Researchers have devised a more efficient, more reliable potassium-oxygen battery, a step toward a potential solution for energy storage for the grid. In a study published in the April issue of the journal Batteries and Supercaps, researchers from Ohio State University detailed their findings related to the construction of a potassium-oxygen battery’s cathode. (See image above of Paul Gilmore and Vishnu-Baba Sundaresan). The findings,