Composite solid oxide fuel cell anode based on ceria and strontium titanate

Marina, Olga A; Pederson, Larry R

Composite solid oxide fuel cell anode based on ceria and strontium titanate

Patent · Tue Dec 23 04:00:00 EST 2008

OSTI ID:959117

Marina, Olga A ^[1]; Pederson, Larry R ^[1]

Richland, WA

An anode and method of making the same wherein the anode consists of two separate phases, one consisting of a doped strontium titanate phase and one consisting of a doped cerium oxide phase. The strontium titanate phase consists of Sr.sub.1-xM.sub.xTiO.sub.3-.delta., where M is either yttrium (Y), scandium (Sc), or lanthanum (La), where "x" may vary typically from about 0.01 to about 0.5, and where .delta. is indicative of some degree of oxygen non-stoichiometry. A small quantity of cerium may also substitute for titanium in the strontium titanate lattice. The cerium oxide consists of N.sub.yCe.sub.1-yO.sub.2-.delta., where N is either niobium (Nb), vanadium (V), antimony (Sb) or tantalum (Ta) and where "y" may vary typically from about 0.001 to about 0.1 and wherein the ratio of Ti in said first phase to the sum of Ce and N in the second phase is between about 0.2 to about 0.75. Small quantities of strontium, yttrium, and/or lanthanum may additionally substitute into the cerium oxide lattice. The combination of these two phases results in better performance than either phase used separately as an anode for solid oxide fuel cell or other electrochemical device.

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Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA

Sponsoring Organization:: United States Department of Energy

DOE Contract Number:: AC06-76RL01830

Assignee:: Battelle Memorial Institute (Richland, WA)

Patent Number(s):: 7,468,218

Application Number:: 10/897,521

OSTI ID:: 959117

Country of Publication:: United States

Language:: English

References (26)

