A demonstration from the Sony company shows off a much more useful product - battery that can 'digest' waste paper and turn it into energy.
As we know In 2007, Sony demonstrated a Walkman that used a similar bio battery that generated electricity by "digesting" food, just like humans do.
But a new demonstration at Eco-Products 2011 in Tokyo shows off a much more useful product, the Daily Mail reported.
The prototype - on show at Eco-Products 2011 in Tokyo, shows how it could be possible to use enzymes to 'break down' waste paper into a fuel we can use. The prototype generates enough energy to power a (very) small fan.
A digestive enzyme, cellulase, 'breaks down' the cellulose in paper into glucose, a sugar that Sony's 'bio batteries' can use as fuel.
The company claims that the paper-powered battery can generate electricity up to 18wh which is enough to power a (very) small fan. The process is much more like the action of a digestive system, said Chisato Kitsukawa, a public relations manager at Sony. "This is the same mechanism with which termites eat wood to get energy," Kitsukawa was quoted as saying.
The company's bio batteries are now so advanced that the company showed off one thin enough to fit inside a greetings card alongside the paper-digesting battery.
It uses fruit juice for fuel, and can generate enough power to play a melody from inside the car.
As it stands, though, the 'paper-eating' battery can only generate a very small amount of power.
Although Kitsukawa said. It is currently sufficient to run digital music players but not powerful enough to replace commonly used batteries, he added.
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