Graduate makes fizz-powered phone - graduate jobs

A graduate from London's Central Saint Martins College has developed a working prototype of a mobile phone handset powered by fizzy drinks.

Daizi Zheng made the fully biodegradable handset as part of a final university project for the Finnish mobile phone company Nokia.

A bio battery within the phone generates electricity using enzymes to catalyse the sugar in the soft drink and can run for up to four times longer than mobile batteries on the market today. No harmful materials are left behind when the product is thrown away as it is fully biodegradable.

Although bio batteries are being developed by a number of electronics companies, they are not expected to be available until approximately five years time.

Ms Zheng said: "At the time they wanted something to bring out within the next two years and thought my design was too futuristic."