Researchers at Stanford University have weighed in with findings concerning nickel-coated silicon semi-conductors as electrodes in a split-water-into-hydrogen-and-oxygen operation. See the article in the Stanford Report. This relates to related work from MIT to which we linked on Friday, last.
Generating combustable fuel from water sounds too good to be true, but is the real deal. The key is making it economically competitive with various forms of fossil fuel.