Cell Phone charged by Coke or Pepsi

A Chinese designer Daizi Zheng came up with the idea of a cell phone powered by sustainable energy sources. She designed a battery that uses enzymes generate electricity from carbs. That way she can use sugary drinks like Coke or Pepsi to charge the battery. Better still, the by-products of the charging process are just water and oxygen!

As a side-benefit, this battery is more efficient. It can last 4 times as long as a standard lithium battery on a full charge. And the phone is biodegradable.