▷ 제목: Pioneering Coulombic Materials: Innovations for Energy and Environmental Solutions

▷ 내용: Enhancing energy conversion efficiency and developing sustainable environmental solutions are critical challenges in modern technology. This study presents a novel charge-engineered approach that improves thermoelectric generator (TEG) performance through ferroelectric and dielectric effects while enabling a self-powered nanoplastic filtration system. By integrating poled ferroelectric ceramics (PNN-PZT, PMN-PT) and highly charged polyimide-based dielectrics into TEGs, we significantly enhance output performance without modifying thermoelectric materials. Additionally, an electrostatic nanoplastic filtration system, powered by a rotation-mode triboelectric nanogenerator (TENG), ensures energy-efficient environmental remediation. These synergistic strategies provide scalable solutions for energy harvesting and sustainability applications.

The introduction of a poled ferroelectric ceramic (PNN-PZT) at the cold zone of a Cu/p-type BiSbTe/Au/Cr/SiO₂/Si TEG increased the output voltage to 8.3 mV under a 25 K temperature difference, maintaining stability for over 5 weeks. Replacing PNN-PZT with PMN-PT further enhanced the voltage to 11.1 mV, with a peak output power of 22.3 μW at 1.2 Ω load resistance. A 16-leg TEG fully charged a 10 mF capacitor within 30 seconds, enabling thermoelectric cooling (TEC) with a 1.8× faster cooling rate. Meanwhile, a porous MgO-coated Ni metallic filter achieved 99.12% nanoplastic removal efficiency for 50 nm particles at high flow rates. A rotation-mode TENG provided self-sustained operation while maintaining filtration efficiency above 96% for 20 cycles. These results demonstrate a promising charge-based strategy for enhancing thermoelectric performance and achieving sustainable environmental applications.

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