Energy-filtered transmission electron microscopy images are acquired during the reduction of a NiO-YSZ composite in H2 up to 600 °C. Temperature-resolved quantitative information about both chemistry and structure is extracted with nm spatial resolution from the data, paving the way for the development of detailed reduction models.

Microstructural characteristics of porous LSM/YSZ composite cathodes greatly influence the performance of solid oxide fuel cells. The triple phase boundaries, for example, account for a significant portion of the electrochemically active sites in these porous composite cathodes. Nonetheless, experimental characterization of the relevantmicrostructural attributes has been problematic due to lack...

Increasing densities of (electrode–electrolyte-pore) triple phase boundaries (TPBs) / reaction sites enhance performances solid oxide electrochemical reactors (SOERs) in both fuel cell (SOFC) and electrolyser (SOE) modes. Inkjet 3D printing is capable construction ceramic microstructures on support layers, enabling fabrication SOERs with enhanced active area to geometric ratios, thereby up-scal...

SOFC solid electrolytes are known for their ionic conductivity characteristics, which increase with increasing operating temperature. Using COMSOL Multiphysics numerical simulation, analysis of power performance yttria-stabilized zirconia (YSZ) and lithium sodium carbonate – gadolinium-doped ceria ({LiNa}2CO3-GDC) was conducted to determine the potential these in application SOFC. The YSZ diffe...

Repeating boundaries: the buried interfaces in artificial heterostructures produced by sequential deposition of nanosized units are critical to their properties. With density functional theory it was shown that in Y(2)O(3):ZrO(2) (YSZ) and SrTiO(3) (STO) heterostructures reconstruction of the interfaces between the component units is required to access the most favorable structure.

Mn(1.5)Co(1.5)O(4) spinel oxide as a cathode or one component of a composite cathode presents no visible reaction with an Y(2)O(3)-stabilized ZrO(2) electrolyte. The low electrode polarization resistances and good performance compared with traditional Sr-doped LaMnO(3)-YSZ composite cathodes imply promising application for the next generation of intermediate-temperature solid oxide fuel cells.

Conventional and nanostructured YSZ coatings were deposited on the IN-738 Ni super alloy by the atmospheric plasma spray technique. The oxidation was measured at 1100°C in an atmospheric electrical furnace. According to the experimental results the nanostructured coatings showed a better oxidation resistance than the conventional ones. The improved oxidation resistance of the nanocoating could ...

In the present work, six-layered (Zirconia/Nickel) functionally graded materials were fabricated via powder metallurgy technique (PMT). The microstructure, fracture surface and the elemental analysis of the prepared components were studied, and their linear shrinkage, electrical conductivity, fracture toughness and Vickers hardness were evaluated. The results show that the linear shrinkage of t...