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Aluminum Batteries: A breath of fresh air for Electric Vehicles

fayt · 3 · 2740

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Offline fayt

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Range: it’s the main obstacle to battery-electric cars. Aluminum maker Alcoa has teamed up with battery developer Phinergy to make a battery that’s capable of powering a car for over 1000 miles (1600 km). The only catch: the battery isn’t rechargeable, at least not in the traditional sense.

The Phinergy-Alcoa team is proposing a combination of batteries for electric cars: the main power source would be comprised of rechargeable Li-ion batteries, just like most electric and hybrid cars. A supplemental aluminum-air battery would provide the additional range that allows the car to go 1000 miles. Aluminum-air batteries offer a very high energy density: 2 kWh/kg, about 15 times that of their Li-ion counterparts. Its high energy density comes from the fact that air provides the oxygen needed for the chemical reaction, so one of the chemicals doesn’t need to be contained within the battery itself. That eliminates the weight of the chemical as well as its storage container.

The problem with aluminum-air batteries is that they aren’t “plug-in” rechargeable. The way to recharge aluminum-air batteries is to replace the aluminum plates. Fortunately, aluminum is inexpensive and fully recyclable.

The team believes that electric cars would run on Li-ion batteries for their normal day-to-day driving, which, for 95% of all applications, is within 30 miles (50 km). If you’re going just a little farther, the aluminum-air batteries would give the extra range. Since that rarely happens, the companies estimate that the aluminum would need to be replaced about once per year.

Phinergy hopes to have their batteries in commercial cars by 2017. No word yet on which car manufacturer(s) might give this a shot. It’s a gamble. Hybrid cars are the safer bet for a combination of range and low emissions, but higher risks often produce greater rewards, so it may be worthwhile for an auto maker to give this a shot; it could be a breath of fresh air for the EV market.
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Offline polgas88

Next step is to transfer elec energy through wifi or signals.mas ok yun.

Offline jamesbond

another breakthrough in science... i hope they can lower their prices once it hits the market so that everyone can enjoy their inventions

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Re: Aluminum Batteries: A breath of fresh air for Electric Vehicles
« Reply #2 on: July 06, 2014, 07:22:44 AM »


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