Peak Oil News: Unprecedented Efficiency In Producing Hydrogen From Water

Wednesday, December 06, 2006

Unprecedented Efficiency In Producing Hydrogen From Water


Scientists are reporting a major advance in technology for water photooxidation --using sunlight to produce clean-burning hydrogen fuel from ordinary water.

Michael Gratzel and colleagues in Switzerland note that nature found this Holy Grail of modern energy independence 3 billion years ago, with the evolution of blue-green algae that use photosynthesis to split water into its components, hydrogen and oxygen.

Gratzel is namesake for the Gratzel Cell, a more-efficient solar cell that his group developed years ago. Solar cells produce electricity directly from sunlight. Their new research, scheduled for publication in the Dec. 13 issue of the weekly Journal of the American Chemical Society, reports development of a device that sets a new benchmark for efficiency in splitting water into hydrogen and oxygen using visible light, which is ordinary sunlight.

Previously, the best water photooxidation technology had an external quantum efficiency of about 37 percent. The new technology's efficiency is 42 percent, which the researchers term "unprecedented." The efficiency is due to an improved positive electrode and other innovations in the water-splitting device, researchers said.


At 5:50 PM, December 06, 2006, Anonymous Anonymous said...

Okay! Now lets scale it up another 68% to make it's EROI break even then try to implement the change over to meet the demand of the multimillion barrels of crude a day that is used to meerly power the US automobile fleet.. Oh I just feel merry about it.. Almost like Christmas!!

At 6:03 PM, December 06, 2006, Blogger R2K said...

Oil sucks.


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