Characteristics of Pr1−xMxMnO3 (M = Ca, Sr) as cathode material in solid oxide fuel cells

Rim, Hyung‐Ryul; Jeung, Soon-Ki; Jung, Euney; Lee, Ju-Seong

doi:10.1016/s0254-0584(98)80006-0

Cited by 38 publications

(9 citation statements)

References 11 publications

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“…The fact that the LCC cathode exhibits lower overpotential compared to LBC and LSC, implying a higher electrocatalytic activity which may be related to higher oxygen ionic conductivity and finer interfacial adhesion for its smallest TEC mismatch with SDC electrolyte ( Table 1). The results are in agreement with the previous report that Ca-doped PrMnO 3 had lower overpotential than Sr-doped PrMnO 3 [27]. The lowest polarization overpotential of 52 mV was measured for LCC at a current density of 0.1 A/cm 2 .…”

Section: Impedance Spectroscopysupporting

confidence: 92%

Thermal expansion and electrochemical properties of La0.7AE0.3CuO3−δ (AE=Ca, Sr, Ba) cathode materials for IT-SOFCs

et al. 2007

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Alkaline earth metals (Ca, Sr, Ba) substituted lanthanum copper oxides were investigated to evaluate their potentials as cathode materials for intermediate temperature solid oxide fuel cell (IT-SOFC). The crystal structure, thermal expansion and electrochemical performance of La 1−x AE x CuO 3−δ (x=0.3, AE=Ca, Sr, Ba) were studied by X-ray diffraction, thermal dilatometer and impedance spectra, respectively. By lowering the size of the A-site cation in ABO 3 perovskite, a lower thermal expansion and polarization resistance were obtained for Ca-doped LaCuO 3−δ cathode which showed an area specific resistance of 0.19 Ω cm −2 under open circuit potential conditions at 800°C, and a polarization overpotential of 52 mV at a current density of 0.1 A/cm 2 at 700°C, being a potential candidate of cathode material for IT-SOFCs.

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Section: Impedance Spectroscopysupporting

confidence: 92%

Thermal expansion and electrochemical properties of La0.7AE0.3CuO3−δ (AE=Ca, Sr, Ba) cathode materials for IT-SOFCs

et al. 2007

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“…H.-R. Rim et al reported similar results with calcium and strontium-doped praseodymium manganite powders prepared as cathode materials for SOFC applications [21]. It has been also suggested that the increasing rate of interphase oxygen exchange at either electrode/gas or electrolyte/gas surfaces of praseodymiumcontaining oxides is determined by their specific electrocatalytic properties, which directly depend on the unusual valence state of praseodymium ions and the formation of oxygen vacancies [22,23].…”

Section: Introductionmentioning

confidence: 76%

Nano-sized Pr0.8Sr0.2Co1-xFexO3 powders prepared by single-step combustion synthesis for solid oxide fuel cell cathodes

2009

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Different sets of perovskite-type oxides of general formula Pr 0.8 Sr 0.2 Co 1-x Fe x O 3-δ (x=0.0, 0.2, 0.5, 0.8 and 1.0) were successfully prepared by low-cost single-step combustion synthesis at low temperatures based on the auto-ignition reaction of a nitrate solution in the presence of citric acid. Thermogravimetric and differential thermal analysis was carried out on nitrate-citrate precursors to determine the perovskite-phase formation process. The results revealed that the nitrate-citrate precursor exhibited self-propagating combustion behavior. Pr 0.8 Sr 0.2 Co 1-x Fe x O 3-δ powders showed an orthorhombic single-phase, with their unit cell volume increasing as a function of the Fe content (x). Scanning electron microscopy observations showed that the prepared powders were nanocrystalline. The Pr 0.8 Sr 0.2 Co 1-x Fe x O 3-δ powders were characterized as fuel cell electrodes on Ce 0.8 Sm 0.2 O 2-δ pellets in symmetrical cells, and the electrochemical properties of the electrode/electrolyte interfaces were investigated using electrochemical impedance spectroscopy (EIS) as a function of the temperature, Fe content (x) and oxygen partial pressure.

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“…Most studies on manganites have focused on doping the lanthanide site with Sr. In terms of chemical compatibility and electrical conductivity, however, the use of calcium as a dopant can offer very promising results, as in the case of Pr 0.7 Ca 0.3 MnO 3-δ , which does not react with the electrolyte and has a maximum conductivity of 266 S/cm [29].…”

Section: Cathode Materialsmentioning

confidence: 99%

Designing Perovskite Oxides for Solid Oxide Fuel Cells

Larramendi¹,

Ortiz‐Vitoriano²,

Bautista³

et al. 2016

Perovskite Materials - Synthesis, Characterisation, Properties, and Applications

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Perovskite-type oxides with the general formula ABO 3 have been widely studied and are utilized in a large range of applications due to their tremendous versatility. In particular, the high stability of the perovskite structure compared to other crystal arrangements and its ability, given the correct selection of A and B cations, to maintain a large oxygen vacancy concentration makes it a good candidate as electrode in solid oxide fuel cell (SOFC) applications. Utilizing this novel structure allows the engineering of advanced, effective electrolytes for such devices. This review details the development of current state-of-the-art perovskite-type oxides for solid oxide fuel cell (SOFC) applications.

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Characteristics of Pr1−xMxMnO3 (M = Ca, Sr) as cathode material in solid oxide fuel cells

Cited by 38 publications

References 11 publications

Thermal expansion and electrochemical properties of La0.7AE0.3CuO3−δ (AE=Ca, Sr, Ba) cathode materials for IT-SOFCs

Thermal expansion and electrochemical properties of La0.7AE0.3CuO3−δ (AE=Ca, Sr, Ba) cathode materials for IT-SOFCs

Nano-sized Pr0.8Sr0.2Co1-xFexO3 powders prepared by single-step combustion synthesis for solid oxide fuel cell cathodes

Designing Perovskite Oxides for Solid Oxide Fuel Cells

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