Are Aluminum-Air Batteries The Next Big Thing In Power?

Tesla pushed the use of aluminum in cars forward with its groundbreaking (and award-winning) Model-S. However, it still used traditional lithium-ion technology to power its batteries. Aluminum may pave the way for a new advancement in electric car technology, but this time it’s in the area of power, not structure. Can a mix of aluminum and water become the battery of the near-future? From Extreme Tech:

On the one hand, breakthroughs in Li-ion designs and construction are responsible for the Tesla Model S, new installations, green energy research, and the modern smartphone. On the other hand, lithium-ion limitations are the reason why most EVs have a range of 40-60 miles, the Model S costs upwards of $80,000, and why your smartphone can’t last all day on a single charge. For all its promise and capability, lithium-ion has limited long-term utility — which is why a new announcement from Fuji Pigment is so interesting. The company is claiming that its new aluminum-air batteries can run for up to two weeks and be refilled with normal water.

That said, there are question, too. The hydrated aluminum oxide solution produced during the battery’s normal operation would need to be recycled in some fashion, it’s not clear that fresh water is as effective an aqueous solution as saltwater (meaning there might be specific need for one particular kind of solution). The final price is also unknown, though previous estimations had put the cost of an Al-air system at roughly $1.1 per kg of aluminum anode. This was not given in precise terms relative to the cost of gasoline (and the weight of the aluminum anode in these batteries is unknown), but the team that performed that analysis noted that proper recycling would put Al-air in the same cost range as conventional internal combustion engines.

Fuji Pigment has stated that it intends to commercialize this technology as early as this year, which means we could see test demonstrations and proof of concepts by 2016. Whether auto manufacturers will jump for the technology remains to be seen — car companies tend to be conservative and Tesla has already thrown its weight behind the further use of lithium-ion technology.

For a deeper look at just how this battery works on a technical level, head over to Extreme Tech and read the full article.

2015-06-18T15:33:03+00:00 January 29th, 2015|
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