Power Your Car With Pee

A scientist at Ohio University has developed a catalyst capable of extracting hydrogen from urine. That’s right. Urine. Now you can fill one tank while draining another.

Garardine Botte claims the device uses significantly less energy than is needed to extract hydrogen from water and says it could power hydrogen fuel cell vehicles in the near future. Her electrolyzer uses a nickel-based electrode to extract hydrogen from urea (NH2)2CO, the main component in urine. Hydrogen is less tightly bound to the nitrogen in urea than to the oxygen in water, so the electrolyzer needs just 0.37 volts across the cell to oxidize the urea, according to Botte. That’s less than half the amount of energy in an AA battery and considerably less than the 1.23 volts needed to split water.