Charge‐Accumulating‐Flutter‐Based Triboelectric Nanogenerator via Discharge Gateway
Deokjae Heo, Jin-Ho Son, Dongchang Kim, Dongchang Kim, Myunghwan Song, Hanwook Ryu, Sunghan Kim, Kyungwho Choi, Zong‐Hong Lin, Dongseob Kim, Dongseob Kim, Jinkee Hong, Sangmin Lee
Abstract
Abstract For triboelectric nanogenerators (TENGs), achieving both high root‐mean‐square (RMS) current output and portability remains a challenge. Here, a charge‐accumulating‐flutter‐based triboelectric nanogenerator (CAF‐TENG) with ultrahigh RMS current and average power density/portability is proposed. Because of the electron accumulation/discharge mechanism and electrical/mechanical flutter device design, the CAF‐TENG can generate an RMS voltage, RMS current, and average power density of 44 V, 36 mA, and 26 mW cm −3 , respectively. The CAF‐TENG is optimized via quantitative electrical/mechanical analysis. CAF‐TENG can power an array of 2000 commercial LEDs continuously and charge high‐capacitance capacitors/commercial lithium batteries. Furthermore, as a practical application, a mask‐valve‐integrated CAF‐TENG is fabricated, which can power eight commercial lamps (5 W) continuously and operate a commercial Bluetooth tracker by charging a capacitor in a daily respiration scenario.