Ni-Yttria-Stabilized Zirconia (YSZ) - Practical Electron Microscopy and Database - - An Online Book - |
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Microanalysis | EM Book https://www.globalsino.com/EM/ | ||||||||
This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers. | ||||||||
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Ni-YSZ cermet is most commonly used as the anode of a solid oxide fuel cell (SOFC) because it has excellent electrochemical performance in both hydrogen fuel and clean blended synthetic coal syngas mixtures (e.g. 30% H2, 26% H2O, 23% CO, and 21% CO2). However, it still possesses two main problems when using fuels such as natural gas: The carbon deposition varies depending on the reaction conditions: Various strategies have been suggested to limit carbon deposition in SOFCs. For instance, direct oxidation of natural gas presented that the carbon deposition on a Ni/YSZ anode can be prevented by increasing the operation current density and lowering the operation temperature [5,6]. However, it is not easy to achieve such operation conditions. Therefore, it is necessary to develop alternative anode materials that are capable of displaying mixed conductivity when subjected to complex fuels [3]. Except for Ni/YSZ as the most common anode material in SOFCs, gadolinium doped ceria oxide (GDC), doped SrTiO3 [7,8], and Cu-CeO-YSZ [9] are also used. Nonetheless, some of them have disadvantages of complicated fabrication processes, low conductivity or poor electrochemical catalyst activity.
[1] F. N. Cayan, M. Zhi, S. R. Pakalapati, I. Celik, N. Wu, R. Gemmen , Journal of Power
Sources, 2008. 185(2): p. 595-602.
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