Journal
ACS NANO
Volume 10, Issue 6, Pages 5696-5700Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.6b02575
Keywords
triboelectric nanogenerator; solar cells; smart city; hybridized nanogenerator; Li-ion battery; self-powered
Categories
Funding
- Beijing Natural Science Foundation [2154059]
- National Natural Science Foundation of China [51472055, 61404034]
- External Cooperation Program of BIC, Chinese Academy of Sciences [121411KYS820150028]
- Annual Beijing Talents Fund [2015000021223M2]
- Thousands Talents Program for the Pioneer Researcher and His Innovation Team, China
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To realize the sustainable energy supply in a smart city, it is essential to maximize energy scavenging from the city environments for achieving the self-powered functions of some intelligent devices and sensors. Although the solar energy can be well harvested by using existing technologies, the large amounts of wasted wind energy in the city cannot be effectively utilized since conventional wind turbine generators can only be installed in remote areas due to their large volumes and safety issues. Here, we rationally design a hybridized nanogenerator, including a solar cell (SC) and a triboelectric nanogenerator (TENG), that can individually/simultaneously scavenge solar and wind energies, which can be extensively installed on the roofs of the city buildings. Under the same device area of about 120 mm X 22 mm, the SC can deliver a largest output power of about 8 mW, while the output power of the TENG can be up to 26 mW. Impedance matching between the SC and TENG has been achieved by using a transformer to decrease the impedance of the TENG. The hybridized nanogenerator has a larger output current and a better charging performance than that of the individual SC or TENG. This research presents a feasible approach to maximize solar and wind energies scavenging from the city environments with the aim to realize some self-powered functions in smart city.
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