Electronic-structure regulation enhances K2NiF4-type cathode performance for protonic ceramic fuel cells (IMAGE)

Tsinghua University Press

Electronic-structure regulation enhances K2NiF4-type cathode performance for protonic ceramic fuel cells

Caption

Coordinated regulation of the d-band center and d-p orbital alignment gives LSFO a smaller Fe 3d-O 2p energy separation than LSMO, favoring oxygen-defect formation, hydration-related proton incorporation, proton migration, and oxygen reduction kinetics. DFT calculations and experimental transport measurements support these electronic structure advantages, which ultimately translate into substantially higher power output of LSFO-based PCFCs at 550-700 °C.

Credit

Journal of Advanced Ceramics, Tsinghua University Press

Usage Restrictions

News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only.

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.