AI Chat Paper
Note: Please note that the following content is generated by AMiner AI. SciOpen does not take any responsibility related to this content.
{{lang === 'zh_CN' ? '文章概述' : 'Summary'}}
{{lang === 'en_US' ? '中' : 'Eng'}}
Chat more with AI
Powered by AMiner. Clicking this button will take you away from SciOpen.
Home Journal of Advanced Ceramics Article
PDF (668.7 KB)
Cite
EndNote(RIS) BibTeX
Collect
Submit Manuscript AI Chat Paper
Show Outline
Outline
Show full outline
Hide outline
Outline
Show full outline
Hide outline
Research Article | Open Access

Chemical diffusion and oxygen exchange of LaNi0.4Fe0.6O3-δ ceramics

Jianying CHENa,b,e( ), Vladimir VASHOOKb, Dmytro M. TROTSc, Shaorong WANGa, Ulrich GUTHb,d
Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China
Dresden University of Technology, D-01062 Dresden, Germany
Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany
Meinsberg Kurt-Schwabe Research Institute, Kurt-Schwabe-Straße 4, D-04720 Ziegra-Knobelsdorf, Germany
Shanghai Nanotechnology Promotion Center, Shanghai, China
Show Author Information

Abstract

Oxygen surface exchange and oxygen chemical diffusion coefficients of LaNi0.4Fe0.6O3-δ ceramics are determined via conductivity relaxation method after stepwise change of temperature in the range of 700–950 ℃ in air and Ar/O2 gas flow at oxygen partial pressures ( pO2) of 4 Pa, 18 Pa, 37 Pa, 47 Pa and 59 Pa. The highest conductivity (about 160 S·cm-1) is found at 950 ℃ in air. No oxygen exchange (δ = 0) below 700 ℃ is observed in the investigated pO2 range. The oxygen exchange coefficients determined in reduction mode are higher than those determined in oxidation mode. This is explained by clusterization of oxygen vacancies on the surface of the sample investigated in oxidation mode. The opposite tendency is found for chemical diffusion coefficients. Unlike surface, the oxygen vacancies of the volume region are probably not clustered and have predetermined the higher oxygen diffusion mobility of the sample treated in oxidation mode.

Keywords

oxygen non-stoichiometryconductivitychemical diffusion coefficientsurface exchange coefficient

