Sodium Batteries for the Grid (IMAGE) DOE/Sandia National Laboratories Caption Sandia National Laboratories researchers Leo Small, back right, and Erik Spoerke, back left, observe as Martha Gross, front, works in an argon glove box on their lab-scale sodium iodide battery. This new kind of molten sodium battery could prove to be a lower-temperature, lower-cost battery for grid-scale energy storage. Credit Photo by Randy Montoya/Sandia National Laboratories Usage Restrictions With credit 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.