Solid oxide fuel cells thin-film

Leng YJ, Chan SH, Khor KA, and Jiang SP. Performance evaluation of anode-supported solid oxide fuel cells with thin-film YSZ electrolyte. Int J Hydrogen Energy 2004 29 1025-1033. 

Rose L, Menon M, Kammer K, Kesler O, and Halvor Larsen P. Processing of Ce Gdx02 5 (GDC) thin films from precursors for application in solid oxide fuel cells. Adv. Mater. Res. 2007 15-17 293-298. 

Lang M, Franco T, Schiller G, and Wagner N. Electrochemical characterization of vacuum plasma sprayed thin-film solid oxide fuel cells (SOFC) for reduced operating temperatures. J. Appl. Electrochem. 2002 32 871-874. 

Intermediate Temperature Solid Oxide Fuel Cell (ITSOFC) The electrolyte and electrode materials in this fuel cell are basically the same as used in the TSOFC. The ITSOFC operates at a lower temperature, however, typically between 600 to 800°C. For this reason, thin film technology is being developed to promote ionic conduction alternative electrolyte materials are also being developed. 

It has been observed that solid oxide fuel cell voltage losses are dominated by ohmic polarization and that the most significant contribution to the ohmic polarization is the interfacial resistance between the anode and the electrolyte (23). This interfacial resistance is dependent on nickel distribution in the anode. A process has been developed, PMSS (pyrolysis of metallic soap slurry), where NiO particles are surrounded by thin films or fine precipitates of yttria stabilized zirconia (YSZ) to improve nickel dispersion to strengthen adhesion of the anode to the YSZ electrolyte. This may help relieve the mismatch in thermal expansion between the anode and the electrolyte. 

Dr. Hui has worked on various projects, including chemical sensors, solid oxide fuel cells, magnetic materials, gas separation membranes, nanostruc-tured materials, thin film fabrication, and protective coatings for metals. He has more than 80 research publications, one worldwide patent, and one U.S. patent (pending). He is currently leading and involved in several projects for the development of metal-supported solid oxide fuel cells (SOFCs), ceramic nanomaterials as catalyst supports for high-temperature PEM fuel cells, protective ceramic coatings on metallic substrates, ceramic electrode materials for batteries, and ceramic proton conductors. Dr. Hui is also an active member of the Electrochemical Society and the American Ceramic Society. 

There are many chemically reacting flow situations in which a reactive stream flows interior to a channel or duct. Two such examples are illustrated in Figs. 1.4 and 1.6, which consider flow in a catalytic-combustion monolith [28,156,168,259,322] and in the channels of a solid-oxide fuel cell. Other examples include the catalytic converters in automobiles. Certainly there are many industrial chemical processes that involve reactive flow tubular reactors. Innovative new short-contact-time processes use flow in catalytic monoliths to convert raw hydrocarbons to higher-value chemical feedstocks [37,99,100,173,184,436, 447]. Certain types of chemical-vapor-deposition reactors use a channel to direct flow over a wafer where a thin film is grown or deposited [219]. Flow reactors used in the laboratory to study gas-phase chemical kinetics usually strive to achieve plug-flow conditions and to minimize wall-chemistry effects. Nevertheless, boundary-layer simulations can be used to verify the flow condition or to account for non-ideal behavior [147]. 

Stover, D., Diekmann, U., Flesch, U., Kabs, H., Quadakkers, W.J., Tietz, F. and Vinke, I.C., Recent developments in anode supported thin film SOFC at Research Center Julich, in Proceedings of Solid Oxide Fuel Cells VI, S.C. Singhal and M. Dokiya (Eds.), 1999, p. 812. 

Hibino, T., Hashimoto, A., Suzuki, M., Yano, M., Yoshida, S., and Sano, M. A Solid Oxide Fuel Cell with a Novel Geometry that Eliminates the Need for Preparing a Thin Electrolyte Film, Journal of the Electrochem. Soc., 149, A195 (2002). 

Yan, J.W., Lu, Z.G., Jiang, Y., Dong, Y.L., Yu, C.Y., and Li, W.Z., Fabrication and testing of a doped lanthanum gallate electrolyte thin-film solid oxide fuel cell. Journal of the Electrochemical Society, 2002, 149, A1132-A1135. 

Pale yellow cerium dioxide (ceria, ceric oxide) has the fluorite structure and is used in catalysis" ", solid oxide fuel cells (SOFC)", thin film optical waveguides" , reversible oxygen storage materials for automobile catalysts" and for doping copper oxide superconductors". The diverse cerium enolate precursors and deposition methods used in the formation of cerium oxide thin films are summarized in Table 6, whereby the most common precursor for ceria is Ce(thd)4. 

T. Van Gestel, D. Sebold, W. A. Meulenberg, and H. P. Buchkremer, Development of Thin-Film Nano-Structured Electrolyte Layers for Application in Anode-Supported Solid Oxide Fuel Cells, Solid State Ionics, 179 (11-12), 428-437(2008). 

EXPLORATION OF COMBUSTION CVD METHOD FOR YSZ THIN FILM ELECTROLYTE OF SOLID OXIDE FUEL CELLS... 

Key words Combustion Chemical Vapor Deposition/Thin Film Electrol rte/Solid Oxide Fuel Cells... 

K. Honegger, E. Batawi, Ch. Sprecher, R. Diethelm, Thin Film Solid Oxide Fuel Cell (SOFC) for Intermediate Temperature Operation (700°C), in Solid Oxide Fuel Cells V, H. Yokokawa and S.C. Singhal, Editors, PV 1995, p. 321, The Electrochemical Society Proceedings Series, Pennington, NJ, 1995. 

Chour KW, Chen J, Xu R. Metal-organic vapor deposition of YSZ electrolyte layers for solid oxide fuel cell applications. Thin Solid Films 1997 304 106-12. 

Charpentier P, Fragnaud P, Schleich DM, Lunot C. Thin film solid oxide fuel cells. Ionics 1996 2(3/4) 312-8. 

R. N. Basu, G. Blass, H. P. Buchkremer, D. Stver, F. Tietz, E. Wessel, and I. C. Vinke. SimpUlied processing of anode-supported thin film planar solid oxide fuel cells. J. European Ceramic. Soc. 25, (2005) 463 71. 

Thin films for micro solid oxide fuel cells,... 

M. Lang, T. Franco, G. Schiller, and N. Wagner [2002] Electrochemical Characterization of Vacuum Plasma Sprayed Thin-Film Solid Oxide Fuel Cells (SOFC) for Reduced Operating Temperatures, J. Appl. Electrochem. 32, 871-874. 

E. Wanzenberg, F. Tietz, D. Kek, P. Panjan, and D. Stover [2003] Influence of Electrode Contacts on Conductivity Measurements of Thin YSZ Electrolyte Films and the Impact on Solid Oxide Fuel Cells, Solid State Ionics 164, 121-129. 

Hibino T, Hashimoto A, Suzuki M, Yano M, Yoshida S, Sano M (2002) A solid oxide fuel cell with a novel geometry that eliminates the need for preparing a thin electrolyte film. J Electrochem Soc 149 A195-A200. doi 10.1149/1.1431573... 

Mutoro E, Crumlin EJ, Biegalski MD, Christen HM, Shao-Hom Y (2011) Enhanced oxygen reduction activity on surface-decorated perovskite thin films for solid oxide fuel cells. Energ Environ Sci 4 3689... 

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