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Sunday, November 29, 2009

Nissan Long Range Battery May Be Ready by 2015

Nissan Motor Co. is developing a lithium ion battery for electric vehicles that can store electricity at double the current capacity. Nissan aims to equip electric cars with the battery by 2015.

The new system is a lithium-ion battery using a lithium nickel manganese cobalt oxide cathode. Capacity is raised by improving the positive electrode, specifically, using nickel and cobalt, not only manganese. The new battery can store about twice as much electricity as batteries with positive electrodes made only from manganese. It is robust enough for practical use, able to withstand 1,000 or so charge cycles.

Nissan estimates that the battery will cost about the same as conventional lithium ion ones to produce, as it contains only a small amount of cobalt, a relatively expensive metal.

The new battery will be able to power an electric vehicle for 300 kilometers (186 miles) on a single charge, about twice the distance currently possible.

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