candidate Riccardo Signorelli are using nanotube structures to improve on an energy storage capacity around times less than similarly sized lithiumion battery. The LEES ultracapacitor has the capacity to overcome this energy limitation by using vertically aligned, singlewall carbon nanotubes one thirtythousandth the diameter of human hair and 100,000 times as long as they are wide. Original image courtesy WikipediaImages of different types of carbon nanotubes. How does it work? Storage capacity in an ultracapacitor is proportional to the surface area of the electrodes.
Kassakian, EECS professor and director of LEES and Ph. D. MIT powers up new battery for hybrid cars Researchers at MIT have developed new type of lithium battery that could become cheaper alternative to the batteries that power hybrid electric cars. Original image courtesy WikipediaImages of different types of carbon nanotubes. candidate Riccardo Signorelli are using nanotube structures to improve on an energy storage capacity around times less than similarly sized lithiumion battery.
Enlarge image TOOLS Print version RSS feedsRELATED MIT lines up battery of options Better lithium ion batteries, solidstate batteries and new materials that could make rechargeable batteries for electric cars cheaper and safer are among MITs recent battery innovations. They are sometimes used in fuelcell vehicles to provide an extra burst for accelerating into traffic and climbing hills. However, ultracapacitors need to be much larger than batteries to hold the same charge. The LEES invention would increase the storage capacity of existing commercial ultracapacitors by storing electrical fields at the atomic level.
Nanotubeenhanced ultracapacitors would combine the long life and high power characteristics of commercial ultracapacitor with the higher energy storage density normally available only from chemical battery. This work was presented at the 15th International Seminar on Double Layer Capacitors and Hybrid Energy Storage Devices in Deerfield Beach, Fla., in 2005. The work has been funded in part by grant from the FordMIT Alliance. The new nanotubeenhanced ultracapacitors could be made in any of the sizes currently available and be produced using conventional technology.
MIT Laboratory for Electromagnetic and Electronic Systems John MIT powers up new battery for hybrid cars Researchers at MIT have developed new type of lithium battery that could become cheaper alternative to the batteries that power hybrid electric cars. you can find ultracapacitors in range of electronic devices, from computers to cars. However, despite their inherent advantages 10yearplus lifetime, indifference to temperature change, high immunity to shock and vibration and high charging and discharging efficiency physical constraints on electrode surface area and spacing have limited ultracapacitors to an energy storage device called an ultracapacitor.
Tags: batteries, electric cars, energy storage, hybrid cars
