Influence of strontium co-doping on the structural, optical, and electrical properties of erbium-doped ceria electrolyte for intermediate temperature solid oxide fuel cells
Source abstract
Abstract
Abstract This study mainly aimed to elucidate the effects of strontium co-doping on the structural, optical, and electrical properties of erbium-doped ceria (Ce0.8Er0.2O2-δ). Ce1-x-yErxSryO2-δ co-doped electrolytes were synthesized through sol–gel-assisted citric acid–nitrate combustion technique and sintered at 1500 °C for 6 h. X-ray diffraction results confirmed that the sintered electrolytes possessed a cubic fluorite crystal structure. However, a perovskite secondary phase (SrCeO3) was observed in Ce0.8Er0.125Sr0.075O2-δ co-doped composition due to the low solubility limit of strontium (~5 mol%) in ceria. UV–Vis spectroscopy showed that the co-doping of strontium from 0 mol% to 7.5 mol% increased the direct band gap from 3.41 eV to 3.43 eV. The relative densities and the grain size were in the range of 96.02–97.68% and 1.5–3.28 µm, respectively, with increasing the strontium content from 0 mol% to 7.5 mol%. Electrochemical impedance spectroscopy showed that the total resistance of Ce0.8Er0.2O2-δ increased as the strontium content increased. Singly doped Ce0.8Er0.2O2-δ electrolyte exhibited the highest ionic conductivity of 18.22 mS/cm at 700 °C and the lowest activation energy of 0.55 eV within 600–800 °C among all other studied electrolytes.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Electronic and Structural Properties of Oxides · Catalytic Processes in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (62)
Show source-provided references
1. Challenges in fabricating planar solid oxide fuel cells: a review10.1016/j.rser.2017.01.019 ↗
2. Fuel cell: fundamental, classification, application, and environmental impact
3. Ceria-based solid electrolytes10.1016/0167-2738(95)00229-4 ↗
4. Intermediate temperature solid oxide fuel cells10.1039/b612060c ↗
5. Conductivitty measurements on rare earth metal oxides: II10.1515/zpch-1959-21122 ↗
6. Oxygen ion conduction of the fluorite-type Ce1-xLnxO2-x/2 (Ln = lanthanoid element)10.1149/1.2134143 ↗
7. Electrical properties and microstructure in the system ceria-alkaline earth oxide10.1007/BF01154008 ↗
8. Effect of the carbonate environment on morphology and sintering behaviour of variously co-doped (Ca, Sr, Er, Pr) Samarium-doped Ceria in co-precipitation/hydrothermal synthesis10.1016/j.ceramint.2018.06.269 ↗
9. Structural, optical and electrical properties of Ce0.8Sm0.2-xErxO2-δ(x = 0–0.2) Co-doped ceria electrolytes10.1016/j.ceramint.2018.04.200 ↗
10. Ionic conductivities and high resolution microscopic evaluation of grain and grain boundaries of cerium-based codoped solid electrolytes10.1016/j.ceramint.2018.04.210 ↗
11. Processing and conductivity behavior of La, Sm, Fe singly and doubly doped ceria: As electrolytes for IT-SOFCs10.1016/j.ssi.2018.03.005 ↗
12. Effects of dopant ions on the conductivity of Ce0.75Sm0.2M0.05O1.875 (M = Al, Fe, Y, Bi) electrolytes10.1007/s10854-018-9359-7 ↗
13. Synthesis and characterization of Y and Dy co-doped ceria solid electrolytes for IT-SOFCs: a microwave sintering10.1007/s12598-018-1059-1 ↗
14. Structure, densification and electrical properties of Gd3+ and Cu2+ co-doped ceria solid electrolytes for SOFC applications: effects of Gd2O3 content10.1016/j.ceramint.2017.11.009 ↗
15. Structures and electrical conductivities of Gd3+and Fe3+co-doped cerium oxide electrolytes sintered at low temperature for ILT-SOFCs10.1016/j.ceramint.2018.03.041 ↗
16. Direct addition of lithium and cobalt precursors to Ce0.8Gd0.2O1.95 electrolytes to improve microstructural and electrochemical properties in IT-SOFC at lower sintering temperature
17. Alkaline earth metal and samarium co-doped ceria as efficient electrolytes10.1063/1.5005824 ↗
18. Thermal and electrical properties of Ce0.8-xPrxSm0.2O2-δ electrolyte materials for IT-SOFC applications10.1007/s11581-017-2129-3 ↗
19. The microstructures and property analysis of aliovalent cations (Sm3+, Mg2+, Ca2+, Sr2+, Ba2+) co-doped ceria-base electrolytes after an aging treatment10.1016/j.ijhydene.2014.03.063 ↗
20. Effect of Ca2+ and Sr2+ doping on the microstructure and cell performance of samaria-doped ceria electrolytes used in solid oxide fuel cells10.1016/j.ijhydene.2016.06.172 ↗
21. Effect of Nd/Mg co-doping on the electrical properties of ceria-based electrolyte materials10.1080/14328917.2016.1185274 ↗
22. Sr2+-Gd3+ co-doped CeO2: a cost-effective variant for IT-SOFC electrolytes10.1016/j.ceramint.2015.03.317 ↗
23. Sm3+ and Sr2+ co-doped ceria prepared by citrate-nitrate auto-combustion method10.1016/j.ijhydene.2013.10.009 ↗
24. Ionic conductivity investigation in samarium and strontium co-doped ceria system10.1088/0031-8949/2007/T129/067 ↗
