MnO Nanowires with Sub-10 nm Thick Conjugated Microporous Polymers as Synergistic Triboelectric Materials.

MnO nanowires coated with conjugated microporous polymers (CMP) are applied as triboelectric energy harvesting materials. The tribopositive performance of the CMP shells is enhanced with the assistance of MnO nanowires (MnO NW), likely due to cationic charge transfer from the tribopositive CMP layers to the surface Mn and Mn species of MnO NW. This is supported by model studies. The MnO@CMP-2 with sub-10 nm thick CMP layers shows promising triboelectric output voltages up to 576 V and a maximum power density of 1.31 mW cm. Spring-assisted triboelectric nanogenerators fabricated with MnO@CMP-2/PVP-3 films are used as power supplies to operate electronic devices.