期刊
NANO ENERGY
卷 20, 期 -, 页码 233-243出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2015.11.037
关键词
Energy conversion; Mini-generator; Smart device; Diving-surfacing motion; pH-responsive
类别
资金
- National Natural Science Foundation of China [51422302, 51125007]
- Program of the Co-Construction with Beijing Municipal Commission of Education, China
- State Key Laboratory of Supramolecular Structure and Materials [SKLSSM2015017]
- Beijing Young Talents Plan [YETP0488]
Energy conversion from chemical to mechanical forms and then to electricity has experienced an explosive development in recent years. However, most of the current studies are challenged by producing a high output of induced current through cutting the strong magnetic line with a conductive line. Herein, we designed and fabricated a mini-generator to perform a diving-surfacing cycled motion with an intelligent initiation based on pH-responsive materials, and the obtained mechanical energy can be converted into electricity through cutting the strong magnetic line with a conductive line. Under acidic conditions, the device floated on the surface of water, and its locomotion was switched on through the addition of a basic solution. The re-float process was initiated by adding an acid solution and hydrogen peroxide. By investigating the influencing factors of the smart motion, we found that the device that consisted of one pH-responsive part, one hydrophobic part and a quartz cell performed the best under a 0.9% concentration of hydrogen peroxide during the diving-surfacing motion with a high frequency, leading to the highest output of induced current. Moreover, the device with bilateral-pyramidic structure provided the highest diving surfacing frequency and maximized vertical motion velocity because of its drag-reducing property, achieving the highest output of induced electromotive force. (C) 2015 Elsevier Ltd. All rights reserved.
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