'Artificial leaf' faces economic hurdle
Described in Science last year by a team led by Dan Nocera at the Massachusetts Institute of Technology, the catalyst-coated wafer is a silicon version of a photosynthesizing leaf: it turns sunlight into storable fuel by splitting water into oxygen and hydrogen. But Sun Catalytix, the company founded in Cambridge off the back of Nocera's work, says that it won’t be scaling up the prototype for field tests. The device offers few savings over other ways to make hydrogen from sunlight, the company says.
Source: Nature News, 23 May 2012