Chen Huilin, Hu Baoshan, Li Qianying, Ding Yanhong, Yang Huake, Li Xiaochuan, Yang Qianxi, Xi Yi
ACS Appl Mater Interfaces. 2024 Aug 28;16(34):44655-44664. doi: 10.1021/acsami.4c05946. Epub 2024 Aug 16.
The energy conversion efficiency of conventional binary dielectric triboelectric nanogenerators is not satisfactory due to the limitations of material selection and triboelectrification, which motivates the design of more efficient multicomponent structures to reveal the charge accumulation mechanism for improving the energy conversion efficiency. Herein, a rotating quaternary dielectric triboelectric nanogenerator (Q-TENG) is designed to construct a self-powered system integrating illumination, sensing, and electrochemical decolorization. Through the equivalent capacitance model, the mechanisms for charge generation, transfer, and accumulation in a Q-TENG are elucidated to achieve efficient matching of quaternary dielectric materials and high output performance. At a wind speed of 3.5 m s, the peak power density of the Q-TENG reaches 44.94 W m, setting a new record for a wind-driven TENG. A 5 ppm solution of methyl orange is completely degraded by the wind-driven Q-TENG in <6 h. This work not only guides the direction for constructing more efficient TENG systems but also promotes the practical development of self-powered electrochemical systems.
由于材料选择和摩擦起电的限制，传统二元介电摩擦纳米发电机的能量转换效率并不理想，这促使人们设计更高效的多组分结构，以揭示电荷积累机制来提高能量转换效率。在此，设计了一种旋转四元介电摩擦纳米发电机（Q-TENG），以构建一个集成照明、传感和电化学脱色的自供电系统。通过等效电容模型，阐明了Q-TENG中电荷产生、转移和积累的机制，以实现四元介电材料的有效匹配和高输出性能。在风速为3.5米/秒时，Q-TENG的峰值功率密度达到44.94瓦/平方米，创造了风力驱动摩擦纳米发电机的新纪录。在不到6小时的时间内，风力驱动的Q-TENG可将5 ppm的甲基橙溶液完全降解。这项工作不仅为构建更高效的摩擦纳米发电机系统指明了方向，还推动了自供电电化学系统的实际发展。
