Schematic Illustration (IMAGE) Science China Press Caption (a) Schematic illustration of charge-discharge voltage profiles of the carbon anode and Na0.9Cu0.22Fe0.30Mn0.48O2 cathode, respectively. Electrochemical performance of the carbon anode//Na0.9Cu0.22Fe0.30Mn0.48O2 the full cell, (b) Charge-discharge curves, (c) Rate capability and (d) Cycling performance. Credit ©Science China Press Usage Restrictions Use with credit. 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.