a micro-current electrolysis includes a group of electrodes set in the tank in accordance with the order of anode, auxiliary electrode, and cathode which are made of MMO-Ti plates. The effective volume of the device is 1 L. ter transformed and rectified, the fabricated TENGs presented above were connected to the device through external electrodes. This is the first demonstration of the TENGs for directly driving a commercial micro-current electrolysis device for steriliza tion and algae removal, which extends the application fields of the nanogenerator and drives it closer to practical applications