期刊
NANO RESEARCH
卷 8, 期 10, 页码 3272-3280出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-015-0827-6
关键词
hybrid nanogenerator; triboelectric; electromagnetic; Li-ion battery; vibration energy
类别
资金
- Beijing Natural Science Foundation [2154059]
- National Natural Science Foundation of China [51472055, 61404034]
- Thousands Talents program for pioneer researcher and his innovation team, China
We report a hybrid nanogenerator that includes a triboelectric nanogenerator (TENG) and an electromagnetic generator (EMG) for scavenging mechanical energy. This nanogenerator operates in a hybrid mode using both the triboelectric and electromagnetic induction effects. Under a vibration frequency of 14 Hz, the fabricated TENG can deliver an open-circuit voltage of about 84 V, a short-circuit current of 43 A mu A, and a maximum power of 1.2 mW (the corresponding power per unit mass and volume are 1.82 mW/g and 3.4 W/m(3), respectively) under a loading resistance of 2 M Omega, whereas the fabricated EMG can produce an opencircuit voltage of about 9.9 V, a short-circuit current of 7 mA, and a maximum power of 17.4 mW (the corresponding power per unit mass and volume are 0.53 mW/g and 3.7 W/m(3), respectively) under a loading resistance of 2 k Omega. Impedance matching between the TENG and EMG can be achieved using a transformer to decrease the impedance of the TENG. Moreover, the energy produced by the hybrid nanogenerator can be stored in a home-made Li-ion battery. This research represents important progress toward practical applications of vibration energy generation for realizing self-charging power cells.
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