Sony has recently introduced the paper-powered bio battery at Eco-Products 2011 in Tokyo. This eco-friendly battery uses a special enzyme called cellulase to change paper into glucose, which is needed to generate the electricity. The cellulase acts as a catalyst, so it can be reuse several times. The company claims that the paper-powered bio battery can generate up to 18Wh of electricity, which is equal to the amount of energy that can be generated by six AA batteries
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