According to EcoFriend.com
Researchers at the Ohio University are trying to solve the riddle by generating hydrogen from a cheap and readily available waste – urine. These researchers believe that electrolyzing urine for hydrogen is easy as compared to generating hydrogen from water as in urine, hydrogen molecules aren’t as tightly held as in water. The system breaks down urea at a voltage of just 0.37 volts, which is significantly less than the 1.23 volts required to split water.