(IMAGE) Yokohama National University Caption Repulsive electrostatic interaction leads to Ni ion migration suppression and improved reversibility without cobalt (Co) ions. Credit Yokohama National University Usage Restrictions The image may only be used with appropriate caption or credit. 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.