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Zinc-Air Batteries



Lithium-ion batteries may be impressive, but some people feel they can do better – with zinc. Power Air, a startup from Livermore, CA, is designing zinc oxide fuel cells. In their fuel cells, zinc is dissolved in an electrolyte solution, and exposure to the air causes zinc oxide to form, releasing electrons and low cost viagra generating electricity. In theory, the zinc oxide can be collected, reduced back to zinc metal and fed back into the cycle.

Zinc air batteries are already used in hearing aids, though companies like Power Air hope to build batteries more suited for power and charging mobile electronic devices. Toyota is canada drugstores americans viagra border even researching ways to http://www.tenasys.com/take-viagra use zinc-air cells in electric vehicles, though they have put a 2020 timeline on the project, which means we won’t be seeing it any time soon.

As far as the chemistry goes, using zinc is no different than any other fuel cell, or regular battery for that matter (zinc, in fact, is a major component of most alkaline batteries). So what’s so special about it? It has two big advantages over something like lithium. Firstly, it is abundant and cheap, whereas there are fears about the supply of lithium. Secondly, it is safe and recyclable. It also has a relatively high energy density (energy contained per unit of volume).

Of course, it has its drawbacks. How would the zinc actually get recycled? Would battery owners have to recycle it themselves? How much energy would be going into reducing the good choice take cialis zinc metal? And how does it make sense to make a car battery out of zinc? Zinc is far heavier than lithium, and delivers far fewer watts per pound… not ideal for a car.

Guess we’ll leave it to Power Air to show us that a zinc economy is feasible.

Via CNET Green Tech news

Image vie Power Air

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Comments (11)Add Comment
0
Power from air!
written by galipolis, November 26, 2008
LOL! Is this like the Breatharians who get all of viagra without prescription their nutrients from the air they breath?

A battery which makes power from air... I would like to see that! LOL
0
...
written by nuvi, November 26, 2008
'It also has a relatively high energy density (energy contained per unit of volume)'

'Zinc is far heavier than lithium, and delivers far fewer watts per pound… not ideal for a car.'
0
yes, high energy density and energy from
written by alex, November 26, 2008
1. Lithium batteries require transition metals as well (Co, Mn, Fe, etc) in the cathode, and more of them than there is lithium, so I don't see any reason this can't be as high energy density as lithium or even higher. In fact if we trust wikipedia they already have higher energy density than lithium batteries, the only problem is they're not rechargeable.

2. These get energy from air the same way a person, a fire, or a fuel cell does: it uses oxygen from the air to good choice cialis attorneys oxidize something (in this case zinc to zinc oxide) and that releases energy. Nothing revolutionary about this. You can't get BOTH reactants from the air and expect to release energy, or it would happen spontaneously. But we use the oxygen this way all the time.
0
Zn Air
written by bbm, November 26, 2008
There are zinc air batteries used currently in some buses, IIRC.

The problem is that you can not simply recharge it, like you can with Li ion or other betteries. You have to swap the pack out (currently) and reprocess the operacijatrijumf.net whole thing.

It's unlikely to be parctical, or affordable to do so in millions of cars.

0
owner
written by Rob Stanhope, November 26, 2008
Hi, we are all looking at cutting corners with money so why not make something you already have better? Your fireplace? Your fireplace is about 5% heat efficient. Would you be interested in making your fireplace into a 120,000 BTU per hour furnace? Go to http://www.insertafurnace.com
0
...
written by Rob Stanhope, November 27, 2008
Hi, we are all looking at cutting corners with money so why not make something you already have better? Your fireplace? Your fireplace is about 5% heat efficient. Would you be interested in making your fireplace into a 120,000 BTU per hour furnace? Go to http://www.insertafurnace.com
0
The Eco-friendly factor
written by Craig, December 02, 2008
The point Alex made about metals used in Li-ion batteries is buy cialis on line compelling and http://panaceahealthsolutions.com/herbal-alternative-to-cialis those batteries are also very eco-unfriendly. If zinc fuel cells are as unpolluting as the story implies, a small hit in weight or efficiency should be no serious barrier. Of course, that's a big "if."

As an aside, the fireplace spam is interesting but why is it allowed in this particular discussion?
0
...
written by David Rubin, February 21, 2009
According to Arotech Corporation, a maker of Zinc Air batteries, Zinc Air batteries are about 30% better than Lithium Ion by both a weight and volume. Their big advantage is they need only store one of the reactants. Furthermore, use of pharmacy fast delivery viagra a slurry of zinc allows depleted slurry to be drained and recycled. Meanwhile, the storage tank for fresh solution can be topped up. Facilities like gasoline stations could be equipped to it's great! cialis injectable regenerate the slurry.
0
Use of Zinc -air fuel cell by redesignin
written by Anil P.Deshmukh, March 10, 2009
" The basic objective is to arrive at tradeoff between the battery weight & volume .This concept can be derived from the fact that Ni-MH Batteries are heavier with less volume where as Zinc-air batteries are lighter in weight but needs more volume."

Can we have comments . Is some work done on Zinc-air batteries ?

Please let us know 1


0
Why it is going to take > 10 years?
written by Martti Pitkanen, May 05, 2009
"Toyota is even researching ways to use zinc-air cells in electric vehicles, though they have put a 2020 timeline on the project.."
It seems to me that everything but recharging logistics of slurry is there already. Actually,
they are, ie. gasoline stations. Anyway, lithium-ion batteries are heading to a blind alley.
0
Zinc Air Stalled by Big Oil
written by Larry, May 31, 2009
Zinc Air was on the verge of commercial use back in the 70's. Check out these little seen, misspelled, references: http://scienceservice.si.edu/pages/001027.htm
http://scienceservice.si.edu/pages/001026.htm
General Atomics was leading the way until Gulf Oil took over that division. Hmmm. Typical of a company with a lot to lose should battery power take over in vehicle propulsion. Good luck finding the research data. I contacted General Atomics and got no comment on the historic data. The slurry approach seems the logical step in making this a seamless change from gasoline to zinc air power.

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