Generate hydrogen quickly and easily without those costly 6V batteries! Using H20 Electrolysis, generate hydrogen (and chlorine gas) with only water! The setup will take only 5 to 10 minutes, and can be safely left running overnight. Generate bottles of hydrogen with ease! This Instructable is not only my first... it is also for the Science Fair contest. ENJOY!!!
http://www.instructables.com/id/Generating-Hydrogen...-without-Batteries/