Microstructure and mechanical properties of Ni/10mol% Sc2O3–1mol% CeO2–ZrO2 cermet anode for solid oxide fuel cells

Chen, Yan; Orlovskaya, Nina; Graule, Thomas; Kuebler, Jakob

doi:10.1016/j.jeurceramsoc.2012.10.003

Cited by 5 publications

(2 citation statements)

References 37 publications

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“…Thanks to the concept of heterogeneous materials, those complex functions can be achieved at the same time. The properties are adjusted by controlling the architecture of the materials systems, including dimension, fraction and distribution of the phases8910. However, the heterogeneity of the material system may lead to the loss of chemical stability under high temperature application.…”

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confidence: 99%

Visualizing the Structural Evolution of LSM/xYSZ Composite Cathodes for SOFC by in-situ Neutron Diffraction

Chen

Yang

Ren

et al. 2014

Sci Rep

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Thermal stability of composite cathodes for solid oxide fuel cells, the mixtures of (La0.8Sr0.2)0.95MnO3−δ (LSM) and (Y2O3)x(ZrO2)1−x (xYSZ, x = 3, 6, 8 and 10), is determined using in-situ neutron diffraction. Thanks to the most advanced high flux neutron source, our work highlights the visualization of the phase evolutions in heterogeneous material systems at high temperatures, along with the analysis of the diffusion activities of transition metal ions that reveal the reaction mechanism and kinetics. It is found that the tetragonal-to-cubic phase transition in YSZ at T > 900°C leads to a heterogeneous redistribution of Mn ions. The subsequent reaction of LSM and YSZ occurring at T > 1100°C is revealed as a three-stage kinetic process, yielding La2Zr2O7, SrZrO3 and MnO. The diffusion activities of Y, Mn and La ions in the heterogeneous systems at elevated temperatures are derived by the structural analysis, and the three-stage reaction of YSZ and LSM is found strongly correlated to ions' behaviors as functions of temperature.

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confidence: 99%

Visualizing the Structural Evolution of LSM/xYSZ Composite Cathodes for SOFC by in-situ Neutron Diffraction

Chen

Yang

Ren

et al. 2014

Sci Rep

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“…It serves as the site for electrochemical oxidation of the fuels. Generally, anode needs to be porous for the gas fuels to diffuse through; it has to be electron-conducting for the electrons produced from the electrochemical oxidations to travel from inner to outer layers and the current collectors; it has to be mechanically strong to withstand impacts from daily operation [6] [7]. Specifically, anode needs to be catalytically active for the specific desirable reactions to occur, and resistant to coke formations especially for operations on hydrocarbons [8][9] [10].…”

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confidence: 99%

Preparation and Characterizations of NiYSZ-based Anode for Solid Oxide Fuel Cells and Solid Oxide Electrolyser Cells

Troskialina¹,

Riniati²,

Indarti³

et al. 2021

Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)

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Solid Oxide Fuel Cells (SOFCs) offer their ability to directly convert hydrocarbon fuel into electricity via internal dry reforming. NiYSZ-based SOFC anodes were manufactured via aqueous tape casting. Raw materials such as NiO and yttria-stabilized ZrO2 powders, glycerol, polyvinyl alcohol (PVA), and water were weighed and mixed. The obtained slurry was ball milled for 12 hours, de-gassed, tape-cast, and dried at ambient temperature to obtain smooth, crack-free, elastic, and easy to remove green tapes. The good green tapes were then sintered at 1200˚C. The sintered tapes were characterized for their morphology, topography, and composition by using SEM/EDX. The hardness uses Vickers hardness tests while the electrical conductivity at 600-800 o C uses a special furnace and a multimeter. On the other hand, the porosity is being tested by the Archimedes method. The results showed that good SOFC anode tapes were obtained after degassing in the range of 32 -125 hours depending on the amount of PVA and water added to the mixture. The resulting morphology and topography of the anode tapes were comparable with those of the reference anode tape, with pore sizes ranging from 100ɳm-1μm and 28% porosity (pore volume). The tapes' hardness after sintering was in the range of 170.3 HV and 212.2 HV. Under the condition, their conductivities were 0.098 Siemens and 0.529 Siemens at 750 o C and 800 o C respectively. The successful attempts to make NiYSZ-based SOFC anodes using locally available materials and equipment are promising as the initial steps for further development of SOFC manufacturing in Indonesia. The developed SOFC will be further tested as a Solid Oxide Electrolyser Cell (SOEC) to produce hydrogen.

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Photodegradation of organic compounds using chromium oxide-doped nano-sulfated zirconia

2017

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Microstructure and mechanical properties of Ni/10mol% Sc2O3–1mol% CeO2–ZrO2 cermet anode for solid oxide fuel cells

Cited by 5 publications

References 37 publications

Visualizing the Structural Evolution of LSM/xYSZ Composite Cathodes for SOFC by in-situ Neutron Diffraction

Visualizing the Structural Evolution of LSM/xYSZ Composite Cathodes for SOFC by in-situ Neutron Diffraction

Preparation and Characterizations of NiYSZ-based Anode for Solid Oxide Fuel Cells and Solid Oxide Electrolyser Cells

Photodegradation of organic compounds using chromium oxide-doped nano-sulfated zirconia

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