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Redox Flow Batteries
http://www.greencarcongress.com/2009/10/redox.html
Redox flow batteries theoretically offer a number of advantages:
high energy efficiency >75 % (> 95% found on lab scale)
long calendar life, excellent cycle ability (> 10,000)
flexible design
fast response time
overcharge and over discharge tolerant
low maintenance costs
low self discharge or no discharge depending on pumping of electrolyte
Up to now, however, redox flow batteries have had the disadvantage of storing significantly less energy than lithium-ion batteries. The vehicles would only be able to cover about a quarter of the distance-around 25 kilometers (15 miles)-which means the driver would have to recharge the batteries four times as often.
The Fraunhofer team has increased the capacity four or fivefold, to approximately that of lithium-ion batteries, according to Noack. The team has already produced the prototype of a cell, and is in the process of assembling several cells into a larger unit and optimizing them.
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http://www.greencarcongress.com/2009/10/redox.html
Redox flow batteries theoretically offer a number of advantages:
high energy efficiency >75 % (> 95% found on lab scale) long calendar life, excellent cycle ability (> 10,000) flexible design fast response time overcharge and over discharge tolerant low maintenance costs low self discharge or no discharge depending on pumping of electrolyteUp to now, however, redox flow batteries have had the disadvantage of storing significantly less energy than lithium-ion batteries. The vehicles would only be able to cover about a quarter of the distance-around 25 kilometers (15 miles)-which means the driver would have to recharge the batteries four times as often.
The Fraunhofer team has increased the capacity four or fivefold, to approximately that of lithium-ion batteries, according to Noack. The team has already produced the prototype of a cell, and is in the process of assembling several cells into a larger unit and optimizing them.
---------------------------
Fill er Up?
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