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Self-charging battery developed by Georgia Tech, uses your movement to recharge

Posted: , by Alan F.

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Self-charging battery developed by Georgia Tech, uses your movement to recharge
A look inside the self-charging cell

A look inside the self-charging cell

Imagine one day connecting your cellphone to a wearable battery that recharges from your movement. That might not be so far in the future as you think as researchers at Georgia Tech have come up with a method that even recharged a lithium-ion coin-sized battery placed inside the sole of a shoe. How does this all work? Thanks for asking. The usual dividers between electrodes have been replaced with a polyvinylidene difluoride film that uses piezoelectrics to recharge the battery by adding pressure to that small gap. This all works without any outside voltage being added to the mix which means that your own movement creates the pressure required to recharge the cell. The researchers came up with the battery inside the shoe test to prove how the pressure of each footstep on the shoe was able to power up the battery.

The battery is not yet close to be mass-produced and the researchers need to raise the power of the battery by figuring out how to apply more pressure to the cell using more squeezable piezoelectrics. Let's hope with the Yellow Jackets football season almost upon us, that the guys in the lab keep their eyes on the prize and work on perfecting this instead of getting distracted by what's happening on the gridiron.

source: Phys.org via Engadget

20 Comments
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posted on 19 Aug 2012, 08:12 5

1. rihel_95 (Posts: 192; Member since: 21 Mar 2012)


WTF! this means future phones are to be carried in boots, not pockets.
I love The Rock "Boots To A**es"

posted on 19 Aug 2012, 08:16 5

2. microsoftnokiawin (Posts: 879; Member since: 30 Mar 2012)


i would actually pay whatever price for that

posted on 19 Aug 2012, 08:21 5

3. sarb009 (Posts: 282; Member since: 15 Jun 2011)


It means its a lie," These boots are made for walking and that's just they will do " ?

posted on 19 Aug 2012, 16:37

15. denied911 (banned) (Posts: 361; Member since: 31 May 2012)


watch "kinky boots" movie

posted on 19 Aug 2012, 08:31 12

4. itiswhatitis (Posts: 421; Member since: 23 Jan 2012)


Decided not to read after 'polyvinylidene difluoride'

posted on 19 Aug 2012, 08:47 5

5. phljcnth (Posts: 254; Member since: 30 Apr 2012)


I just hope future charging will not require me to put any devices in my shoe.

posted on 19 Aug 2012, 08:51 1

6. OpTiMuS_BlAcK (Posts: 411; Member since: 04 May 2012)


Yay no more Shake to Charge :D

posted on 19 Aug 2012, 09:00 8

7. Savage (unregistered)


One word of advice to the researchers at Georgia Tech- PATENT IT AS SOON AS YOU CAN BEFORE ANY STUPID-ASS COMPANY CLAIMS WE THOUGHT OF IT BEFORE.

On the other hand, it's a cool piece of breakthrough. Nice job! Would love it to come in mainstream use.

posted on 19 Aug 2012, 14:54

14. Synack (Posts: 658; Member since: 05 Jul 2011)


Can't help but think of Apple when the words patent and lawsuit comes to mind.

posted on 19 Aug 2012, 17:15

16. Savage (unregistered)


Naah man, I ain't digging at Apple. I said it because the tech guys invented this so they have a right to patent this. No one else. If any company buys or claims these, we all know what's gonna happen. >.

posted on 19 Aug 2012, 09:09 3

8. darktranquillity (Posts: 284; Member since: 28 Feb 2012)


Battery that recharges with movement, battery that recharges in 2 minutes, solar battery......
But none of these gets implemented:-(

posted on 19 Aug 2012, 09:29

9. wendygarett (unregistered)


Yay :)

posted on 19 Aug 2012, 10:18 1

10. khmer (Posts: 92; Member since: 21 Jun 2012)


Apple will not get this patent.

posted on 19 Aug 2012, 11:49 2

11. maryaaadil (Posts: 146; Member since: 07 Apr 2012)


I think this is a good idea for charging an external battery pack or something like that cause right place for my note is in my pockets.........

posted on 19 Aug 2012, 13:19 4

12. Seannyc (Posts: 59; Member since: 21 Jul 2012)


I think they created this battery to counter obesity rate in the USA. Maybe now people will exercise XD

posted on 19 Aug 2012, 14:21 1

13. Stuntman (Posts: 707; Member since: 01 Aug 2011)


This is the reason Maxwell Smart has a shoe phone.

posted on 19 Aug 2012, 20:10

18. DFranch (Posts: 135; Member since: 20 Apr 2012)


You beat me to it.

posted on 19 Aug 2012, 19:13 1

17. Glim12808 (Posts: 391; Member since: 26 Oct 2011)


If charging is done through piezoelectricity, then it's the application of manual stress that creates the charging and not movement of walking per se. Its not the movement of walking but the pressure applied on the battery when you step on it that creates the charge.

posted on 19 Aug 2012, 20:16

19. Glim12808 (Posts: 391; Member since: 26 Oct 2011)


Come to think of it, I believe we do more sitting than walking. We sit in the office, at school, in cars and school buses, in restaurants and cafeterias, at dinner tables, in front of tv sets at night, or computers, or playing XBox, or doing school work, or watching movies, or just hanging out. Maybe it's more efficient to invent a contraption we can attach to our butts to apply piezoelectricity on the battery when we're sitting! LOL!

posted on 19 Aug 2012, 20:20

20. dmckay12 (Posts: 243; Member since: 25 Feb 2012)


I plan on going there for grad school.

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