Preparation and characterization of Ce1-x(Gd 0.5Pr0.5)xO2 electrolyte for IT-SOFCs

International Journal of Hydrogen Energy

Volumn 37, Issue 13, 2012, Pages 10311-10317

  Ramesh, S ^a   Raju, K C James ^a  

^a UNIVERSITY OF HYDERABAD   (India)

Author keywords

Activation energy; Electrolyte; Ionic conductivity; IT SOFC; Sol gel process

Indexed keywords

ACTIVATION ENERGY; CHEMICAL ACTIVATION; CHEMICAL ANALYSIS; ELECTROLYTES; ENERGY DISPERSIVE SPECTROSCOPY; GRAIN BOUNDARIES; IONIC CONDUCTIVITY; RIETVELD REFINEMENT; SCANNING ELECTRON MICROSCOPY; SINTERING; SOL-GEL PROCESS; SOLID OXIDE FUEL CELLS (SOFC); TEMPERATURE; X RAY DIFFRACTION;

A.C. IMPEDANCE SPECTROSCOPY; CHEMICAL COMPOSITIONS; INTERMEDIATE TEMPERATURES; IT-SOFCS; LOW TEMPERATURE COMBUSTION; RELATIVE DENSITY; TEMPERATURE RANGE; X-RAY DIFFRACTION DATA;

SOLID ELECTROLYTES;

EID: 84862171370     PISSN: 03603199     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.ijhydene.2012.04.008     Document Type: Article

References (14)

1. Larmine Dicks. Fuel cell systems explained. London: John Wiley& Sons; 2000. p. 166.
2. Inaba H, Tagawa H. Ceria based solid electrolytes. Solid State Ionics 1996;83:1-16.
3. Kilner JA. Fast oxygen transport in acceptor doped oxides. Solid State Ionics 2000;129:13-23.
4. Kim DJ. Lattice parameters, ionic conductivities, and solubility limits in fluorite-structure MO2 oxide [M = Hf4+, Zr4+,Ce4+,Th4+,U4+] solid solutions. J Am Ceram Soc 1989; 72:1415-21.
5. Anderson DA, Simak SI, Skorodumova NV, Abrikosov IA, Johansson B. Optimization of ionic conductivity in doped ceria. PNAS 2006;103:3518-21.
6. Omer S, Wachsman ED, Nino JC. Higher conductivity Sm3+ and Nd3+ co-doped ceria-based electrolyte materials. Solid State Ionics 2008;178:1890-7.
7. Steele BCH. Appraisal of Ce1-yGdyO2-y/2 electrolytes for IT-SOFC operation at 500 °C. Solid State Ionics 2000;129:95-110.
8. Wagner JB, Wagner C. Electrical conductivity measurements on cuprous halides. J Chem Phys 1957;26:1597-601.
9. Omer S, Wachsman ED, Jones JL, Nino JC. Crystal structure-ionic conductivity relationships in doped ceria systems. J Am Ceram Soc 2009;92:2674-81.
10. Shannon RD. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallogr A 1976;32:751-67.
11. www.fullprof.com.
12. Moure A, Moure C, Tartaj J. A significant improvement of the processing and electric properties of CeO2 co-doped with Ca and Sm by mechanosynthesis. J Power Sources 2011;196: 10543-9.
13. Omer S, Wachsman ED, Nino JC. A co-doping approach towards enhanced ionic conductivity in fluorite-based electrolytes. Solid State Ionics 2006;177:3199-208.
14. Pikalova EYu, Murashkina AA, Maragou VI, Demin AK, Strekalovsky VN, Tsiakaras PE. CeO2 based materials doped with lanthanides for applications in intermediate temperature electrochemical devices. Int J Hydrogen Energy 2011;36:6175-83.