Why Lithium Metal Batteries Fail (IMAGE) University of California - San Diego Caption SEM image of the cross section of a columnar microstructure, which leads to high Coulombic efficiency. Credit Meng lab/Nature Usage Restrictions Please credit: Meng lab/Nature 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.