研究目的
Investigating the electrical and mechanical properties of CeO2-based thin-film coatings obtained by electrophoretic deposition for application in solid oxide fuel cells.
研究成果
The study successfully demonstrated the preparation of CeO2-based thin-film coatings with high adhesivity and conductivity suitable for solid oxide fuel cells. The optimal conditions for electrophoretic deposition were identified, and the coatings exhibited a compact granular structure after sintering.
研究不足
The study is limited by the specific conditions of electrophoretic deposition and the materials used, which may not be universally applicable. Further optimization may be required for different substrates or operational conditions.
1：Experimental Design and Method Selection:
The study involved the preparation of Ce
2：8(Sm75Sr20Ba05)2O2 – δ nanopowder by laser evaporation of a solid-phase target followed by condensation. The nanopowder was used to prepare suspensions for electrophoretic deposition in a mixed isopropanol :
acetyl acetone = 50 : 50 vol % disperse medium.
3：Sample Selection and Data Sources:
The nanopowder was characterized by transmission electron microscopy, X-ray diffraction, and Brunauer–Emmett–Taylor method for specific surface area determination.
4：List of Experimental Equipment and Materials:
Equipment included a JEOL JSM 2100 transmission electron microscope, LEO 982 scanning electron microscope, D8 DISCOVER diffractometer, Micrometrics TriStar 3000 vacuum sorption setup, and NETZSCH STA-409 installation for thermal analysis.
5：Experimental Procedures and Operational Workflow:
Electrophoretic deposition was carried out on a La2NiO4 + δ substrate under varying conditions to determine optimal parameters for uniform coating formation.
6：Data Analysis Methods:
The conductivity of the coatings was measured by the four-probe method and impedance spectroscopy.
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