08 May '11, 2pm

The Future For Hydrogen-Fueled Fuel Cell Cars | The Good Human: Fuel cell cars can run on infinitely renewable h...

According to Richard Gilbert, co-author of the book, Transport Revolutions: Moving People and Freight without Oil, another big issue for hydrogen-powered fuel cells is their energy inefficiency . Creating hydrogen gas by splitting water molecules via electrolysis ends up using up about half of the energy it creates. Another half of the resulting energy is taken up by the conversion of hydrogen back into electricity within fuel cells. “This means that only a quarter of the initially available energy reaches the electric motor,” reports Gilbert. (Making hydrogen by reforming natural gas is also highly inefficient and relies on a fossil fuel from the get-go.) Such losses in conversion don’t stack up well against, for instance, recharging an electric vehicle (EV) like the Nissan Leaf or Chevy Volt from a wall socket—especially if the electricity can be initially generated from...

Full article: http://www.thegoodhuman.com/2011/05/08/the-future-for-hyd...

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