1
Blood Batteries

• By Brandon Brunelle

2
What is it?

• An energy source that can run off of an array of
  electrolytes including bodily fluids..
• safe
• ultrathin
• flexable
• durable

3
Needs

• The goal is to build a hybrid of a battery and
  super capacitor in one entity.
• Super capacitor
• Large discharge
• Electrolytes either aqueous or solid, are used
  to separate plates.
• Battery
• Electro chemical cells used to store and convert
  chemical energy

4
Technology

• Nanocomposite paper (CNT celluloseRTIL)
• Multiwalled nanatubules(MWNT) are grown on
  silicon substrate.
• Plant cellulose dissolved in RTIL is infiltrated
  into MWNT
• The resulting film is cleaned using ethanol and
  then set on dry ice to remove ethanol.
• On the order of 10 microns thick.
• Remarkable bending and twisting ability without
  deformation
• Cellulose is randomly porous anywhere between 45
  and 55nm between pores. Pore density can be
  increased or decreased.

5
Design

• MWNTs serve the purpose of electrodes.
• Cellulose acts as the insulator
• RTIL as the self sustaining electrolyte
• Two nanocomposites are used to create
  supercapacitor

6
Results

• Record breaking operating temperature of
  195K-423K
• Different aqueous and nonaqueous electrolytes
  were used.
• Device was tested at 77K
• The device was found to work when compounds such
  sweat and blood were used as the electrolyte
• Development of flexible lithium ion battery was
  also designed.

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Conclusion

• Uninteruptable durable energy source
• Can be adapted to operate medical devices
• Cost effective
• Good future ahead

8
Sources

• Published online before print August 15, 2007,
  doi 10.1073/pnas.0706508104 PNAS August 21, 2007
  vol. 104 no. 34 13574-13577
• http//www.pnas.org/content/104/34/13574.full
• http//www.howstuffworks.com/framed.htm?parentblo
  od-battery.htmurlhttp//news.rpi.edu/update.do?a
  rtcenterkey2280
• http//batteryuniversity.com/partone-8.htm