08-12-2012, 05:02 PM
An Overview Of Battery Technology
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Battery
An electric battery is a device that stores chemical energy and makes it available in an electrical form.
Disadvantages:
The initial set-up costs will be higher, because of the additional amp hour capacity.
Also, these batteries are quite heavy (to 350 lb. per 2 volt cell)
require a well-supported area and special handling and transportation assistance.
PAPER BATTERY
A paper battery is a flexible, ultra-thin energy storage and production
device formed by combining carbon nanotube s with a conventional
sheet of cellulose-based paper.
A paper battery acts as both a high-energy battery and supercapacitor ,
combining two components that are separate in traditional electronics .
Early prototypes of the device are able to produce 2.5 volt s of electricity
from a sample the size of apostage stamp
Materials and Description
This energy storage device is based on two basic, inexpensive materials: carbon nanotubes and cellulose. Also an ionic liquid provides the third component: electrolyte. Engineered together, they form nanocomposite paper. It is as thin and flexible as a piece of paper—it can be twisted, folded, rolled and cut to fit any space without losing any of its energy. The paper battery can also be stacked to boost the total power output.
How it is made
To creat this paper you have to first dissolve the cellulose in the ionic liquid and then inflitrate the cellulose paper with aligned carbon nanotubes which form the uniform film.
Then it is solidified on dry ice, after this it is soaked in ethonal to remove the ionic liquid and dried in a vacume, which gives you your final product: Nanocomposite paper.
WORKING OF PAPER BATTERIES
The battery produces electricity in the same way as the conventional lithium-ion batteries
but all the components have been incorporated into a lightweight, flexible sheet of paper.
An early prototype of the device, just big enough to be held between thumb and forefinger,
kicks out 2.5 volts, enough juice to power a small fan
You can implant a piece of paper in the body and blood would serve as an electrolyte
The battery contains carbon nanotubes, each about one millionth of a centimetre thick,
which act as an electrode. The nanotubes are embedded in a sheet of paper soaked in ionic
liquid electrolytes, which conduct the electricity.
Conclusion
This energy storage device is cost-effective because the device can be able to be used in the smallest and most diversly designed electronics. Such as cell phones, mp3 players and medical equipment.
The researchers say that it can also be used in automobiles and aircraft. But it has a poor processibility, being that they it is particularly insoluble of infuseble. Lastly, the use of ionic liquid makes the device environmentally friendly; a major concern in nanotechnology.