Fluorenone researcher (IMAGE) DOE/Pacific Northwest National Laboratory Caption 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 for the grid. Credit (Photo by Andrea Starr | Pacific Northwest National Laboratory) Usage Restrictions Please use credit info. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.