Metabolism= Peeeece of mind

Scientists in Singapore have developed a battery powered by urine. Researchers at the Institute of Bioengineering and Nanotechnology created the credit card-size battery as a disposable power source for medical test kits. Ki Bang Lee and his colleagues have designed a disposable battery on a chip that is activated by biofluids, aka urine, blood, and potentially even semen. All this stuff in our bodies is potential energy! All these fluids contains ions which allow the electricity-producing chemical reaction to take place in the battery.

This potentially low-cost biodegradable battery is not that complex to fabricate. Lee and his colleagues soaked a piece of paper in a solution of copper chloride and sandwiched it between strips of magnesium and copper. This sandwich was then laminated between two sheets of transparent plastic. When a drop of urine is added to the paper through a slit in the plastic, a chemical reaction takes place that produces electricity. (Electrici-pee!)

This little prototype 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. This technoloy can be used to power laptops, mp3 players, lightbulbs, whatever potentially! imagine all the energy that has been wasted! No more black outs in NYC! Everybody Pee!

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