Yttria-stabilized zirconia (YSZ) is one of the primary choices for the electrolyte material in solid oxide fuel cells (SOFC), due to its excellent ionic conductivity at high temperatures. Nevertheless, such performance is usually limited by the ionic conductivity at grain boundaries, which is at least two orders of magnitude lower than that of bulk [1]. As a result, many studies have been perfo...

The sensing characteristics of a yttria-stabilized zirconia (YSZ)-based sensor utilizing a NiO sensing-electrode (SE) towards toluene (C(7)H(8)) and interfering gases (C(3)H(6), H(2), CO, NO(2) and C(2)H(5)OH) were evaluated with a view to selective C(7)H(8) monitoring in indoor atmospheres. The fabricated YSZ-based sensor showed preferential responses toward 480 ppb C(2)H(5)OH, rather than the...

In solid oxide fuel cells (SOFCs) and electrolysis (SOECs), the substantial performance degradation of nickel (Ni) - yttria-stabilized zirconia (YSZ) electrode has been a growing challenge for commercialization. The microstructure Ni-YSZ is not stable during long-term operation due to Ni phase redistribution. present study, operando observations patterned film electrodes under SOFC, SOEC revers...

Thermal barrier coatings (TBCs) prolong the durability of gas turbine engine components and enable them to operate at high temperature. Several degradation mechanisms limit TBCs during their service. Since atmospheric plasma spray (APS) processed 7–8 wt.% yttria stabilized zirconia (YSZ) widely utilized for applications are susceptible erosion damage, this work aims evaluate influence porosity ...

Metal sulfate formation is one of the major challenges to the emission aftertreatment catalysts. Unlike the incredibly sulfation prone nature of Pd to form PdSO4, no experimental evidence exists for PtSO4 formation. Given the mystery of nonexistence of PtSO4, we explore PtSO4 using a combined approach of an evolutionary algorithm based search technique and quantum mechanical computations. Exper...

In this study, the effect of a thermal barrier coating with yttria-stabilized zirconia (YSZ) and aluminum silicate (Al2O3·SiO2) alongside an NiCrAl bond coat on engine performance emission analysis was evaluated by using conventional diesel pure palm oil biodiesel. These materials were coated piston alloy via plasma spray coating. The findings demonstrated that YSZ presented better performances...

Ni coarsening in the Ni/yttria-stabilized zirconia (YSZ) fuel electrode of solid oxide cells (SOCs) is a major cause long-term performance degradation. Phase-field modeling powerful tool for studying complex 3D structures SOC electrodes. In this work, we present study aimed at validating phase-field model, comparing simulation results with time-dependent ex-situ tomographic data. Three equilibr...

This paper describes a new multilayer TBC that incorporates a 10 μm-thick oxygen barrier layer of yttrium–aluminum garnet (YAG) into a typical YSZ TBC system. The thermal conductivity of as-sprayed YAG/YSZ coatings was reduced due to excessive porosity and amorphous areas in the YAG layer. After long-term heat treatments, the conductivity of the multilayer was unaffected by the presence of YAG....

Crystal orientation is the key aspect of epitaxially grown ceramic thin films because it significantly affects their properties. In this study, evaluation thin-film using scanning transmission electron microscopy moiré fringes (SMF) demonstrated. The SMF result from combination crystal lattice in bright-field image and raster scanned beam. As reflect against lines, possible to observe distribut...

The objective of this paper is to manufacture free-standing solid oxide cells (SOCs) through the atmospheric plasma spray process (APS), without aid a metallic support nor need for post-process heating treatment. A five-layered cell was fabricated. Fused and crushed yttria-stabilized zirconia (YSZ) powder in 5–22 μm particle size range used order achieve dense electrolyte layer, yet still permi...