As this ScienCentral News video explains, researchers at the Massachusetts Institute of Technology are developing a battery that could do just that, and also might never need to be replaced.
The Past is Future
As our portable devices get more high-tech, the batteries that power them can seem to lag behind. But and his team at plan to make long charge times and expensive replacements a thing of the past--by improving on technology from the past d5318,u4873,dell inspiron 6000 battery.
They turned to the , which was invented nearly 300 years ago.Sony VGP-BPS8 Battery, Sony VGP-BPS9 Battery, Sony VGP-BPS10 Battery, Sony PCG-R505 Battery, Schindall explains, "We made the connection that perhaps we could take an old product, a capacitor, and use a new technology, nanotechnology, to make that old product in a new way."
Rechargable and disposable batteries use a chemical reaction to produce energy. "That's an effective way to store a large amount of energy," he says, "but the problem is that after many charges and discharges ... the battery loses capacity to the point where the user has to discard it."
But capacitors contain energy as an electric field of charged particles created by two metal electrodes. Sony VGP-BPS8 Battery Capacitors charge faster and last longer than normal batteries. The problem is that storage capacity is proportional to the surface area of the battery's electrodes, so even today's most powerful capacitors hold 25 times less energy than similarly sized standard chemical batteries dell inspiron 9300 battery ,dell inspiron 9400 battery.
The researchers solved this by covering the electrodes with millions of tiny filaments called . Each nanotube is 30,000 times thinner than a human hair. Similar to how a thick, fuzzy bath towel soaks up more water than a thin, flat bed sheet, the nanotube filaments increase the surface area of the electrodes and allow the capacitor to store more energy. Schindall says this combines the strength of today's batteries with the longevity and speed of capacitors.
This technology has broad practical possibilities, affecting any device that requires a battery. Schindall says, "Small devices such as hearing aids that could be more quickly recharged where the batteries wouldn't wear out; up to larger devices such as automobiles where you could regeneratively re-use the energy of motion and therefore improve the energy efficiency and fuel economy."
Schindall thinks hybrid cars would be a particularly popular application for these dell inspiron xps m170 battery ,dell inspiron xps m1710 battery batteries, especially because current hybrid batteries are expensive to replace.
Schindall also sees the ecological benefit to these reinvented capacitors. According to the ,Sony PCG-R505 Battery more than 3 billion industrial and household batteries were sold in the United States in 1998. When these batteries are disposed, toxic chemicals like cadmium can seep into the ground.
"It's better for the environment, because it allows the user to not worry about replacing his battery," he says. "It can be discharged and charged hundreds of thousands of times, essentially lasting longer than the life of the equipment with which it is associated."
Schindall and his team aren't the only ones looking back to capacitors as the future of batteries; a research group in England advances of their own. But Schindall's groups expects their prototype to be finished in the next few months,Sony VGP-BPS8 Battery, Sony VGP-BPS9 Battery, Sony VGP-BPS10 Battery, Sony PCG-R505 Battery, and they hope to see them on the market in less than five years.
Schindall's research was featured in the May 2006 edition of and presented at the 15th International Seminar on Double Layer Capacitors and Hybrid Energy Storage Devices in Deerfield Beach, Florida on December 2005. His research is funded by the pa3285u-1brs,pa3285u-2brs,pa3284u-1brs,toshiba tecra a1 battery .
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