Paper can power electric drive and batteries to store energy from the sun and wind
Monday, March 1st, 2010"Imagination often carry us to worlds that never were. But without it we go nowhere," Carl Sagan.
With just one photo of a special black ink on standard copy paper, scientists have recently found a way, a battery of paper that could provide the technological landscape transformed.
The potential of the stack of paper is limited only by our imagination. These inexpensive, lightweight batteries can be used to the sun's energy for use on days when the sun does not seem to save moneyand energy of the wind during the day, if not shot. Can also be used to store electricity late at night when it is cheap, and provide them at peak times when it is expensive and scarce.
Perhaps most exciting are their potential applications in the transport sector. Since the current cost of batteries for hybrid and electric cars is very high and their capacity is limited, the paper batteries could be the answer that produces electric cars have beenhave. In the distant future, paper, battery-powered planes and boats are also a possibility, and these devices will certainly be many interesting applications in aerospace.
Because of their biocompatibility of these batteries can also read the power devices in the bodies of humans and animals, including pacemakers, RFID tags and systems for drug delivery. It can also be very useful for portable consumer electronic devices, and a day before couldalso receive a package with wrapping paper, lights that "magic Happy Birthday!"
The key to the development of the paper batteries are carbon nanotubes to give the ink its color black. Through nanotechnology, scientists are able to manipulate matter at the molecular level and highly conductive carbon nanotubes, have created them, are extremely thin cylinder with a diameter of about 1 / 50, 000th that of a human hair.
In the nano-level paper consists of a tangled arraycellulose fibers. These highly porous fibers serve as the ideal setting for a network of carbon nanotubes and nanowires of silver, which are absorbed by the black ink. After the addition of an electrolyte solution on paper and drying, the result of an ultrathin, completely flexible storage device that can be folded, rolled, twisted or bent without loss of integrity and efficiency. The flexibility of these bacteria in the form of any device can be designed to be shaped toPower. In order to reduce their storage capacity, the card can be easily cut. To increase the total production, a few sheets of conductive paper can be stacked on one another.
Unlike alkaline batteries, which consist of several separate parts are the components of a battery of paper is fully integrated at the molecular level, resulting in a durable device that can actually much faster than a lithium battery capable, and its charge of many years to maintain. You may also be charged tens of thousandsthousands of times.
Paper batteries can serve both as a high-energy battery and a supercapacitor. This combination, which is divided into traditional electronic devices, may require long-term balance of power and the battery production and rapid series of shots with high energy to start the engines.
Batteries that power our flashlights, computers, mobile phones and toys are a major source of pollution. According to the Hamilton Institute, there are 15 billionBatteries in landfills around the world. When the battery casing corrodes highly toxic heavy metals such as mercury and cadmium can leak and pollute groundwater and soil. Biodegradable, nontoxic paper batteries do not help this problem.
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