Journal
NANO LETTERS
Volume 12, Issue 12, Pages 6339-6346Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl303573d
Keywords
Energy harvesting; triboelectric nanogenerator; self-powered system; lithium ion battery
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Funding
- DARPA [HR0011-09-C-0142]
- Airforce, U.S. Department of Energy, Office of Basic Energy Sciences [DEFG02- 07ER46394]
- NSF [CMMI 0403671]
- Knowledge Innovation Program of the Chinese Academy of Sciences [KJCX2-YW-M13]
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Harvesting energy from our living environment is an effective approach for sustainable, maintenance-free, and green power source for wireless, portable, or implanted electronics. Mechanical energy scavenging based on triboelectric effect has been proven to be simple, cost-effective, and robust. However, its output is still insufficient for sustainably driving electronic devices/systems. Here, we demonstrated a rationally designed arch-shaped triboelectric nanogenerator (TENG) by utilizing the contact electrification between a polymer thin film and a metal thin foil. The working mechanism of the TENG was studied by finite element simulation. The output voltage, current density, and energy volume density reached 230 V, 15.5 mu A/cm(2), and 128 mW/cm(3), respectively, and an energy conversion efficiency as high as 10-39% has been demonstrated. The TENG was systematically studied and demonstrated as a sustainable power source that can not only drive instantaneous operation of light-emitting diodes (LEDs) but also charge a lithium ion battery as a regulated power module for powering a wireless sensor system and a commercial cell phone, which is the first demonstration of the nanogenerator for driving personal mobile electronics, opening the chapter of impacting general people's life by nanogenerators.
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