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Charles Murray
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Blogger
Re: The stretchable battery lifetime.
Charles Murray   5/2/2013 7:38:22 PM
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I agree, William K. Stretch and release of the material would be key. Maybe it's a little too early to ask this question, but I do wonder what the elastic properties of this material are like. Also, if it's bent at a right angle, would it be subject to strain hardening? Those may sound like little details, but they would bear on the battery's ability to be useful throughout the life of a product.

NadineJ
User Rank
Platinum
Re: Limitation
NadineJ   5/2/2013 10:49:15 AM
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That's a good point.  Fabric memory (or retention) is important.

I doubt that this would be placed on the body at a joint (elbow, knee, hip, etc).  Proper placement, at the forearm or shin for example, would help increase the lifecycle.  3x stretch isn't very much for a textile.  From what I can see, the construction has a "bounce" to it that allows the give in the fabric without compromising the metal.

PAULHBERG
User Rank
Iron
Re: Interesting innovations
PAULHBERG   5/2/2013 10:24:02 AM
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This technology is ALL well and good. But what about Micro-shorting in the Lithium-ion Battery.  I don't believe many have seen the result of a micro-shorted Lithium-ion Battery.  Would be VERY BAD if all of a sudden your pants EXPLODED.  Just something to consider is all.

Jim_E
User Rank
Platinum
How does this affect....
Jim_E   5/2/2013 10:10:58 AM
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I wonder how this affects the seemingly inane desire of Lithium-Ion batteries to catch fire....

William K.
User Rank
Platinum
The stretchable battery lifetime.
William K.   5/2/2013 10:08:46 AM
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It looks like the stretchable battery would have a lifetime limited by the wear between the different materials as it is stretched and released. That may not be a problem for some uses, but it must absoletely be considered as the product is developed. I have seen a few membrane keypads that have just worn away and no longer function on some keys, and so it is clear that wherever there is motion there is wear. There are ways to extend the time until that wear causes failures, but the fixes only can help if they are included. So while there is a solution it is not automatic, it would need to be intentionally included.

But now the whole concept and realization of an actual stretchable battery is certainly a great achievement, no doubt about that.

AnandY
User Rank
Gold
Limitation
AnandY   5/2/2013 8:44:22 AM
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Now researchers from Northwestern University and the University of Illinois have revealed work on a lithium-ion battery that can stretch up to three times its original size.


Its a great technology that lithium-ion batteries can be stretched. As mentioned that batteries can be stretched up-to three times, is this stretching operation is reversible? Is there a limit on number of times battery can be stretched?

Elizabeth M
User Rank
Blogger
Re: Interesting innovations
Elizabeth M   5/2/2013 7:08:28 AM
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Definitely, Chuck, this could fit right in with alot of the work being done in this area. It could even be paired up with energy-harvesting fabrics to create a super-power stretch suit.

Charles Murray
User Rank
Blogger
Re: Interesting innovations
Charles Murray   5/1/2013 9:30:53 PM
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This is one of those developments that could have an endless number of applications. I could see this being used in "powered clothing."

Rob Spiegel
User Rank
Blogger
Re: Interesting innovations
Rob Spiegel   5/1/2013 4:02:53 PM
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This technology reminds me of some of the technology imagined in the movie Vanilla Sky -- where everything had a skin of personal interactive advertising. I would imagine there is a wide range of applications for this flexible technology.

Elizabeth M
User Rank
Blogger
Re: Interesting innovations
Elizabeth M   5/1/2013 10:59:29 AM
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True, Nadine, all these emerging flexible technologies that used to be static and hard are quite impressive. I can't wait to see them all being widely used in the market.

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