The triboelectric nanogenerators (TENGs) are facing great challenges of high power and long life in practical applications, owing to low charge density, easy wear material, etc. Trying to address those limitations, a new operation method of decoupled charge pump for TENG along with the discharge tube is proposed to thousandfold improve its instantaneous peak current. The pump and main TENGs optimally adopt the freestanding mode and contact-separation mode, respectively, and their motions are decoupled. When the capacitance of the main TENG as a variable capacitor reaches the peak value, there is the maximum charge generation from pump TENG and charge injection into main TENG. With the integration of discharge tube, the output current has an above 1000 folds increasement and the power density is calculated to 21.25 W/m2. A charge density of 628.7 μC m？2 is achieved. This work provides a new mode of charge pump with intermittent operation for enormously boosting the output current of TENGs, promoting its practical applications.
Article link: https://doi.org/10.1016/j.nanoen.2022.107264
Home 
Address
E-Mail
Telephone