Oxidation-reduction behaviour of La-doped SrTiO3 Flandermeyer, B. F.; Agarwal, A. K.; Anderson, H. U. Journal of Materials Science, Vol. 19, Issue 8 https://doi.org/10.1007/BF00550814	journal	August 1984
Electrical conductivity in strontium titanate Balachandran, U.; Eror, N. G. Journal of Solid State Chemistry, Vol. 39, Issue 3 https://doi.org/10.1016/0022-4596(81)90270-X	journal	October 1981
Self-compensation in lanthanum-doped strontium titanate Eror, N. G.; Balachandran, U. Journal of Solid State Chemistry, Vol. 40, Issue 1 https://doi.org/10.1016/0022-4596(81)90365-0	journal	November 1981
Perovskite-type oxides as oxygen electrodes for high temperature oxide fuel cells Yamamoto, O. Solid State Ionics, Vol. 22, Issue 2-3 https://doi.org/10.1016/0167-2738(87)90039-7	journal	January 1987
Low voltage varistors based on SrTiO3 ceramics Kutty, T. R. N.; Philip, Sam Materials Science and Engineering: B, Vol. 33, Issue 2-3 https://doi.org/10.1016/0921-5107(94)01205-9	journal	September 1995
Chromite/titanate based perovskites for application as anodes in solid oxide fuel cells Pudmich, G. Solid State Ionics, Vol. 135, Issue 1-4 https://doi.org/10.1016/S0167-2738(00)00391-X	journal	November 2000
Impedance spectroscopy of Sr0.97Ti1−xFexO3−δ materials with moderate Fe-contents Jurado, J. Solid State Ionics, Vol. 143, Issue 2 https://doi.org/10.1016/S0167-2738(01)00823-2	journal	June 2001
Synthesis and structures of carrier doped titanates with the Ruddlesden–Popper structure (Sr0.95La0.05)n+1TinO3n+1 (n=1, 2) Sugimoto, W. Solid State Ionics, Vol. 108, Issue 1-4 https://doi.org/10.1016/S0167-2738(98)00056-3	journal	May 1998
EXAFS analyses of CaTiO3 doped with Ce, Nd and U Hanajiri, Y. Solid State Ionics, Vol. 108, Issue 1-4 https://doi.org/10.1016/S0167-2738(98)00061-7	journal	May 1998
Niobium based tetragonal tungsten bronzes as potential anodes for solid oxide fuel cells: synthesis and electrical characterisation Slater, P. R.; Irvine, J. T. S. Solid State Ionics, Vol. 120, Issue 1-4 https://doi.org/10.1016/S0167-2738(99)00020-X	journal	May 1999
Selective oxidation and dehydrogenation of benzyl alcohol on ABB′O3 (A=Ba, B=Pb, Ce, Ti and B′=Bi, Cu, Sb)-type perovskite oxides-temperature programmed reduction studies Sumathi, R.; Johnson, K.; Viswanathan, B. Applied Catalysis A: General, Vol. 172, Issue 1 https://doi.org/10.1016/S0926-860X(98)00119-7	journal	August 1998
Synthesis, structure, and properties of lanthanum strontium titanate (La1-xSrxTiO3) (0 .ltoreq. x .ltoreq. 1) Sunstrom, Joseph E.; Kauzlarich, Susan M.; Klavins, Peter Chemistry of Materials, Vol. 4, Issue 2 https://doi.org/10.1021/cm00020a022	journal	March 1992
Synthesis and electrical characterisation of doped perovskite titanates as potential anode materials for solid oxide fuel cells Slater, Peter R.; Fagg, Duncan P.; Irvine, John T. S. Journal of Materials Chemistry, Vol. 7, Issue 12 https://doi.org/10.1039/a702865b	journal	January 1997
Electrical Conduction in p -Type Titanium Sesquioxide Yahia, J.; Frederikse, H. P. R. Physical Review, Vol. 123, Issue 4 https://doi.org/10.1103/PhysRev.123.1257	journal	August 1961
Electronic Transport in Strontium Titanate Frederikse, H. P. R.; Thurber, W. R.; Hosler, W. R. Physical Review, Vol. 134, Issue 2A https://doi.org/10.1103/PhysRev.134.A442	journal	April 1964
Electron Mobility in Semiconducting Strontium Titanate Tufte, O. N.; Chapman, P. W. Physical Review, Vol. 155, Issue 3 https://doi.org/10.1103/PhysRev.155.796	journal	March 1967
Advanced anodes for high-temperature fuel cells Atkinson, A.; Barnett, S.; Gorte, R. J. Materials for Sustainable Energy, p. 213*-223 https://doi.org/10.1142/9789814317665_0030	book	October 2010
Effect of Ionic Conductivity of Zirconia Electrolytes on the Polarization Behavior of Ceria-Based Anodes in Solid Oxide Fuel Cells Watanabe, Masahiro Journal of The Electrochemical Society, Vol. 144, Issue 5 https://doi.org/10.1149/1.1837671	journal	January 1997
Ionic and Electronic Conduction in Fe and Cr Doped ( La , Sr ) GaO _3 − Δ Baker, R. T.; Gharbage, B.; Marques, F. M. B. Journal of The Electrochemical Society, Vol. 144, Issue 9 https://doi.org/10.1149/1.1837970	journal	January 1997
Physical Properties of Mixed Conductor Solid Oxide Fuel Cell Anodes of Doped CeO[sub 2] Mogensen, Mogens Journal of The Electrochemical Society, Vol. 141, Issue 8 https://doi.org/10.1149/1.2055072	journal	January 1994
Electrical Conductivity in Lanthanum-Doped Strontium Titanate Balachandran, U. Journal of The Electrochemical Society, Vol. 129, Issue 5 https://doi.org/10.1149/1.2124008	journal	January 1982
Nonstoichiometry in SrTiO[sub 3] Chan, N. -H. Journal of The Electrochemical Society, Vol. 128, Issue 8 https://doi.org/10.1149/1.2127727	journal	January 1981
Electrical Conduction in Nb[sub 2]O[sub 5]-Doped Cerium Dioxide Naik, I. K. Journal of The Electrochemical Society, Vol. 126, Issue 4 https://doi.org/10.1149/1.2129086	journal	January 1979
Evaluation of Novel Oxide Anodes for Methane Conversion in SOFC Systems Middleton, P. H. ECS Proceedings Volumes, Vol. 1993-4, Issue 1 https://doi.org/10.1149/199304.0542PV	journal	January 1993
AC van der Pauw Measurements of the Electical Conductivity of Iron-doped Calcium Titanate Sutija, Davor P. ECS Proceedings Volumes, Vol. 1993-4, Issue 1 https://doi.org/10.1149/199304.0552PV	journal	January 1993
Electrochemical Properties of Oxide Anode Materials for SOFC Yashiro, Keiji ECS Proceedings Volumes, Vol. 2001-16, Issue 1 https://doi.org/10.1149/200116.0678PV	journal	January 2001

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