Title : Thermoelectric Power Generators based on Nanocarbonic Materials
Speaker : Prof. Siegmar Roth (School of Electrical Engineering of Korea University (WCU on Flexible Nanosystem))
Date & Time : 2012. 3. 28. 수요일 17:00
Where : 융대원 D-123
Abstract
If you heat a thermoelectric material on one end and cool the other end, you can pick up a voltage between the two ends. This is the Seebeck effect. Materials for thermoelectric power generators should have a large Seebeck coefficient, large electrical conductivity and low thermal conductivity. It turns out that networks of carbon nanomaterials fulfill these requirements pretty well.
Fig. 1 shows a very simple experiment to measure the thermoelectric effect. Everybody can set it up in half an hour in his lab: Buckypaper, a free standing network of carbon nanotubes, is clamped between two alligator clips connected to a voltmeter. One side of the buckypaper is heated with a soldering iron. The temperature is measured with platinum resistors behind the alligator clips (not visible at the photograph).
Fig. 2 shows a stack of several thin buckypapers and plastic films between, so that the thermoelectric generators are wired in series and the thermovoltages add. After some further development such devices could be used to charge the batteries of mobile phones. In the long term it is hoped that nanotube networks are incorporated in construction materials of houses so that the temperature difference between inside and outside can be used for electric power generation.
※ 자세한 내용은 첨부문서를 참고해 주시기 바랍니다.
