New lithium-ion battery design that’s 2,000 times more powerful, recharges 1,000 times faster... I'm drooling!

http://www.extremetech.com/computing/153614-new-lithium-ion-battery...

Can anyone put me into hibernation for 5 years? 

Make sure one of you wakes me up!

Views: 1103


Developer
Comment by John Arne Birkeland on May 23, 2013 at 1:32pm

According to the article it has higher power density, but not higher energy density then current batteries. So it mean that you can draw more current out of the battery quickly, and charge it quicker. A higher C rating using current LiPo terms. But it still has the same size and weight as current batteries for the same storage capacity (Mah). The author then seem to confuse terms and starts talking about 30 times smaller batteries in phones, which is in direct conflict with the previous statement about energy density...

Comment by Dave C on May 23, 2013 at 1:59pm

Yes indeed it wasn't the best article, I'm sure we will hear more in time. It just had me staring at a wall with designs on a set of my own wings...

It does say that it can be optimised for more juice or increased life.

Comment by Rob_Lefebvre on May 23, 2013 at 2:08pm

Seems like these massive battery breakthrough stories come about once a month or so... but nothing changes very fast in the actual market.

Comment by Chuck on May 23, 2013 at 2:32pm

@Dave good to know I am not the only person that makes designs with a "Need X Component Developed" sticker on them. Battery density is one of the main hurdles to overcome for the next wave of technology breakthroughs.

Comment by Gary McCray on May 23, 2013 at 9:21pm

Actually, we already had a blog 3 or 4 weeks back on this University of Illinois battery technology.

Basically using micro-cellular construction they have much better denser current path.

Batteries don't really have any more capacity but you can charge and discharge them really quickly and without damaging them.

And they probably will eventually have a lot better cycle life too.

The rate of discharge puts them up with super capacitors but at a much higher power density.

There are undoubtedly some very interesting things that can be made where their capability for massive instantaneous power can actually be put to good use.

(Hand held rail gun!)

I would guess there capability for spectacular failure will be pretty high too.

Comment by Euan Ramsay on May 23, 2013 at 10:57pm
Agreed - capacity is not up, but charging ability is. Also, the normal laws of physicals still apply - dumping say 10A into a 5cmx5cmx15cm space is gonna generate heat. And you're gonna need a *really* thick cable...

More capacity would be nice, but as density goes up, does the drama level when one gets punctured...

Developer
Comment by Olivier ADLER on May 26, 2013 at 6:55am

Seems like a dangerous technology. If the power density is 2000 times higher, then it means that it is able to deliver about 40 000 C or more !

Actually we are able to charge Lipo at 6C or even 10C. For a 4 Ah Lipo, you'll need a 40 A charger to get this capability. 40A is the strongest hobby Lipo charger you can get today.

To charge 1000 times faster, you'll need a 40 kA charger... Obviously you'll need a charger as big as your car to do that, charge cables as big as your legs, and i don't see the point to be able to charge at 10 000 C. This translate to a charge duration of about a third of a seconde...

At this amount of instantaneous power available, imagine the result of a short, internal or external...

Could be interesting for new destruction arms, but for our use where 40C discharge current and 6C charging is high enough even for acro fly it's not that usefull...

Obviously we need more energy density, more power density is not so useful for us even if some improvements at this level could help a bit for high performances applications and a better cycle life.

Olivier

Comment

You need to be a member of DIY Drones to add comments!

Join DIY Drones

© 2019   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service