bond-covalent-bond writes: Fuel cells have been hailed as saviours of the environment, because they can cleanly and efficiently turn hydrogen and other fuels into electricity. But so far this technology has been hobbled by the high cost of the platinum catalysts needed to make it work. Now a new type of fuel cell based on carbon nanotubes (doped with nitrogen) promises to be much cheaper, as well as more compact and more efficient.
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