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Kinnar
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The life of the battery
Kinnar   8/21/2013 1:25:11 PM
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Due the elimination of the ion-exchange membrane I think the life of battery will be more as compared with the Lithium-ion batteries, but again the life will be limited because of the electochemical reactions at the electrodes. The article is not discussing about the life of the battery which is an important parameter in comparison of batteries.

R_Colin_Johnson
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Re: The life of the battery
R_Colin_Johnson   8/21/2013 1:39:17 PM
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The researchers primary purpose in eliminating the ion-exchange membrane, was to extend the lifetime of flow batteries, which they now claim to have achieved. However, long-term tests have yet to be performed on real membrane-less flow batteries to determine just how long they'll last.

Kinnar
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Re: The life of the battery
Kinnar   8/21/2013 3:02:56 PM
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Yes you are right, and from the architecture of the battery as explained it seems that this batteries will be surely have more life time as compared to the batteries we are using today. But will have to wait for the actual results for the exact figures.

p_g
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timeline...
p_g   8/21/2013 6:52:59 PM
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When is it comming to market?

rick merritt
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Re: timeline...
rick merritt   8/21/2013 9:50:33 PM
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..and is this only pratical for large size batteries used to store energy from solar farms et al or could it see use in smaller scale versions in cars or consumer devices?

I heard the cheapest form of energy storage for renewables is pumping water up hill by days and letting it flow back down at night.

R_Colin_Johnson
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Re: timeline...
R_Colin_Johnson   8/22/2013 12:20:52 AM
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The design is still in prototype stage, it will need extensive optimizaton before commercialization, which typically takes three to five years.

R_Colin_Johnson
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Re: timeline...
R_Colin_Johnson   8/22/2013 12:26:11 AM
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Yes there are many ways to store Big Energy--my favorite is compressing the air in unground caves during demand lulls, then bleeding it off to generate electricity during demand peaks.

Smaller versions are possible--since their protype is small enough to handhold--but these researchers had the primary goal of meeting the $100 per kilowatt mandated by the DoE, which is the break-even point for grid-scale deployment.

 

Bigboote
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Re: timeline...
Bigboote   8/22/2013 11:41:20 AM
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Maybe pump it up-hill at night when demand is low (and energy is available for pumping) and flow it back thru the turbines during daytime peak demand.  BTW Niagara Falls will soon have more generation capacity due to a "big-dig" to increase flow!

cedricfau
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Re: timeline...
cedricfau   8/22/2013 11:42:27 AM
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100$/kwh when typical US prices are 12c/kwh seems quite expensive! Nevertheless electricity storage is "must have" for renewable energies production.

cedricfau
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Re: timeline...
cedricfau   8/22/2013 11:46:08 AM
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Yes you're right pumping at night generally. In Europe, we had negative electricity prices on the spot market in the past months. Imagine when you have such Pumped-storage hydroelectricity system ...

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