This document discusses paper batteries, which are flexible, ultra-thin energy storage devices made by combining carbon nanotubes. Paper batteries can be folded or cut without losing efficiency and stacking increases power output. Early prototypes can produce 2.5 volts from a postage stamp-sized sample. Widespread use will rely on lower-cost manufacturing, but paper batteries have potential applications in medical devices and as biodegradable power sources.

1. PAPER BATTERY

3. CONTENT
O INTRODUCTION
O HISTORY OF PAPER BATTERIES
O DEVELOPMENT
O DUARABILITY
O USES
O CONCLUSION
O REFERENCES

4. Introduction
O A Paper battery is the flexible, ultra thin
energy storage and Production device.
O Formed by combining carbon Nano tubes.
O Acts as both high energy battery and
super capacitor.
O Non-toxic, flexible paper batteries have
the potential to power the next generation
of electronics.

5. O Paper batteries may be folded or otherwise
shaped for different applications.
O No loss of integrity or efficiency
O Cutting one in half halves its energy
production
O Stacking them multiplies power output.
O Early prototypes of the device are able to
produce 2.5 volts of electricity from a sample
the size of a postage stamp.

6. History of Paper Batteries
O Widespread commercial deployment of
paper batteries will rely on the
development of more inexpensive
manufacturing techniques.
O A paper battery powered by ionic solutions
is developed in 2005.
O Specialized paper batteries could act as
power sources for any no. of devices.
O Biodegradable.

9. DEVELOPMENT
O In 2005 RPI & MIT, researchers in Singapore
developed a paper battery powered by ionic
solutions.
O NEC has also invested in R&D into paper
batteries.
O First development of paper batteries has been
done by the scientists at Rensselaer
polytechnic institute.
O The development of paper batteries begins
with growing the nanotubes on a silicon
substrate & then impregnating the gaps in the
matrix with cellulose.

11. DURABILITY
O The spacer is an integrated combination
of spacer, & electrodes.
O The components are molecularly attached
to each other.
O The carbon Nano tube print is embedded
in the paper,
O Electrolyte is soaked into the paper
O The end result is a device that looks ,
feels and weighs the same as paper.

12. USES
O Light weight and low cost.
O Ability to use electrolytes in blood.
O Useful for medical devices such as
pacemakers.
O Medical uses are particularly attractive.
O They do not contain any toxic materials .
O Biodegradable.

13. Conclusion
 The commercial applications may be a long
way away.
 Nano tubes are still relatively expensive to
fabricate.
O The voltage could be large enough to
POWER a CAR.
O We can design the Nature friendly
equipment's that can cause no harm to the
nature.
O Hence we can protect our nature from
GLOBAL WARMING.

14. References
O “Beyond Batteries: Storing Power in a
sheet of Paper”. RPI. August 13,2007.
Retrieved 2008-01-15.
O “Paper battery offers future power”. BBC
News. August 14, 2007. Retrieved 2008-
01-15.