Electrolyzers depend on rare, difficult-to-work-with and sometimes toxic metals, but the method developed by Chris Berlinguette and Simon Trudel uses metals as common as rust. It delivers results comparable to current techniques but costs about 1,000 times less.
This seems like it could make the use of fuel cells common place with an economical fuel source. If this pans out, what other hurdles might need addressing to get a fuel cell into every home?
Save energy: Drive a smaller shell.