Solid oxide fuel cells electrolyte for

As a consequence of Equation (8), the concentration of oxygen vacancies is fixed by the dopant concentration, Therefore, in a typical YSZ electrolyte, e.g. 

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Du Y and Sammes NM. Fabrication of tubular electrolytes for solid oxide fuel cells using strontium- and magnesium-doped LaGa03 materials. J. Eur. Ceram. Soc. 2001 21 727-735. 

The redox properties of ceria-zirconia mixed oxides are interesting, because these materials find applications as electrolytes for solid oxide fuel cells, supports for catalysts for H2 production, and components in three-way automobile exhaust conversion catalysts. The group of Kaspar and Fornasiero (Montini et al., 2004, 2005) used TPR/TPO-Raman spectroscopy to identify the structural features of more easily reducible zirconia-ceria oxides and the best method for their preparation by suitable treatments. TPR/TPO experiments and Raman spectra recorded during redox cycles demonstrated that a pyrochlore-type cation ordering in Ce2Zr2Og facilitates low temperature reduction. 

Kurumada, M., Ito, A., and Fujie, Y, Preparation of La2-xSrxGaQ gMgQ jOj.j electrolyte for solid oxide fuel cell by citrate method using industrial raw materials, J. Ceram. Soc. Jpn., Ill, 200-204 (2003). 

Chapter 10 The Electrolytes for Solid-Oxide Fuel Cells.209... 

Gbdickemeier M, Sasaki K, Gauckler L. In Dokiya M, Yamomoto O, Tagawa H, Singhal SC, editors. Solid oxide fuel cells IV. The Electrochemical Society, Pennington, NJ 1995. Milliken C, Elangovan S, Hartvigsen J, Khandkar A. Ceria Electrolyte for Solid Oxide Fuel Cell Applications. Report TR-109199, Electric Power Research Institute, Palo Alto, CA, Nov. 1997. 

Abstract The electrolyte for solid oxide fuel cells (SOFC s) must be stable in both... 

Since the electronic conductivity of nanocrystalline ScSZ becomes significant in reducing atmosphere (Fig.3), its contribution to the electrical transport should be considered. This can be discussed based on the dependence of the ionic transference number, t,- = cr,- / (oxygen activity. Such information is important for the development of ScSZ solid electrolyte for Solid Oxide Fuel Cells. Figure 4 presents the relationship between the ionic transference number and oxygen activity, which has been determined based on the presented conductivity measurements and the defect model [13]. 

Bellon, O., Sammes, N. M. Staiuforth, J. Mechanical properties and electrochemical characterisation of extruded doped cerium oxide for use as an electrolyte for solid oxide fuel cells. Journal of Power Sources 75, 116-121, doi 10.1016/s0378-7753(98)00104-9 (1998). 

Yokokawa H, Sakai N, Horita T, Yamaji K, Brito ME (2005) Electrolytes for solid-oxide fuel cells. MRS Bull 30(8) 591-595... 

Tsoda A, Gupta A, Naoumoidis A, Skarmoutsos D, Nikolopoulos P (1998) Performance of a double-layer CGO/YSZ electrolyte for solid oxide fuel cells. Irmics 4 234—240... 

Nakao T, Mineshige A, Kobune M, Yazawa T, Yoshioka H (2008) Chemical stability of LaioSig027 and its application to electrolytes for solid oxide fuel cells. Solid State Ionics 179 1567-1569... 

Ball, R.J. and R. Stevens, Novel Composite Electrolytes for Solid Oxide Fuel Cell Applications , paper presented at the 26th Annual International Conference on Advanced Ceramics and Composites, Cocoa Beach, FL, January 13 - 18, 2002. 

A related study has been performed on perovskite-structured oxides for possible use as cheap hydrogen membranes and electrolytes for solid oxide fuel cells (SOFC). SOFCs have demonstrated excellent fuel efficiency and versatility, but the short operational lifetime of any fuel cell remains a major hindrance for commercial utilization [68]. Several factors contribute to... 

Zirconia ceramics are used for a variety of applications as catalysts, structural materials, and electrolytes for solid-oxide fuel cells. Zirconia (zirconium dioxide ZrOg) exhibits a phase transition sequence, " ... 

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