Field Effect Conductivities of P-I-N Heterostructure Films in Fuel Cells.

Ionic conductivity enables the technologies of fuel cells, electrolysis cells, and batteries. However, the ambiguous origins of the extraordinary ionic conductivity impede its implementation in heterostructure films for the devices. Here, we disclosed that the extraordinary ionic and electronic conductivities come from field effect.

Enhanced oxygen reduction activity and solid oxide fuel cell performance with a nanoparticles-loaded cathode.

Reluctant oxygen-reduction-reaction (ORR) activity has been a long-standing challenge limiting cell performance for solid oxide fuel cells (SOFCs) in both centralized and distributed power applications. We report here that this challenge has been tackled with coloading of (La,Sr)MnO3 (LSM) and Y2O3 stabilized zirconia (YSZ) nanoparticles within a porous YSZ framework. This design dramatically improves ORR activity, enhances fuel cell output (200-300% power improvement), and enables superior stability (no observed degradation within 500 h of operation) from 600 to 800 °C.

A ternary cathode composed of LSM, YSZ and Ce0.9Mn0.1O2-δ for the intermediate temperature solid oxide fuel cells.

The YSZ electrolyte fuel cell with a ternary cathode composed of LSM-YSZ-Ce(0.9)Mn(0.1)O(2-δ) exhibits ca.