output of Triboelectric Nanogenerators

Triboelectric nanogenerator (TENG) is a new energy harvesting technology proposed in recent years. However, the output energy per cycle from TENG to a load has been proven to be confined within Cycle of Maximized Energy Output (CMEO) which is always used as a common standard to evaluate the performance of a TENG. In this work, a new energy extraction strategy is proposed that utilizes the energy of TENG’s negative half cycle to complete the pre-biasing for TENG’s positive half cycle, which realizes the output of TENG per cycle beyond the CMEO limit. The simulation results show that the output energy per cycle of this strategy is 1.74 times that of CMEO.