Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 25, Issue 24, Pages 3688-3696Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201500428
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Funding
- National Natural Science Foundation of China [51432005]
- Beijing City Committee of Science and Technology [Z131100006013004, Z131100006013005]
- Major Project of International Cooperation and Exchanges [2012DFA50990]
- Programme of Introducing Talents of Discipline to Universities [B14003]
- National Major Research Program of China [2013CB932602]
- China Scholarship Council (CSC)
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A stretchable-rubber-based (SR-based) triboelectric nanogenerator (TENG) is developed that can not only harvest energy but also serve as self-powered multifunctional sensors. It consists of a layer of elastic rubber and a layer of aluminum film that acts as the electrode. By stretching and releasing the rubber, the changes of triboelectric charge distribution/density on the rubber surface relative to the aluminum surface induce alterations to the electrical potential of the aluminum electrode, leading to an alternating charge flow between the aluminum electrode and the ground. The unique working principle of the SR-based TENG is verified by the coupling of numerical calculations and experimental measurements. A comprehensive study is carried out to investigate the factors that may influence the output performance of the SR-based TENG. By integrating the devices into a sensor system, it is capable of detecting movements in different directions. Moreover, the SR-based TENG can be attached to a human body to detect diaphragm breathing and joint motion. This work largely expands the applications of TENG not only as effective power sources but also as active sensors; and opens up a new prospect in future electronics.
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