期刊
NANO LETTERS
卷 13, 期 5, 页码 2282-2289出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl4008985
关键词
Electrification; triboelectric generator; sliding; energy harvesting
类别
资金
- Airforce, U.S. Department of Energy, Office of Basic Energy Sciences [DE-FG02-07ER46394]
- NSF [0946418]
- Knowledge Innovation Program of the Chinese Academy of Science [KJCX2-YW-M13]
- U.S. Department of Energy (DOE) [DE-FG02-07ER46394] Funding Source: U.S. Department of Energy (DOE)
The triboelectric effect is known for many centuries and it is the cause of many charging phenomena. However, it has not been utilized for energy harvesting until very recently.(1-5) Here we developed a new principle of triboelectric generator (TEG) based on a fully contacted, sliding electrification process, which lays a fundamentally new mechanism for designing universal, high-performance TEGs to harvest diverse forms of mechanical energy in our daily life. Relative displacement between two sliding surfaces of opposite triboelectric polarities generates uncompensated surface triboelectric charges; the corresponding polarization created a voltage drop that results in a flow of induced electrons between electrodes. Grating of linear rows on the sliding surfaces enables substantial enhancements of total charges, output current, and current frequency. The TEG was demonstrated to be an efficient power source for simultaneously driving a number of small electronics. The principle established in this work can be applied to TEGs of different configurations that accommodate the needs of harvesting energy and/or sensing from diverse mechanical motions, such as contacted sliding, lateral translation, and rotation/rolling.
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