journal article·2018-04-25Open access

Interface Effects on the Ionic Conductivity of Doped Ceria–Yttria-Stabilized Zirconia Heterostructures

Daniele Pergolesi, Elisa Gilardi, Emiliana Fabbri, Vladimir Roddatis, George F. Harrington, Thomas Lippert, John A. Kilner, Enrico Traversa

ACS Applied Materials & Interfaces· Volume 10· Issue 16

Abstract

Multilayered heterostructures of Ce0.85Sm0.15O2-δ and Y0.16Zr0.92O2-δ of a high crystallographic quality were fabricated on (001)-oriented MgO single crystal substrates. Keeping the total thickness of the heterostructures constant, the number of ceria-zirconia bilayers was increased while reducing the thickness of each layer. At each interface Ce was found primarily in the reduced, 3+ oxidation state in a layer extending about 2 nm from the interface. Concurrently, the conductivity decreased as the thickness of the layers was reduced, suggesting a progressive confinement of the charge transport along the YSZ layers. The comparative analysis of the in-plane electrical characterization suggests that the contribution to the total electrical conductivity of these interfacial regions is negligible. For the smallest layer thickness of 2 nm the doped ceria layers are electrically insulating and the ionic transport only occurs through the zirconia layers. This is explained in terms of a reduced mobility of the oxygen vacancies in the highly reduced ceria.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Electronic and Structural Properties of Oxides · Catalysis and Oxidation Reactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Paul Scherrer Institut, 5232 Villigen-PSI, Switzerland

Institute of Materials Physics, University of Göttingen, 37077 Göttingen, Germany

Department of Materials, Imperial College London, London SW7 2BP, United Kingdom

Next-Generation Fuel Cell Research Centre, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States

Department of Chemistry and Applied Biosciences, Laboratory of Inorganic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland

International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Road, Chengdu 611731, Sichuan People’s Republic of China

NAST Center & Department of Chemical Science and Technology, University of Rome Tor Vergata, 00133 Rome, Italy

Funding

Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung · Deutsche Forschungsgemeinschaft

References (51)

Show source-provided references
1. 10.1126/science.120409010.1126/science.1204090 ↗
2. 10.1016/S0167-2738(02)00102-910.1016/S0167-2738(02)00102-9 ↗
3. 10.1016/S0167-2738(00)00394-510.1016/S0167-2738(00)00394-5 ↗
4. 10.1016/j.ssi.2005.03.00910.1016/j.ssi.2005.03.009 ↗
5. 10.1016/S1359-6454(00)00261-510.1016/S1359-6454(00)00261-5 ↗
6. 10.1149/06602.0109ecst10.1149/06602.0109ecst ↗
7. 10.1016/S0167-2738(00)00433-110.1016/S0167-2738(00)00433-1 ↗
8. 10.1016/j.ssi.2005.12.01010.1016/j.ssi.2005.12.010 ↗
9. 10.1149/1.183827910.1149/1.1838279 ↗
10. 10.1149/1.327650310.1149/1.3276503 ↗
11. 10.1016/j.ssi.2007.12.00810.1016/j.ssi.2007.12.008 ↗
12. 10.1557/mrs.2014.810.1557/mrs.2014.8 ↗
13. 10.1088/1468-6996/11/5/05450310.1088/1468-6996/11/5/054503 ↗
14. 10.1038/ncomms1069210.1038/ncomms10692 ↗
15. 10.1021/nn501128y10.1021/nn501128y ↗
16. 10.1103/PhysRevB.84.22430810.1103/PhysRevB.84.224308 ↗
17. 10.1039/c000259c10.1039/c000259c ↗
18. 10.1039/C4CP03055A10.1039/C4CP03055A ↗
19. 10.1021/nn302812m10.1021/nn302812m ↗
20. 10.1038/nmat231410.1038/nmat2314 ↗
21. 10.1039/C2CP43231E10.1039/C2CP43231E ↗
22. 10.1063/1.189461510.1063/1.1894615 ↗
23. 10.1002/smll.20090234810.1002/smll.200902348 ↗
24. 10.1088/1468-6996/16/1/01500110.1088/1468-6996/16/1/015001 ↗
25. 10.1111/j.1551-2916.2008.02347.x10.1111/j.1551-2916.2008.02347.x ↗
26. 10.1063/1.486755610.1063/1.4867556 ↗
27. 10.1111/j.1151-2916.2002.tb00460.x10.1111/j.1151-2916.2002.tb00460.x ↗
28. 10.1016/S0167-2738(98)00198-210.1016/S0167-2738(98)00198-2 ↗
29. 10.1038/ncomms729410.1038/ncomms7294 ↗
30. 10.1002/adfm.20100027910.1002/adfm.201000279 ↗
31. 10.1021/cm503131p10.1021/cm503131p ↗
32. 10.1016/j.ultramic.2017.03.01510.1016/j.ultramic.2017.03.015 ↗
33. 10.1038/ncomms1536010.1038/ncomms15360 ↗
34. 10.1016/j.susc.2005.08.01510.1016/j.susc.2005.08.015 ↗
35. 10.1103/PhysRevB.87.13410410.1103/PhysRevB.87.134104 ↗
36. 10.1149/1.212900710.1149/1.2129007 ↗
37. 10.1149/1.240792310.1149/1.2407923 ↗
38. 10.1021/cm502810e10.1021/cm502810e ↗
39. 10.1039/c0cp00385a10.1039/c0cp00385a ↗
40. 10.1016/S0167-2738(97)00345-710.1016/S0167-2738(97)00345-7 ↗
41. 10.1007/BF0055934910.1007/BF00559349 ↗
42. 10.1016/j.pmatsci.2005.07.00110.1016/j.pmatsci.2005.07.001 ↗
43. 10.1039/b801675e10.1039/b801675e ↗
44. 10.1021/jz400187j10.1021/jz400187j ↗
45. 10.1103/PhysRevB.76.19310810.1103/PhysRevB.76.193108 ↗
46. 10.1021/cr940055h10.1021/cr940055h ↗
47. 10.1007/BF0102224610.1007/BF01022246 ↗
48. 10.1016/S0167-2738(97)00519-510.1016/S0167-2738(97)00519-5 ↗
49. 10.1016/S0167-2738(99)00318-510.1016/S0167-2738(99)00318-5 ↗
50. 10.1002/adfm.20080176810.1002/adfm.200801768 ↗
51. 10.1016/j.ssi.2006.04.00810.1016/j.ssi.2006.04.008 ↗