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Battery Fueled By Air Could Power Cars, Laptops

According to researchers at the University of St. Andrews, the St. Andrews Air battery (STAIR) may be the ticket to a new era of laptops, mobile devices, and electric cars, discarding traditional chemicals and using air as a source of power.

While the overall design has not been finalized, the researchers behind the project say that the air-fueled battery could present ten times the energy capacity of rechargeable lithium batteries currently available on the market.

“Our target is to get a five to ten fold increase in storage capacity, which is beyond the horizon of current lithium batteries. Our results so far are very encouraging and have far exceeded our expectations,” said Professor Peter Bruce of the Chemistry Department at the University of St Andrews.

Rather than using the traditional chemical constituent, lithium cobalt oxide, the STAIR battery utilizes porous carbon. Oxygen is freely drawn in from the air and reacts within the pores of the carbon component, creating a constant "flow" of energy, or as Bruce states, a reagent, continuously recharging the battery as it discharges. Because the battery doesn't require chemicals, it offers more energy for the same size battery currently available on the market, and is relatively cheaper than its chemical-based comrades.

Currently the research project reaches its halfway mark in July. Entitled "An O2 Electrode for a Rechargeable Lithium Battery," the research began on July 1, 2007, and is expected to end on June 30, 2011. The primary focus of the project is to understand how the chemical reaction of the battery works, and how to improve it. The team plans to create a STAIR cell prototype that can work in a cell phone or MP3 player, however the battery will more than likely not see a commercial release for at least another five years.

While the project is being led by Bruce and the research group over at the University of St Andrews, Strathclyde and Newcastle are also pitching in to provide additional help. The Engineering and Physical Sciences Research Council (EPSRC) is providing the funding for the project, with £1,579,137--almost 2.2 million USD--donated thus far.

  • jecht
    Sweet
    Reply
  • dman3k
    Stop breathing my air, you're sucking my battery!
    Reply
  • worst3
    can you recharge it? and would it release oxygen when you do. or dose it just get clogged with oxygen and become useless?

    seem like a good idea except of NASA
    Reply
  • jacobdrj
    Sounds like a perpetual motion machine trying to shatter the 2nd law of thermodynamics...

    Where is the energy coming from?
    Reply
  • coopchennick
    How would it work in a sealed phone like the iphone?

    Won't the battery need more or less constant contact with the air? I don't want a battery sticking out the back of my phone...
    Reply
  • Humans think
    worst3seem like a good idea except of NASAThat's funny!
    jacobdrjSounds like a perpetual motion machine trying to shatter the 2nd law of thermodynamics...Where is the energy coming from?I didn't also understand how it really works I guess it is like "2*H2+02->2H20(ash)+thermal energy" then you apply electrical current and it becomes "electrical energy + 2H20 -> 2*H2(fuel) + 02". I guess they found a way to do "carbon fuel + 02 -> carbon ash + electrical energy" when you plug it in again "carbon ash + electrical energy -> carbon fuel + 02"
    worst3and would it release oxygen when you do.I guess if my guess is correct it should.

    It is a genius idea if this is how it works. And from its ashes fuel would be reborn. Of course, i speculate it will have thermal losses and of course some tearing of the material
    Reply
  • astrotrain1000
    They are calling this a battery not an energy source so I don't think perpetual motion is what they have in mind. It seems like to me that something in this battery reacts with the air to produces electricity, probably reaching a cap or saturation point. Then you'd have to go home and plug you battery into something to "drain" your battery of the oxygen. All standard loses to heat would apply just that the actuall storage of energy would be higher than lithium.
    Reply
  • anamaniac
    An intriguing idea.

    Someone give these guys more funding to see what they can do. :)

    Also, though it stores more energy, how efficient would it be?
    How much does the charge dwindle over time? Simply cut the airflow to preserve battery life?
    How many times could it be recharged?

    In theory, this would be an excellent step for electric cars, because chemical battery storage is expensive, consumes a lot of volume, and inefficient, and recycling is needed.
    Instead if getting 100 miles on a charge, getting 1000 miles or more would be awesome. Being cheaper in the first place you could use more batteries.

    It'll be wonderful to see were this goes for now, and I do hope it lives up to its potential. I can wait 5 years.
    Reply
  • grieve
    I dunno... something seems fishy here.

    This is almost perpetual motion, except the carbon component would have to be changed im sure.

    "" Oxygen is freely drawn in from the air and reacts within the pores of the carbon component, creating a constant "flow" of energy, or as Bruce states, a reagent, continuously recharging the battery as it discharges.""

    SOOO if it is constantly recharging it would not have to be very large?
    This battery will take over the earth's power needs... Just get a battery large enough to power a factory or your home/car/everything.
    Reply
  • IronRyan21
    I wonder if these guys have a team that tracks bigfoot as well.
    Reply