Phosphoric Acid Fuel Cells Science, Engineering, and the Hydrogen Economy

Fuel cells occupy a peculiar place in the modern energy conversation. They are simultaneously the oldest electrochemical power technology—older than the internal combustion engine—and one of the most futuristic. Sir William Grove built the first in 1839; more than a century later, alkaline cells flew to the Moon, and phosphoric acid cells became the first fuel cells to earn a living on the ground,...