Trapping 2 (IMAGE) Rice University Caption Rice University engineers built full lithium-ion batteries with silicon anodes and an alumina layer to protect cathodes from degrading. By limiting their energy density, the batteries promise excellent stability for transportation and grid storage use. Credit Jeff Fitlow/Rice University Usage Restrictions None 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.