Synthesis and electrochemical performance of La0.6Ca0.4Fe1−xNixO3 (x=0.1, 0.2, 0.3) material for solid oxide fuel cell cathode

Ortiz‐Vitoriano, Nagore; Larramendi, Idoia Ruiz de; Larramendi, J.I. Ruiz de; Arriortua, Marı́a I.; Rojo, Teófilo

doi:10.1016/j.jpowsour.2008.12.009

Cited by 25 publications

(15 citation statements)

References 31 publications

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“…This crystal structure is similar to that of LaFeO 3 [18] and Ln 0.6 Ca 0.4 O 3 crystal structures [19]. The lattice parameters were obtained to be a = 5.5668 Å, b = 7.7430 Å and c = 5.4764 Å from FullProf analysis and they are close to those reported in literature [7].…”

Section: Structuresupporting

confidence: 85%

“…It is likely that, the electronic compensation mechanism is dominant at low temperatures (T b T max ) and high partial oxygen pressures while the ionic compensation mechanism conversely dominates at high temperatures (T N T max ) and low oxygen partial pressures [4]. Such a phenomenon is well-known in LCFN bulk crystal [7,11,26]. Both T max and the normalized resistance decrease by increase in temperature up to 40 Pa (see Fig.…”

Section: Electrical Propertiesmentioning

confidence: 88%

“…Perovskite materials with mixed ionic-electronic conductivity (MIEC) are promising candidate to overcome the hurdles of SOFCs cathodes [6]. They have the ABO 3 general formula in which A site occupied usually by rare earth, alkaline-earth, alkali or other large ions and B site may be filled with transition metal cations [7]. Compared with cobalt-based cathode materials such as Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3 − δ and Ln 1 −x A x CoO 3 − δ (Ln = lanthanides) typically like La 1 − x Sr x CoO 3 despite having excellent electrochemical performance, suffers from problems such as a very high thermal expansion coefficient and high reactivity with the SOFC electrolyte material (yttria stabilized zirconia (YSZ)), which makes it necessary to apply additional barrier layers or to use alternative solid electrolytes in the cell.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, calcium could be a good candidate because of the similarity of its ionic radius with La 3+ which could give rise to higher stability than that of strontium substituted phases. Taking into account these considerations, although La 0.6 Ca 0.4 Fe y Ni 1 − y O 3 − δ presents a resistance slightly higher, its great stability and low chemical interaction turn it into an interesting option as cathode of intermediate temperature SOFC [7,10]. Additionally, to explore another SOFC cathodes with low cost and sufficient ionic conductivity some approaches have been proposed to improve the perovskite cathode performance at low temperatures such as the reduction of thickness of cathodes to reduce Ohmic resistance [1].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Pulsed laser deposition of La 0.6 Ca 0.4 Fe 0.8 Ni 0.2 O 3−δ thin films on SrTiO 3 : Preparation, characterization and electrical properties

et al. 2014

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Section: Structuresupporting

confidence: 85%

Section: Electrical Propertiesmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Pulsed laser deposition of La 0.6 Ca 0.4 Fe 0.8 Ni 0.2 O 3−δ thin films on SrTiO 3 : Preparation, characterization and electrical properties

et al. 2014

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“…As a consequence, they display significant oxygen permeability and have potential applications in gas separation as inorganic membranes, oxygen pumps, solid oxide fuel cells, oxidative coupling of methane as catalyst, oxygen sensors, etc. [2][3][4][5][6][7]. Their structural, electrical and other physico-chemical properties can be further controlled and/or improved by varying composition, preparation method, and treatment processes [8].…”

Section: Introductionmentioning

confidence: 99%

On the structural stability and oxygen permeation behavior of inorganic SrCo0.8Fe0.2O3−δ membranes

Kashyap

Jaiswal

Kumar

2016

Ionics

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The high oxygen permeability combined with reasonable structural stability of perovskite-type ABO 3−δ compounds is vital for their potential applications in gas separation, solid oxide fuel cells, sensors, etc. Hence, an attempt is made to develop SrCo 0.8 Fe 0.2 O 3−δ -based dense membranes with sol-gel-derived oxalates and study their phase stability and oxygen permeation. While X-ray diffraction confirms the presence of a perovskite-type cubic phase above 800°C, Xray photoelectron spectroscopy reveals the presence of cobalt and iron in 3+ and 4+ oxidation states with O 2 2− , O 2 − and O − species. The electrical conductivity increases up to a characteristic temperature and decreases slowly thereafter via pronounced carrier scattering. A 1.5-mm-thick membrane disp l a y s r e a s o n a b l e o x y g e n p e r m e a b i l i t y o f 1.05 × 10 −6 mol cm −2 s −1 at 900°C but has inadequate stability. Partial substitution of iron with zirconium is shown to improve permeability and stability significantly. Thus, SrCo 0.8 Fe 0.15 Zr 0.05 O 3−δ membrane shows promise for oxygen permeation purposes.

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Cobalt‐Free Perovskite Cathodes for Solid Oxide Fuel Cells

et al. 2019

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The past decade has observed rapid growth in the development of cobalt-free perovskite cathodes, which provide enhanced structure and operational stability at the operating temperature of intermediate temperature solid oxide fuel cells (IT-SOFC, 600-800°C) compared to its cobalt-containing counterpart. This Review aims to present a comprehensive overview on the status and advances of the existing cobalt-free perovskite cathodes for IT-SOFCs by discussing electrochemical behaviors, thermal expansion properties, stabilities as well as the oxygen ionic and the electronic transport properties of these cobalt-free perovskite cathode compositions, with primary emphasis on the relationship between the electrochemical performances and the materials science-related factors. Among various cobalt-free perovskite cathodes presented in this Review, niobium-doped compositions generally show lower polarization resistances relative to other cathode compositions.[a] Dr. performance and materials science-related factors. The review is divided into four sections. This first section justifies the SOFC technology significance and its context. The second section features the pertaining aspects on the development of cobaltfree perovskite cathodes according to electrochemical performance, chemical compatibility with electrolytes, thermal expansion mismatch, and overview of the composite perovskite cathodes. The third section provides comparative insights into the performances of single, double, and composite cobalt-free perovskite cathodes focusing into thermal and electrochemical parameters, i. e., thermal expansion coefficient (TEC), total electrical conductivity, polarization resistance and its corresponding activation energy. Synthesis routes, lattice cell parameters, oxygen content, and other available data are also included. The fourth section, in turn, overviews, challenges and outlook for further research and development of cobalt-free perovskite cathodes and concludes the review.

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Synthesis and electrochemical performance of La0.6Ca0.4Fe1−xNixO3 (x=0.1, 0.2, 0.3) material for solid oxide fuel cell cathode

Cited by 25 publications

References 31 publications

Pulsed laser deposition of La 0.6 Ca 0.4 Fe 0.8 Ni 0.2 O 3−δ thin films on SrTiO 3 : Preparation, characterization and electrical properties

Pulsed laser deposition of La 0.6 Ca 0.4 Fe 0.8 Ni 0.2 O 3−δ thin films on SrTiO 3 : Preparation, characterization and electrical properties

On the structural stability and oxygen permeation behavior of inorganic SrCo0.8Fe0.2O3−δ membranes

Cobalt‐Free Perovskite Cathodes for Solid Oxide Fuel Cells

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