Sustainable and pliable microbrush-based triboelectric nanogenerators for directly powering healthcare monitoring devices
발표자
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초록
내용
Recently, state-of-the-art triboelectric nanogenerators (TENGs) based on contact electrification have emerged as self-powered energy harvesters, utilizing diverse materials and structures. Here, we present highly sustainable microbrush-based TENGs consisting of tightly bundled fibrous polymers that possess excellent durability even under repeated friction environments (i.e., repetitive motion over 3000 times). Among the structural and operational approaches, the easily accessed hand-tapping for operating TENGs generated a voltage of up to ~1.6 kV with a peak power density of ~76.7 mW. Moreover, several types of mechanical energies by human motion were successfully stored in supercapacitors and demonstrated for power electronic devices, including a smartwatch, body-attachable electromyography (EMG), and lighting up 100 LEDs. Our newly developed scheme of TENG devices can be extended to simple applications such as brushing clothes, walking, and even combing hair energy generation.