RT Journal Article A1 Guoqiang Xu,Jingjing Fu,Chuanyang Li,Juntong Xing,Chaojie Chen,Wei-Hsin Liao,Zhonglin Wang,Yunlong Zi; AD Department of Mechanical and Automation Engineering, 中国 ; Department of Mechanical and Automation Engineering, 中国 ; Department of Mechanical and Automation Engineering, 中国 ; Department of Mechanical and Automation Engineering, 中国 ; Department of Mechanical and Automation Engineering, 中国 ; Department of Mechanical and Automation Engineering, 中国 ; 北京纳米能源与纳米系统研究所, 中国 ; Department of Mechanical and Automation Engineering, 中国 ; 北京纳米能源与纳米系统研究所, 中国 ; 机械及航空航天工程系, 中国 ; 香港科技大学深港协同创新研究院, 中国 ; 深圳研究院, 中国 ; 可持续能源与环境的推动力, 中国 T1 A nonlinear triboelectric nanogenerator with a broadened bandwidth for effective harvesting of vibration energy YR 2022 IS 2 vo 1 OP 236-OP 242 K1 triboelectric nanogenerator;energy harvester;Nonlinear oscillator;electromechanical coupling model;dynamic performance;mechanical vibration AB A narrow resonance bandwidth of an energy harvesters limits its response to the wide frequency spectrum in ambient environments. This work proposes an addition of a nonlinear restoring force applied to a triboelectric nanogenerator (TENG) to tune and broaden the resonance bandwidth. This restoring force is applied by permanent magnets at both sides of the slider and two external magnets. The noncontact strategy is adopted between the slider and the grating electrodes to avoid the wear of electrodes and energy loss caused by friction. The results show that compared with the linear system, the nonlinear noncontact TENG (NN-TENG) can increase the peak current from 6.3 μA to 7.89 μA, with an increment of about 25%, increase the peak power from 650 μW to 977 μW, increasing by about 50%, and increase the bandwidth from 0.5 Hz to 7.75 Hz, increasing by about1400%. This work may enable a new strategy to boost the bandwidth and output power of TENG through nonlinear oscillators. SN LA EN