All-Printed Porous Carbon Film for Electricity Generation from Evaporation-Driven Water Flow

作者：Ding, Tianpeng; Liu, Kang; Li, Jia; Xue, Guobin; Chen, Qian; Huang, Liang; Hu, Bin; Zhou, Jun^*

来源：Advanced Functional Materials, 2017, 27(22): 1700551.

DOI：10.1002/adfm.201700551

• capillary flow
• energy harvesting
• evaporation
• porous carbon film
• self-powered

Converting environmental "waste energies" into electricity via a natural process is an ideal strategy for environmental energy harvesting and supplying power for distributed energy-consuming devices. This paper reports that evaporation-driven water flow within an all-printed porous carbon film can reliably generate sustainable voltage up to 1 V with a power density of approximate to 8.1 mu W cm(-3) under ambient conditions. The output performance of the device can be easily scaled up and used to power low-power consumption electronic devices or for energy storage. Furthermore, the device is successfully used without electric storage as a direct power source for electrodeposition of silver microstructures. Because of the ubiquity of water evaporation in nature and the low cost of materials involved, the study presents a novel avenue to harvest ambient energy and has potential applications in low-cost, green, self-powered devices and systems.

• 出版日期2017-6-13
• 单位华中科技大学