Journal
NANO ENERGY
Volume 66, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2019.104117
Keywords
High performance; Triboelectric nanogenerator; Water quality mapping; Blue energy; Self-powered
Categories
Funding
- National Key RAMP
- D Project from Minister of Science and Technology, China [2016YFA0202704]
- National Natural Science Foundation of China [51605033, 51735001, 51432005, 5151101243, 51561145021]
- China Postdoctoral Science Foundation [2015M581041]
- Beijing Municipal Science and Technology Commission [Z171100002017017, Y3993113DF]
- Youth Innovation Promotion Association, CAS
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Water pollution is one of the most severe environmental issues nowadays. For sustainably and autonomously monitoring water quality, in-situ self-powered sensing systems which can harvest local wave energy are highly desired. Here, a high-performance tandem disk triboelectric nanogenerator (TD-TENG) for self-powered water quality monitoring is demonstrated. By surface modification and optimized design, a radial grating structure which can be effectively agitated by slow water waves is realized, boosting the peak and average power of waveenergy-harvesting TENG devices to 45.0 mW and 7.5 mW respectively, which are roughly 35 and 24 folds of the typical ball-shell structured device. The average power density reaches 7.3 W m(-3), setting up a new record. The short-circuit current is greatly enhanced to 11 mA through a facile power management circuit. The high output enables a self-powered total dissolved solids testing system, which can be scaled up into networks for in-situ, real-time mapping water quality in a large area. The TD-TENG as a high-power wave energy harvesting device also opens up an avenue to solve the bottleneck of power supply for versatile sensing platforms that need to work autonomously in water, providing a fundamental technology for smart environmental and ocean science.
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