Sunday, December 6, 2009

The birth of super-capacitors

The birth of super-capacitors


Published in April 2006 in accordance with the patent MacBook Pro 17 inch Battery, PowerBook G4 12 inch Battery, EEStor energy storage device that is coated with aluminum oxide ceramic powder and glass surfaces. Technically, it is not a battery, but a super capacitor, its charge within 5 minutes of power can go 500 miles an electric car, electricity is only nine U.S. dollars - while the internal combustion engine burning gasoline mileage of the car to go the same will have to spend 60 U.S. dollars.


Compared with the traditional electrochemical batteries, super capacitors has many advantages. It can accept unlimited numerous discharge and charge, in other words, super capacitor is no "memory." However, the general super-capacitors also has its weaknesses, that is, the rate of energy storage is limited( PowerBook G4 15 inch (titanium) Battery, PowerBook G4 15 inch (aluminum) Battery, PowerBook G4 17 inch Battery), today's high-end super-capacitors on the market per pound of stored energy of lithium battery is only 1 / 25.


The EEStor supercapacitor developed, due to barium titanate has sufficient purity, the energy storage capacity greatly increased. EEStor company claims that the super capacitor energy stored per kilogram of up to 0.28 kwh, compared to 0.12 per kg of lithium Compaq Battery kWh lead-acid battery is only 0.032 kwh, which has been so super-capacitors used in electric vehicles from, other areas such as pacemakers to weapons possible.


Good lead-acid batteries can be charged 500 ~ 700 times, according to EEStor's statement, the new super-capacitors can be recharged more than 1 million times, it will not appear material degradation problems. Moreover, since it is not a chemical battery, but a solid state energy storage system, does not appear that lithium 319411-001, Presario 1200 Battery overheating and even the danger of explosion, there is no security risk.