http://www.suncatalytix.com/about.html

They have developed a catalyst which will allow water to be broken
apart into hydrogen and oxygen using solar energy. The hydrogen and
oxygen can be recombined in a fuel cell to produce electricity (proven
technology), stored for later consumption (potentially solving the
night time and cloudy day problem), or the hydrogen can be burned
immediately as fuel for a combustion engine.

They have an all star technology team and significant venture capital
funding. Let's hope they can get it to market in a reasonable time
and price.