期刊
NANO LETTERS
卷 13, 期 2, 页码 847-853出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl4001053
关键词
Triboelectric nanogenerator; large-scale; nanoparticle; wind power; ocean wave
类别
资金
- Airforce, MURI, U.S. Department of Energy, Office of Basic Energy Sciences [DE-FG02-07ER46394]
- NSF [CMMI 0403671]
- National Institute For Materials, Japan
- Knowledge Innovation Program of the Chinese Academy of Sciences [KJCX2-YW-M13]
- [NSC 101-2917-I-564-029]
This article describes a simple, cost-effective, and scalable approach to fabricate a triboelectric nanogenerator (NG) with ultrahigh electric output. Triggered by commonly available ambient mechanical energy such as human footfalls, a NG with size smaller than a human palm can generate maximum short-circuit current of 2 mA, delivering instantaneous power output of 1.2 W to external load. The power output corresponds to an area power density of 313 W/m(2) and a volume power density of 54 268 W/m(3) at an open-circuit voltage of similar to 1200 V. An energy conversion efficiency of 14.9% has been achieved. The power was capable of instantaneously lighting up as many as 600 multicolor commercial LED bulbs. The record high power output for the NG is attributed to optimized structure, proper materials selection and nanoscale surface modification. This work demonstrated the practicability of using NG to harvest large-scale mechanical energy, such as footsteps, rolling wheels, wind power, and ocean waves.
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