成孔体对电化学烟气净化用带铸多孔板晶粒内部和晶界电导率的影响

IF 0.5 4区 材料科学 Q4 MATERIALS SCIENCE, CERAMICS Journal of Ceramic Science and Technology Pub Date : 2018-01-01 DOI:10.4416/JCST2017-00024
C. G. Schmidt, K. Andersen, E. Stamate, A. Kaiser, K. Hansen
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引用次数: 0

摘要

采用带铸法制备了不同类型、形状和尺寸的成孔器,制备了电化学烟气净化用Ce0.9Gd0.1O1.95 (CGO)电解质。采用电化学阻抗谱法对烧结体进行表征,研究不同成孔剂对铸带电化学性能的影响。观察到不同成孔剂对电导率(晶粒内部和晶界电导率)的强烈影响。此外,电导率数据也与之前获得的渗透率数据相关联。电导率数据与渗透率数据的相关性表明,渗透率越高,电导率越低。孔隙率对电导率也有影响。烧结体孔隙率越高,电导率越低,与预期一致。
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The Role of Pore-Formers on Grain Interior and Grain Boundary Conductivity in Tape-Cast Porous Sheets for Electrochemical Flue Gas Purification
Ce0.9Gd0.1O1.95 (CGO) electrolytes for electrochemical flue gas purification were fabricated by means of tape casting with different types, shapes and sizes of pore-formers. The sintered bodies were characterized with electrochemical impedance spectroscopy, to investigate the role of the different pore-formers on the electrochemical properties of the cast tapes. A strong effect of the different pore-formers on the conductivity (both grain interior and grain boundary conductivities) was observed. In addition, the conductivity data were also correlated with previously obtained gas permeability data. The conductivity data correlated with the permeability data in the sense that a higher permeability lead to a lower conductivity. The porosity of the samples also influenced the conductivities. The higher the porosity of the sintered bodies, the lower the conductivity was, as expected.
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来源期刊
Journal of Ceramic Science and Technology
Journal of Ceramic Science and Technology MATERIALS SCIENCE, CERAMICS-
CiteScore
0.80
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期刊介绍: The Journal of Ceramic Science and Technology publishes original scientific articles on all topics of ceramic science and technology from all ceramic branches. The focus is on the scientific exploration of the relationships between processing, microstructure and properties of sintered ceramic materials as well as on new processing routes for innovative ceramic materials. The papers may have either theoretical or experimental background. A high quality of publications will be guaranteed by a thorough double blind peer review process.
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