Toward a Better Battery (IMAGE) University of California - Santa Barbara Caption An illustration depicts hydrogen-induced degradation of a sodium-ion battery: (1) When hydrogen is present (circled in black), (2) an Mn atom (purple) can move from the MnO2 layer to the Na layer (yellow); (3) Mn can then move within the Na layer, and will be lost. Credit Hartwin Peelaers 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.