It’s a sunlight-absorbing paint developed by RMIT researchers that produces hydrogen fuel from solar energy and moist air. Even a brick wall could potentially be turned into an energy-harvesting form of real estate, says lead researcher Torben Daeneke.
“Our new development has a big range of advantages,” Daeneke told Science Daily. “There’s no need for clean or filtered water to feed the system. Any place that has water vapor in the air—even remote areas far from water—can produce fuel. … This system can also be used in very dry but hot climates near oceans. The sea water is evaporated by the hot sunlight, and the vapor can then be absorbed to produce fuel. This is an extraordinary concept, making fuel from the sun and water vapor in the air.”
Source: “Solar Paint Offers Endless Energy From Water Vapor,” Science Daily