E-Mail IMAGE: PNNL scientist Ruozhu Feng created a series of molecular engineering steps to cultivate fluorenone's energy-carrying capability, part of an effort at Pacific Northwest National Laboratory to develop new energy-storage technology... view more Credit: (Photo by Andrea Starr | Pacific Northwest National Laboratory) A compound used widely in candles offers promise for a much more modern energy challenge--storing massive amounts of energy to be fed into the electric grid as the need arises. Scientists at the U.S. Department of Energy's Pacific Northwest National Laborator...