Technological advancement in Batteries

Improvements in Battery Technology
Batteries store electricity in a chemical form, inside a closed-energy system.
On the technical developments, the battery is an area where there have been improvements, although there have not been great change in commercial battery availability. Nickel cadmium or Nickel metal hydride at best can carry double the energy of Lead acid batteries and the high temperature and sodium nickel chloride can carry nearly three times but they do not allow the design of vehicle with a long range.In practice the available rechargeable batery with highest specific energy is the lithium polymer batteries whose specific energy is about three times that of Lead acid batteries.

Nanowire battery can hold 10 times the charge of existing lithium-ion battery. Stanford researchers have found a way to use silicon nanowires to reinvent the rechargeable lithium-ion batteries that power laptops, iPods, video cameras, cell phones, and countless other devices. The new technology, developed through research led by Yi Cui, assistant professor of materials science and engineering, produces 10 times the amount of electricity of existing lithium-ion, known as Li-ion, batteries. A laptop that now runs on battery for two hours could operate for 20 hours, a boon to ocean-hopping business travelers.