Wang Haiyan, Sun Yilin, He Tiancheng, Huang Yaxin, Cheng Huhu, Li Chun, Xie Dan, Yang Pengfei, Zhang Yanfeng, Qu Liangti
Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry and State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing, P. R. China.
Institute of Microelectronics, Beijing National Research Center for Information Science and Technology, Tsinghua University, Beijing, P. R. China.
Nat Nanotechnol. 2021 Jul;16(7):811-819. doi: 10.1038/s41565-021-00903-6. Epub 2021 Apr 26.
Environmentally adaptive power generation is attractive for the development of next-generation energy sources. Here we develop a heterogeneous moisture-enabled electric generator (HMEG) based on a bilayer of polyelectrolyte films. Through the spontaneous adsorption of water molecules in air and induced diffusion of oppositely charged ions, one single HMEG unit can produce a high voltage of ~0.95 V at low (25%) relative humidity (RH), and even jump to 1.38 V at 85% RH. A sequentially aligned stacking strategy is created for large-scale integration of HMEG units, to offer a voltage of more than 1,000 V under ambient conditions (25% RH, 25 °C). Using origami assembly, a small section of folded HMEGs renders an output of up to 43 V cm. Such integration devices supply sufficient power to illuminate a lamp bulb of 10 W, to drive a dynamic electronic ink screen and to control the gate voltage for a self-powered field effect transistor.
环境自适应发电对于下一代能源的发展具有吸引力。在此，我们基于双层聚电解质膜开发了一种异质水分驱动发电机（HMEG）。通过空气中水分子的自发吸附以及相反电荷离子的诱导扩散，单个HMEG单元在低（25%）相对湿度（RH）下可产生约0.95 V的高电压，在85% RH时甚至跃升至1.38 V。为了实现HMEG单元的大规模集成，创建了一种顺序排列堆叠策略，以便在环境条件（25% RH，25°C）下提供超过1000 V的电压。使用折纸组装，一小部分折叠的HMEG可产生高达43 V/cm的输出。这种集成装置提供足够的电力来点亮一个10 W的灯泡、驱动一个动态电子墨水屏幕以及控制自供电场效应晶体管的栅极电压。
