Lithium-Polysulfide Flow Battery (image) DOE/SLAC National Accelerator Laboratory Caption SLAC/Stanford's Yi Cui holds a lab demonstration of his group's new lithium-polysulfide flow battery contained in a simple flask. The design could serve as a model for a low-cost, long-life battery that enables solar and wind energy to become major suppliers to the electrical grid. Credit Matt Beardsley, SLAC National Accelerator Laboratory Usage Restrictions Please provide credit if possible. 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.