subject: A Battery-ultracapacitor Hybrid , You Best Battery Shops [print this page] www.batterylaptoppower.com By combining the chemistries of ultracapacitors and lithium-ion batteries, a company called Ioxus has created a hybrid energy-storage device that could recharge power tools in minutes and might never need to be replaced. The company says future incarnations could perhaps be used to capture energy from braking vehicles.
Ultracapacitors capture and release energy in seconds and can do so millions of times, but they store only about 5 percent as much energy as lithium-ion batteries. The hybrid can store more than twice the energy by volume of standard ultracapacitors. Thats still much less than a lithium-ion battery, but the hybrid can be recharged quickly over 20,000 times as against a few hundred cycles for a typical battery.
A power tool using the lithium-ion ultracapacitor would run for only a 15th as long as it would on a Acer Laptop Battery but would recharge in just a minute. Our product is for weekend warriors who dont use the power tool much every day but want very fast charging, says Mark McGough, CEO of Ioxus. The company, which is based in Oneont, New York, already makes conventional ultracapacitors for hybrid-electric buses and for engine start-stop systems that are used to increase fuel economy in cars.
The hybrid energy-storage device consists of an etched aluminum film coated on one side with carbon slurry, which is similar to the electrode found in an ultracapacitor. The other electrode, on the other side of the film, is coated not with carbon but with a lithium-ion material, providing more Acer as07b41 battery energy-storage capacity. The film is wound into a cylinder to make the finished device.
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