self charging hybrid power cell batteries
dec 06, 2012
self charging hybrid power cell batteries


self-charging hybrid power cell batteries

 

 

researchers at georgia tech have developed a self-charging power cell that directly converts mechanical energy to chemical energy,
storing the power until it is released as electrical current. by eliminating this process for charging a battery, the new hybrid
generator-storage cell utilizes mechanical energy more efficiently than systems using separate generators and batteries.
the system is a piezoelectric (charge that accumulates in certain solid materials) membrane that drives lithium ions from one
side of the cell to the other when the membrane is deformed by stress.

 

the lithium ions driven through the polarized membrane by the piezoelectric potential are directly stored as chemical energy
using an electrochemical process. by harnessing this type of compressive force, such as a shoe heel hitting the pavement from
a person walking, the power cell can generate enough current to power a small calculator. with time and research, this process
can potentially be implemented for military use for charging equipment or in sustainable urban planning for harvesting energy
in roads from vibrating and mechanical movements such as the intelligent interactive highway by studio roosegaarde + heijmans.

 

 

components of the self-charging power cell

 

 

consisting of a cathode made from lithium-cobalt oxide and an anode consisting of titanium dioxide nanotubes grown above
a titanium film, the new technology uses two electrodes separated by a membrane PVDF film, which generates a piezoelectric 
charge when placed under strain. when the power cell is mechanically compressed, the PVDF film generates a charge capable 
of driving the lithium ions from the cathode side to the anode side. the energy is then stored in the anode as lithium-titanium oxide.

 

 

 zhong lin wang (left) sihong wang with the power cell components

 

via

comments policy
LOG IN VIA
login with designboom
designboom's comment policy guidelines
generally speaking, if we publish something, it's because we're genuinely interested in the subject. we hope you'll share this interest and if you know even more about it, please share! our goal in the discussion threads is to have good conversation and we prefer constructive opinions. we and our readers have fun with entertaining ones. designboom welcomes alerts about typos, incorrect names, and the like.
the correction is at the discretion of the post editor and may not happen immediately.

what if you disagree with what we or another commenter has to say?
let's hear it! but please understand that offensive, inappropriate, or just plain annoying comments may be deleted or shortened.

- please do not make racist, sexist, anti-semitic, homophobic or otherwise offensive comments.
- please don't personally insult the writers or your fellow commenters.
- please avoid using offensive words, replacing a few letters with asterisks is not a valid workaround.
- please don't include your website or e-mail address in your comments for the purpose of self-promotion.
- please respect jury verdicts and do not discuss offensively on the competition results
(there is only one fist prize, and designboom usually asks renown professionals to help us to promote talent.
in addition to the awarded designs, we do feel that almost all deserve our attention, that is why we publish
the best 100-200 entries too.)

a link is allowed in comments as long as they add value in the form of information, images, humor, etc. (links to the front page of your personal blog or website are not okay). unwelcome links (to commercial products or services of others, offensive material etc. ) will be redacted. and, ... yes, spam gets banned. no, we do not post fake comments.

product library