25. Ionic conductivity investigation in lanthanum (La) and strontium (Sr) co-doped ceria system10.1016/j.jpowsour.2012.08.095 ↗
26. Effect of strontium addition on europium-doped ceria properties10.1016/j.ssi.2009.02.025 ↗
27. Lattice strain dependent on ionic conductivity of Ce0.8 + xY0.2 − 2xSrxO1.9(x = 0–0.08) electrolyte10.1016/j.ssi.2016.07.014 ↗
28. Preparation and characterization of Ce0.85La0.15 − xSrxO{2 − (0.075 + x / 2)} solid electrolytes for intermediate temperature solid oxide fuel cells10.1007/s11581-014-1190-4 ↗
29. Preparation and characterization of Ce1-xDyx-ySryO2-δsystem
30. Studies on structural, morphological and electrical properties of Ce1−xErxO2−δ (x = 0.05–0.20) as solid electrolyte for IT – SOFC10.1016/j.matchemphys.2015.01.036 ↗
31. Effects of rare-earth doping on the ionic conduction of CeO2 in solid oxide fuel cells10.1016/j.ceramint.2017.11.149 ↗
32. The preparation and electrical properties of La doped Er0.2Ce0.8O1.9 based solid electrolyte10.20964/2017.08.66 ↗
33. Er and Gd Co-doped ceria-based electrolyte materials for IT-SOFCs prepared by the cellulose-templating method10.1007/s11661-014-2456-1 ↗
34. Influence of sintering temperature on the power density of samarium-doped-ceria carbonate electrolyte composites for low-temperature solid oxide fuel cells10.1016/j.ceramint.2013.01.002 ↗
35. Influence of mixing time on the purity and physical properties of SrFe0.5Ti0.5O3-δ powders produced by solution combustion10.1016/j.powtec.2017.03.035 ↗
36. Effect of strontium (Sr) doping on the conductivity of ceria10.1016/j.jpowsour.2011.10.140 ↗
37. Raman and Rietveld structural characterization of sintered alkaline earth doped ceria10.1016/j.matchemphys.2012.05.084 ↗
38. Lattice parameters and densities of rare-earth oxide doped ceria electrolytes10.1111/j.1151-2916.1995.tb08820.x ↗
39. Sm3+and Sr2+co-doped ceria prepared by citrate-nitrate auto-combustion method10.1016/j.ijhydene.2013.10.009 ↗
40. Ce0.80Sm0.10Ba0.05Er0.05O2-δ multi-doped ceria electrolyte for intermediate temperature solid oxide fuel cells10.1016/j.ceramint.2016.10.075 ↗
41. Influence of rare earth (RE=Nd, Y, Pr and Er) doping on the microstructural and optical properties of ceria nanostructures10.1016/j.ceramint.2017.01.046 ↗
42. Synthesis and characterization of M-doped ceria-ternary carbonate composite electrolytes (M = erbium, lanthanum and strontium) for low-temperature solid oxide fuel cells10.1016/j.jallcom.2018.10.076 ↗
43. Structural, optical and dielectric properties of Ce0.9Nd0.1O1.95 nanocrystalline oxygen ion conductors: effect of sintering temperature10.1016/j.jpcs.2014.08.015 ↗
44. Investigation on structural, optical, and magnetic properties of Dy-doped-CeO2 nanoparticles synthesized by microwave-induced combustion method, synth. react. inorganic10.1080/15533174.2015.1004418 ↗
45. Influence of oxygen ion enrichment on optical, mechanical, and electrical properties of LSCF perovskite nanocomposite10.1016/j.ceramint.2018.03.060 ↗
46. Superior oxide ion conductivity of novel acceptor doped cerium oxide electrolytes for intermediate-temperature solid oxide fuel cell applications10.1021/acs.jpcc.6b05873 ↗
47. Electrical properties of ceria/carbonate nanocomposites10.1016/j.jallcom.2012.03.098 ↗
48. Synthesis, structural and optical properties of CeO2 nanoparticles synthesized by a simple polyvinyl pyrrolidone (PVP) solution route10.1016/j.matchemphys.2008.12.031 ↗
49. Application of nanostructured Ca doped CeO2for ultraviolet filtration10.1016/j.materresbull.2010.02.008 ↗
50. Effect of Sr on Sm-doped ceria electrolyte10.1016/j.ijhydene.2011.01.042 ↗
51. Ceramics science and technology
52. Improved microstructure and sintering temperature of bismuth nano-doped GDC powders synthesized by direct sol-gel combustion10.1016/j.ceramint.2017.11.165 ↗
53. Impedance and modulus spectroscopy of polycrystalline solid electrolytes10.1016/S0022-0728(76)80229-X ↗
54. AC impedance studies of rare earth oxide doped ceria10.1016/0167-2738(94)00242-K ↗
55. O’Hayre · 2009
56. Enhanced ionic conductivity of Ce0.8Sm0.2O2-δ by Sr addition10.1016/j.jpowsour.2012.01.001 ↗
57. Grain‐boundary effect in ceria doped with trivalent cations: II, microstructure and microanalysis10.1111/j.1151-2916.1986.tb07465.x ↗
58. Synthesis and electrical properties of Ce1-xGdxO2-x/2 (x = 0.05-0.3) solid solutions prepared by a citrate-nitrate combustion method10.1016/j.ceramint.2011.12.025 ↗
59. Electrolyte materials for solid oxide fuel cells derived from metal complexes: gadolinia-doped ceria10.1016/j.ceramint.2011.11.006 ↗
60. Influence of lithium on the sintering behavior and electrical properties of Ce0.8Gd0.2O1.9 for intermediate-temperature solid oxide fuel cells10.1002/ente.201500275 ↗
61. Electrical and microstructural characterization of ceramic gadolinium-doped ceria electrolytes for ITSOFCs by sol-gel route
62. Oxide-ion electrolytes10.1146/annurev.matsci.33.022802.091651 ↗