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

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

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20 Comments

1. rihel_95

Posts: 305; Member since: Mar 21, 2012

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

2. microsoftnokiawin

Posts: 1268; Member since: Mar 30, 2012

i would actually pay whatever price for that

3. sarb009

Posts: 322; Member since: Jun 15, 2011

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

15. denied911

Posts: 361; Member since: May 31, 2012

watch "kinky boots" movie

4. itiswhatitis

Posts: 423; Member since: Jan 23, 2012

Decided not to read after 'polyvinylidene difluoride'

5. phljcnth

Posts: 549; Member since: Apr 30, 2012

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

6. OpTiMuS_BlAcK

Posts: 418; Member since: May 04, 2012

Yay no more Shake to Charge :D

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.

14. Synack

Posts: 688; Member since: Jul 05, 2011

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

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. >.

8. darktranquillity

Posts: 285; Member since: Feb 28, 2012

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

9. wendygarett unregistered

Yay :)

10. khmer

Posts: 95; Member since: Jun 21, 2012

Apple will not get this patent.

11. maryaaadil

Posts: 146; Member since: Apr 07, 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.........

12. Seannyc

Posts: 59; Member since: Jul 21, 2012

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

13. Stuntman

Posts: 843; Member since: Aug 01, 2011

This is the reason Maxwell Smart has a shoe phone.

18. DFranch

Posts: 505; Member since: Apr 20, 2012

You beat me to it.

17. Glim12808

Posts: 394; Member since: Oct 26, 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.

19. Glim12808

Posts: 394; Member since: Oct 26, 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!

20. dmckay12

Posts: 243; Member since: Feb 25, 2012

I plan on going there for grad school.

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