15 Jan '12, 9pm

IBM Invents EV Battery with 500 mile Range

IBM Invents EV Battery with 500 mile Range

Researcher Examining Li-ion Battery - Argonne National Laboratory IBM has invented a lithium-air battery technology that makes it possible to drive electric vehicles (EVs) for 500 miles (804 km) per charge. Lithium-air battery technology is not new, but it does have the potential to achieve unusually high energy densities that rival that of all rechargeable batteries in use today. The reason why batteries with higher energy densities enable EVs to drive further is simply because they are lighter (they have a better gravimetric energy density). Lighter batteries weigh down the vehicle less, so it requires less energy to drive a given distance. This translates into more energy being available for driving. Each kWh (kilowatt-hour) of energy takes you further. A greater gravimetric energy density can also mean that fewer batteries can be used to achieve the usual < 100-mile ra...

Full article: http://cleantechnica.com/2012/01/15/ibm-invents-ev-batter...

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