期刊
ACS NANO
卷 8, 期 1, 页码 680-689出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn4053292
关键词
triboelectric nanogenerator; asymmetric; rotational energy; self-powered wind speed sensor
类别
资金
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-FG02-07ER46394]
- Knowledge Innovation Program of the Chinese Academy of Sciences [KJCX2-YW-M13]
- Thousands Talents program for pioneer researcher and his innovation team, China
- NSFCQ [cstc2012jjB0006]
- SRFDP [20110191110034]
- Innovative Talent Funds for 985 Project of Chongqing University [WLYJSBJRCTD201101]
- China Scholarship Council (CSC)
Rotational energy is abundant and widely available in our living environment Harvesting ambient rotational energy has attracted great attention. In this work, we report a single-electrode-based rotating triboelectric nanogenerator (SR-TENG) for converting rotational energy into electric energy. The unique advantage of introducing the single-electrode TENG is to overcome the difficulty in making the connection in harvesting rotational energy such as from a moving and rotating tire/wheel. The fabricated device consists of a rotary acrylic disc with polytetrafluoroethylene (PTFE) blades and an Al electrode fixed on the base. The systematical experiments and theoretical simulations indicate that the asymmetric SR-TENGs exhibit much better output performances than those of the symmetric TENGs at the same rotation rates. The asymmetric SR-TENG with seven PTFE units at the rotation rate of 800 r/min can deliver a maximal output voltage of 55 V and a corresponding output power of 30 mu W on a load of 100 M Omega, which can directly light up tens of red light-emitting diodes. The SR-TENG has been utilized to harvest mechanical energy from rotational motion of a bicycle wheel. Furthermore, we demonstrated that the SR-TENG can be applied to scavenge wind energy and as a self-powered wind speed sensor with a sensitivity of about 0.83 V/(m/s). This study further expands the operation principle of a single-electrode-based TENG and many potential applications of TENGs for scavenging ambient rotational energy and as a self-powered environment monitoring sensor.
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