biofluid powered batteries
DESCRIPTION
it is the one of the cheap and nature friendly batteryTRANSCRIPT
BIOFLUID-POWERED BATTERIES
BIOFLUID-POWERED BATTERIES
Seminar Report 2008-2009
Presented by ADARSH M ALEX Electrical & Electronics
VII Semester Roll No : 7303
BIOFLUID-POWERED BATTERIES
BIOFLUID-POWERED BATTERIES
Human body is the biggest natural miracle machine and different types of bio fluids like gas breathed out (i.e., carbon dioxide), night soil/stool and urine are major wastes byproducts of this machine. Today we can discuss about the paper battery that generates electricity from urine.
FabricationIn this battery, a
magnesium (Mg) layer and copper chloride (CuCl) in the filter paper are used as the anode and the cathode, respectively. A stack consisting of a Mg layer, CuCl-doped filter paper and a copper (Cu) layer sandwiched between two plastic layers is laminated into the paper batteries by passing through the heating roller at 120 °C.
Dimensions
The battery is just 1 millimeter thick and 60 by 30 mm across – slightly smaller than a credit card.
How does it work?
• Urine contains many ions (electrically charged atoms), which allows electricity-producing chemical reaction to take place in the urine battery. When a drop of urine is added to the paper through a slit in the plastic, a chemical reaction takes place that produces electricity.
How much does this rate in performance?
The urine-powered battery was able to generate a voltage of about 1.5 volts – with a corresponding power of 1.5 micro-watts – using just 0.2 milliliters of urine.
And if a second droplet of urine was added 15 hours after the battery was first activated, the replenished urine could generate still more electricity.
A Big Leap !!!
Recently, scientists successfully demonstrated batteries in series (half credit-card size) that power two LEDs and a electrical driving circuits. The half credit card-sized paper battery supply 3 volts for the circuit to switch LEDs on and off.
An Experimental Truth
Application
The test kit consists of a urine-activated battery, biosensors for disease detection, electric circuits (not shown in the above figure), and a display for showing test results. Introduced urine activates the battery and then the electricity from the battery powers the others. If somebody need a checkup, they could purchase a healthcare test kit from a pharmacy and do the test. These fully-integrated biochip systems have a huge market potential.
Biofluid-activated battery and biosensors are integrated into disposable credit card-sized biochips for healthcare diagnostic applications.
Conclusion
Though nature makes best use of these bio-fluid by-products, but scientists are always keen in making this type of technological use of these products.
Reference
Electronics For You Magazine.
http://www.kblab.biz