Schematic illustration of charge-carrier distributions at the interfaces of GCCCO-GDC, GCCCO-LSCF, and GCCCO-BCZYYb composite air electrodes. (IMAGE)

Seoul National University College of Engineering

Schematic illustration of charge-carrier distributions at the interfaces of GCCCO-GDC, GCCCO-LSCF, and GCCCO-BCZYYb composite air electrodes.

Caption

Left: At the GCCCO-GDC interface, only an oxygen-vacancy region forms. Center: At the GCCCO-LSCF interface, only a hole-rich region forms. Right: At the GCCCO-BCZYYb interface, oxygen vacancies and holes form simultaneously, creating a diffuse electrical double layer. This demonstrates that a balance between ionic and electronic conductivity is key to superior oxygen-ion exchange characteristics.

Credit

© Nature Energy, originally published in Nature Energy

Usage Restrictions

Reuse of this image is restricted and requires permission from the publisher.

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.