期刊
NANO ENERGY
卷 38, 期 -, 页码 101-108出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2017.04.053
关键词
TENG; Underwater energy; Ultrasonic wave; High efficient
类别
资金
- thousands talents program for pioneer researcher and his innovation team, China
- National Key R D Project [2016YFA0202704, 2016YFA0202702]
- National Natural Science Foundation of China [51432005, 5151101243, 51561145021]
- NSFCQ [cstc2014jcyjA50030]
- Chinese Scholars Council
Ultrasonic waves are existing in water and in our living environment, but harvesting the sonic wave energy especially in water is rather challenging, simply because of the high pressure generated by water. In this work, a triboelectric nanogenerator (TENG) has been designed using spherical pellets as the media for performing the contact-separation operation during ultrasonic wave excitation for energy harvesting. The fabricated TENG can attain an instantaneous output current from several milliamps to about one hundred milliamps and achieve an output power of 0.362 W/cm(2) at an ultrasonic wave frequency of 80 kHz. The average power conversion efficiency of the TENG has reached 13.1%. The equivalent output galvanostatic current is 1.43 mA, which is the highest value reported so far. The developed TENG pellets has been demonstrated to continuously power up to 12 lamps with 0.75 W each, and can continuously drive a temperature-humidity meter, an electronic watch, and directly drive a health monitor. This study presents the outstanding potential of TENG for underwater applications.
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