Self-powered versatile shoes based on hybrid nanogenerators
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A triboelectric nanogenerator (TENG) and an electromagnetic generator (EMG) were hybridized to harvest the human mechanical energy. By an effective conjunction of triboelectrification and electromagnetic induction, the hybridized nanogenerator with a radius of 2 cm and height of 1.2 cm could charge a 1,000 μF capacitor to 5.09 V after 100 cycles of vibration. This mini-sized hybrid nanogenerator could then be embedded in shoes to serve as an energy cell. Typical outdoor applications—including driving with a Global Positioning System (GPS) device, charging a Li-ion battery and a cell phone—were successfully demonstrated, suggesting its potential application in smart wearable electronics and future suits of soldiers.
Keywordstriboelectric nanogenerators electromagnetic generators hybrid nanogenerators
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L. L., W. T., and C. R. D. contributed equally to this work. The authors acknowledge the support from the National Key R & D Project from Ministry of Science and Technology (No. 2016YFA0202704), National Natural Science Foundation of China (Nos. 51432005, 5151101243, and 51561145021), Beijing Municipal Science & Technology Commission (No. Y3993113DF), the “Thousands Talents” program for pioneer researcher, and their innovation team in China.