'Fuel battery' could take cars beyond petrol

13:11 25 July 2008
NewScientist.com news service
Colin Barras

A new approach to storing electrical energy can store more energy than gasoline in the same volume, and could help extend the range of electric vehicles. But some experts say other approaches are more practical.

The biggest technological hurdle facing electric vehicles is their range. Even the best rechargeable batteries cannot match the density of energy stored in a fuel tank.