摩擦电效应
接触带电
电气化
电
纳米发生器
材料科学
电容器
静电感应
瓶颈
发电机(电路理论)
电气工程
电压
光电子学
功率(物理)
计算机科学
电极
物理
工程类
复合材料
嵌入式系统
量子力学
作者
Qi Zhang,Yahui Li,Han Cai,Mingfang Yao,Haodong Zhang,Linqi Guo,Zhenjie Lv,Mengqiu Li,Xichi Lu,Chao Ren,Penglei Zhang,Yanxin Zhang,Xian Shi,Guifu Ding,Jinyuan Yao,Zhuoqing Yang,Zhong Lin Wang
标识
DOI:10.1002/adma.202105761
摘要
The working principle of the triboelectric nanogenerator (TENG), contact electrification and electrostatic induction, has been used to harvest raindrop energy in recent years. However, the existing research is mainly concentrated on solid-liquid electrification, and adopts traditional electrostatic induction (TEI) for output. As a result, the efficiency of droplet electricity generators (DEGs) is severely constrained. Therefore, previous studies deem that the DEG output is limited by interfacial effects. This study reveals that this view is inappropriate and, in reality, the output strategy is the key bottleneck restricting the DEG performance. Here, a switch effect based on an electric-double-layer capacitor (EDLC) is introduced, and an equivalent circuit model is established to understand its working mechanism. Without pre-charging, a single droplet can generate high voltage over 100 V and the output is directly improved by two-orders of magnitude compared with TEI, which is precisely utilizing the interfacial effect. This work provides insightful perspective and lays solid foundation for DEG applications in large scale.
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