Maria-Chan_BatteryIconInterface (IMAGE) DOE/Argonne National Laboratory Caption Boundaries within cathode materials are undesirable because they lead to performance degradation. Credit (Image by Maria Chan/Argonne National Laboratory.) Usage Restrictions Original Content License Original 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.