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T-shirts could soon charge electronic gadgets - Electrode Drying Oven - Welding Cable Connector by grass lawn
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T-shirts could soon charge electronic gadgets - Electrode Drying Oven - Welding Cable Connector by GRASS LAWN
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| Article Posted: 08/13/2013 |
| Article Views: 60 |
| Articles Written: 975 - MORE ARTICLES FROM THIS AUTHOR |
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T-shirts could soon charge electronic gadgets - Electrode Drying Oven - Welding Cable Connector |
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Business,Business News,Business Opportunities
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Mechanical engineers are working on how to turn the material in acotton T-shirt into a source of electrical power. Xiaodong Li, from the University of South Carolina, envisionsintegration of the cell phone and just about every electronicgadget into our lives. In fact, Li sees a future where electronics are part of ourwardrobe. "We wear fabric every day," Li said.
"One day our cotton T-shirts could have more functions; forexample, a flexible energy storage device that could charge yourcell phone or your iPad," he said. Starting with a T-shirt from a local discount store, Li's teamsoaked it in a solution of fluoride, dried it and baked it at hightemperature. They excluded oxygen in the oven to prevent thematerial from charring or simply combusting. The surfaces of the resulting fibres in the fabric were shown byinfrared spectroscopy to have been converted from cellulose toactivated carbon.
Yet the material retained flexibility and couldbe folded without breaking. "We will soon see roll-up cell phones and laptop computers on themarket," Li said. But a flexible energy storage device is needed tomake this possible," he said. The once-cotton T-shirt proved to be a repository for electricity.By using small swatches of the fabric as an electrode, theresearchers showed that the flexible material, which Li's teamterms activated carbon textile, acts as a capacitor.
Capacitors are components of nearly every electronic device on themarket, and they have the ability to store electrical charge. Moreover, Li reports that activated carbon textile acts likedouble-layer capacitors, which are also called a supercapacitorsbecause they can have particularly high energy storage densities. But Li and Bao took the material even further than that. They thencoated the individual fibres in the activated carbon textile with'nanoflowers' of manganese oxide. Just a nanometer thick, this layer of manganese oxide greatlyenhanced the electrode performance of the fabric.
"This created a stable, high-performing supercapacitor," Li said. This hybrid fabric, in which the activated carbon textile fibresare coated with nanostructured manganese oxide, improved the energystorage capability beyond the activated carbon textile alone. The hybrid supercapacitors were resilient even after thousands ofcharge-discharge cycles, performance didn't diminish more than 5percent. "By stacking these supercapacitors up, we should be able to chargeportable electronic devices such as cell phones," Li added. The study has been published in the journal Advanced Materials.
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