Taking That Fork in the Solar Road

Dean Sigler Diesel Powerplants, Electric Powerplants, Sustainable Aviation Leave a Comment

Kyoung-Shin Choi, a chemistry professor at the University of Wisconsin-Madison, and postdoctoral researcher Tae Woo Kim combined forces to come up with a two-pronged approach for producing stored energy from mere sunlight. Many researchers take the familiar path of using expensive materials to extract the greatest percentage of energy from solar cells, but others use low-cost, less efficient organic materials spread across a greater area to get the same results.  Choi and Kim, though, decided that selecting two different low-cost materials could give greater results – something a more single-path approach would miss. As their U of W report states, “Generating electricity is not the only way to turn sunlight into energy we can use on demand. The sun can also drive reactions to create chemical fuels, such as hydrogen, that can in turn power cars, trucks and trains.” The expensive semiconductors and catalysts normally used to transform sunlight to fuels are “far too expensive” to make competitive sun fuel possible, …