It's cool to see more work being done in this area, Cabe. I've covered some of the innovations in these types of materials and energy sources myself and I find them quite useful technology developments. Some of the energy-harvesting materials in particular that don't even use batteries are interesting as well: http://www.designnews.com/author.asp?section_id=1386&doc_id=262437
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.
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.
Cabe - I didn't know that Samsung (or anybody for that matter) had a bendable display like that until I saw your post and googled it. The general nature of flexible design has a lot of cool possibilities going forward.
Cabe , i didnt knew that samsung is using stretchable lithium ion batteries and producing flexible screens before your post .No doubt these batteries are the very next technology although a lot of work has to be done in it.These stretchable batteries can also be used to power the bionic eyes
I saw the Samsung demo at CES 2013 back in January. With tech ideas like this, it always takes a while for the generational increments to catch up to concepts. Think concept cars versus the ones actually produced.
As Apple stops buying chips and things from Samsung, Samsung will need a new cash cow. Since I am sure they are patenting their bendable tech, keeping it out of Apple's hands, they will have to push the flexibility angle.
Ah, interesting, I wouldn't think bendy technology would be so durable offhand but now that I think about it and you mention it, I guess you're right. It could take more of a beating than hard-shelled technology that can crack, break or shatter. So this is the design wave of the future, then, for devices...?
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?
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.
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.
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.
Good post Cabe. I can certainly see how this could improve the lives of many individuals. From looking at your illustration, it would appear the weight is minimal with materials that are seemingly "off the shelf". Do you have any information on how this is funded; i.e. private, Federal, etc.? The reason for asking, I see many federally funded programs being cut over the next few years and this appears to me to be a very worthwhile investigation. It would be a pity if it got cut.
Researchers have been working on a number of alternative chemistries to lithium-ion for next-gen batteries, silicon-air among them. However, while the technology has been viewed as promising and cost-effective, to date researchers haven’t managed to develop a battery of this chemistry with a viable running time -- until now.
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