(IMAGE) Science China Press Caption (a) Schematic d-band model and (b) energy band diagrams. (c) HER volcano pot. (d) Schematic illustration of this work. Credit ©Science China Press Usage Restrictions Use with 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.