Researchers Make Hydrogen From Humidity In Air

DETROIT – The most sustainable way to make hydrogen fuel is to split water using renewable electricity—but that requires access to freshwater. Now, researchers have reported a way to make hydrogen fuel from just humidity in the air.Their electrolyzer extracts moisture from air and splits it into renewable powered electrolysis to create hydrogen. It is the first such electrolyzer to produce high purity (99 percent) hydrogen from air that has a little as 4 percent humidity, says Gang Kevin Li, a professor of chemical engineering at the University of Melbourne, in Australia. The success could open up the possibility of producing hydrogen in semi-arid regions, which also have some of the highest solar- and wind-power potential.Tests of the prototype direct-air electrolyzer over 12 consecutive days showed that it could produce almost 750 liters of hydrogen a day on average per…

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