Self‐Powered High‐Voltage Recharging System for Removing Noxious Tobacco Smoke by Biomimetic Hairy‐Contact Triboelectric Nanogenerator

Abstract The most common size range of particulate matter (PM) in tobacco smoke is 1.0 to 5.0 microns; however, a high number of the most harmful PM is as small as 0.5 micron that is a serious threat to human health, and it is difficult to remove. There is an urgent need to develop a new purification technology for high‐efficiency removing tobacco smoke with easily construction and low cost. Here, a method of self‐powered high‐voltage recharging system is demonstrated by designing biomimetic hairy‐contact triboelectric nanogenerator (BHC‐TENG) for long‐lasting adsorption with a wide range from PM 0.5 to PM 10. The open‐circuit voltage of BHC‐TENGs reaches 8.42 KV, which can continuously charge injection to the melt‐blown fabric, whose surface potential is able to maintain nearly 260 V level and create a uniform electrostatic adsorption field on the surface. This high‐voltage recharging system reduces the concentration of PMs to World Health Organization (WHO) standards, maintaining the purification efficiency of PM 0.5– PM 10 persistently over 90%.