The Institute of Bioengineering and Nanotechnology in Singapore has developed a urine-activated laminated paper battery that “could be integrated with bioMEMS devices such as home-based health test kits providing a power source for the electronic circuit” (whatever that means). All I know is that it generates power from pee.
“The battery produced about 1.5 volts, the same as a standard AA battery, and runs for about 90 minutes. Researchers said the power, voltage, and lifetime of the battery can be improved by adjusting the geometry and materials used.”
“Urine contains many ions (electrically charged atoms), which allows the electricity-producing chemical reaction to take place in the urine battery. Other bodily fluids, such as tears, blood, and semen, would work easily as well to activate the battery.“