References

[1]
Atkinson A, Barnett S, Gorte RJ, et al. Advanced anodes for high-temperature fuel cells. Nat Mater 2004, 3:17-27.
Crossref Google Scholar
[2]
Chiba R, Yoshimura F, Sakurai Y. An investigation of LaNi1−xFexO3 as a cathode material for solid oxide fuel cells. Solid State Ionics 1999, 124:281-288.
Crossref Google Scholar
[3]
Zhen YD, Tok AIY, Jiang SP, et al. La(Ni,Fe)O3 as a cathode material with high tolerance to chromium poisoning for solid oxide fuel cells. J Power Sources 2007, 170:61-66.
Crossref Google Scholar
[4]
Orui H, Watanabe K, Chiba R, et al. Application of LaNi(Fe)O3 as SOFC cathode. J Electrochem Soc 2004, 151:A1412-A1417
Crossref Google Scholar
[5]
Millar L, Taherparvar H, Filkin N, et al. Interaction of (La1-xSrx)1-yMnO3–Zr1-zYzO2-d cathodes and LaNi0.6Fe0.4O3 current collecting layers for solid oxide fuel cell application. Solid State Ionics 2008, 179:732-739.
Crossref Google Scholar
[6]
Kostogloudis GCh, Tsiniarakis G, Ftikos Ch. Chemical reactivity of perovskite oxide SOFC cathodes and yttria stabilized zirconia. Solid State Ionics 2000, 135:529-535.
Crossref Google Scholar
[7]
Chiba R, Yoshimura F, Sakurai Y. Extended abstracts of the 23rd Symposium on Solid State Ionics in Japan. 1997, 2A06: 91.
[8]
Huijsman JPP, van Berkel FPF, Christie GM. Intermediate temperature SOFC—A promise for the 21st century. J Power Sources 1998, 71:107-110.
Crossref Google Scholar
[9]
Chen J, Wang S, Wen T, et al. Optimization of LaNi0.6Fe0.4O3-δ cathode for intermediate temperature solid oxide fuel cells. J Alloys Compd 2009, 487:377-381.
Crossref Google Scholar
[10]
Wang S, Kato T, Nagata S, et al. Performance of a La0.6Sr0.4Co0.8Fe0.2O3–Ce0.8Gd0.2O1.9–Ag cathode for ceria electrolyte SOFCs. Solid State Ionics 2002, 146:203-210.
Google Scholar
[11]
Wang S, van der Heide PAW, Chavez C, et al. An electrical conductivity relaxation study of La0.6Sr0.4Fe0.8Co0.2O3−δ. Solid State Ionics 2003, 156:201-208.
Crossref Google Scholar
[12]
Yasuda I, Hishinuma M. Electrical conductivity and chemical diffusion coefficient of Sr-doped lanthanum chromites. Solid State Ionics 1995, 80:141-150.
Crossref Google Scholar
[13]
Raj ES, Kilner JA, Irvine JTS. Oxygen diffusion and surface exchange studies on (La0.75Sr0.25)0.95Cr0.5Mn0.5O3−δ. Solid State Ionics 2006, 177:1747-1752.
Google Scholar
[14]
Adler SB. Factors governing oxygen reduction in solid oxide fuel cell cathodes. Chem Rev 2004, 104:4791-4844.
Crossref Google Scholar
[15]
Preis W, Bucher E, Sitte W. Oxygen exchange measurements on perovskites as cathode materials for solid oxide fuel cells. J Power Sources 2002, 106:116-121
Crossref Google Scholar
[16]
Knapp M, Baehtz C, Ehrenberg H, et al. The synchrotron powder diffractometer at beamline B2 at HASYLAB/DESY: Status and capabilities. J Synchrotron Rad 2004, 11:328-334.
Crossref Google Scholar
[17]
Vashook V, Vasylechko L, Zosel J, et al. Crystal structure and electrical conductivity of lanthanum–calcium chromites–titanates La1−xCaxCr1−yTiyO3−δ (x = 0–1, y = 0–1). J Solid State Chem 2004, 177:3784-3794.
Crossref Google Scholar
[18]
Teske K, Ullmann H, Trofimenko N. Thermal analysis of transition metal and rare earth oxide system-gas interactions by a solid electrolyte-based coulometric technique. J Therm Anal 1997, 49:1211-1220.
Crossref Google Scholar
[19]
Carter RE, Roth WL. Ionic conductivity and vacancy ordering in calcia stabilized zirconia. Report series 63-RL-3479M. General Electric Research Laboratory, Schenectady, NY, 1963.
[20]
Yasuda I, Hishinuma M. Electrical conductivity and chemical diffusion coefficient of strontium-doped lanthanum manganites. J Solid State Chem 1996, 123:382-390.
Crossref Google Scholar
[21]
Vashook V, Al Daroukh M, Ullmann H. Oxygen ion diffusion in perovskite-type oxides determined by permeation and by relaxation measurements. Ionics 2001, 7:59-66.
Crossref Google Scholar
[22]
Petrov AN, Kononchuk OF, Andreev AV, et al. Crystal structure, electrical and magnetic properties of La1−xSrxCoO3−y. Solid State Ionics 1995, 80:189-199.
Crossref Google Scholar
[23]
Stevenson JW, Armstrong TR, Carneim RD, et al. Electrochemical properties of mixed conducting perovskites La1−xMxCo1−yFeyO3−δ (M = Sr, Ba, Ca). J Electrochem Soc 1996, 143:2722-2729.
Crossref Google Scholar
[24]
Kostogloudis GCh, Ftikos Ch. Structural, thermal and electrical properties of Pr0.5Sr0.5Co1−yNiyO3−δ perovskite-type oxides. Solid State Ionics 1998, 109:43-53.
Crossref Google Scholar
[25]
Yoo H-I, Lee C-E. Conductivity relaxation patterns of mixed conductor oxides under a chemical potential gradient. Solid State Ionics 2009, 180:326-337.
Crossref Google Scholar
[26]
Van Roosmalen JAM, Cordfunke EHP. A new defect model to describe the oxygen deficiency in perovskite-type oxides. J Solid State Chem 1991, 93:212-219.
Crossref Google Scholar
[27]
Cox-Galhotra RA, McIntosh S. Unreliability of simultaneously determining kchem and Dchem via conductivity relaxation for surface-modified. Solid State Ionics 2010, 181:1429-1436.
Crossref Google Scholar
[28]
Rebello J, Vashook V, Trots D, et al. Thermal stability, oxygen non-stoichiometry, electrical conductivity and diffusion characteristics of PrNi0.4Fe0.6O3−δ, a potential cathode material for IT-SOFCs. J Power Sources 2011, 196:3705-3712.
Crossref Google Scholar
Journal of Advanced Ceramics
Volume 3 Issue 3,
September 2014
Pages 240-249
DOI: 10.1007/s40145-014-0116-y
Cite this article:
CHEN J, VASHOOK V, TROTS DM, et al. Chemical diffusion and oxygen exchange of LaNi0.4Fe0.6O3-δ ceramics. Journal of Advanced Ceramics, 2014, 3(3): 240-249. https://doi.org/10.1007/s40145-014-0116-y

814

Views

23

Downloads

7

Crossref

N/A

Web of Science

7

Scopus

0

CSCD

Altmetrics
Received: 09 April 2014
Revised: 19 June 2014
Accepted: 22 June 2014
Published: 02 September 2014
© The author(s) 2014

Open Access: This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.
Return