[ARS] : "Electrode lets lithium batteries charge in just two minutes"

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cpf
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[ARS] : "Electrode lets lithium batteries charge in just two minutes"

http://arstechnica.com/science/news/2011/03/electrode-lets-lithium-batteries-charge-in-two-minutes.ars

...  But batteries can't move charge as quickly as some competing devices like supercapacitors, and their performance tends to degrade significantly with time. That has sent lots of materials science types into the lab, trying to find ways to push back these limits, sometimes with notable success. Over the weekend, there was another report on a technology that enables fast battery charging. The good news is that it uses a completely different approach and technology than the previous effort, and can work with both lithium- and nickel-based batteries. ...

Edited by: cpf on 03/22/2011 - 22:51
FlashPilot
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Three-dimensional bicontinuous ultrafast-charge and -discharge bulk battery electrodes

"Rates of up to 400C and 1,000C for lithium-ion and nickel-metal hydride chemistries, respectively, are achieved (where a 1C rate represents a one-hour complete charge or discharge), enabling fabrication of a lithium-ion battery that can be 90% charged in 2 minutes."

Now if this technology would come to fruition for consumer markets. Im not holding my breath.

 

Don
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1000C on NiMH!

2000A power supplies are rather large, heavy and expensive. I'd guess they are in the price bracket usually spent on cars. Certainly wouldn't work with current cells - I imagine an Eneloop fed nearly three kilowatts would get a bit warm.

 

Shortly before it became a rapidly expanding cloud of gas.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

FlashPilot
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With applications in cell phone batteries, the articles suggest an inexpensive solution to manufacturing and implementation. Perhaps the test cell has such low resistance to accept such a charge that very little heat is generated during the charging process. As for the high current DC charging source, just pop the hood of your car and connect the jumper cables for a few seconds.

Surprised