Development of lanthanum-doped praseodymium cuprates as cathode materials for intermediate-temperature solid oxide fuel cells

Лысков, Н. В.; Kolchina, L. M.; Galin, Monique; Мазо, Г. Н.

doi:10.1016/j.ssi.2018.02.017

Cited by 15 publications

(4 citation statements)

References 21 publications

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“…[ 40,114 ] Segregation of Co is considered less critical, but substitution of Co might contribute to lower cost of SOCs, underlining the interest in Co‐free materials. [ 115–117 ] Whereas the reported performance of many Sr‐ or Co‐free air electrodes is inferior compared with state‐of‐the‐art materials, (La,Ca)FeO 3–δ was found to provide fast oxygen exchange [ 118,119 ] and most recently also high performance in single‐cell measurements, [ 120 ] as shown in Table 3.…”

Section: Soc Processing Testing Setups and Materialsmentioning

confidence: 99%

“…[40,114] Segregation of Co is considered less critical, but substitution of Co might contribute to lower cost of SOCs, underlining the interest in Co-free materials. [115][116][117] Whereas the reported performance of many Sr-or Co-free air electrodes is inferior compared with state-of-the-art materials, (La,Ca)FeO 3-δ was found to provide fast oxygen exchange [118,119] and most recently also high performance in single-cell measurements, [120] as shown in Table 3. Some other perovskite types and structurally related materials have been attracting attention due to enhanced surface exchange or oxygen-ion transport properties, smaller CTE mismatch, and increased tolerance against Cr species.…”

Section: Air Electrodesmentioning

confidence: 99%

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Performance Benchmark of Planar Solid Oxide Cells Based on Material Development and Designs

et al. 2021

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Solid oxide cell (SOC) technology currently attracts great attention due to its unique potential for substantially contributing to a carbon‐neutral power supply. The variety in possible designs and applications—covering oxygen ion and proton conductors and the ability to convert surplus electricity to easily storable synthetic fuels, as well as to produce electricity from these fuels according to demand and availability—provides the excellent position of SOCs with regard to decentralized power generation and distribution. Herein, a reference work on cell performance is provided by highlighting specific advantages of the different cell types, designs, and materials with regard to certain operating conditions, including challenges concerning operational modes, processing, and degradation. In conjunction with a critical examination in terms of relevance and technical feasibility, the data provided enable an assessment of the general potential of the cell types for technology development and connect scientific research to industrial considerations.

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Section: Soc Processing Testing Setups and Materialsmentioning

confidence: 99%

Section: Air Electrodesmentioning

confidence: 99%

Performance Benchmark of Planar Solid Oxide Cells Based on Material Development and Designs

et al. 2021

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“…31,32 Recently, the rare earth metals, the praseodymium-based compounds are being considered as the cathode materials for FCs applications. 33 For cathodic processes like oxygen reduction reactions, praseodymiumbased materials were found to be substantially favourable because praseodymium metal is enriched with greater electronic conductivity having mixed valance states of 3 + & 4 +. 34 Moreover, the gamma alumina is used as substrate materials for electro-catalysts because of its greater mechanical properties and stability, it presents high surface for dispersion.…”

Section: Introductionmentioning

confidence: 99%

Highly effective bi‐functional electrochemical activity of Ag ₂ O‐PrO ₂ / γ‐Al ₂ O ₃ electrocatalysts towards OER and ORR

Khan

Ahmad

Molina-Luque

et al. 2022

Intl J of Energy Research

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The oxygen reduction and evolution reaction (ORR/OER), are the keystones for many energy generating and storage devices, have influence with many electrocatalytic reactions. The sluggish kinetics of these reaction is a challenging situation on the surface of electrodes which imposes large over-potential and affects the energy output of fuel cells. Although the platinum-based electrode materials have excellent activity toward ORR/OER but their high cost limits commercialization of fuel cells. To deal with this problem, platinum-free electrode materials has aroused the considerations of scientists. The present work is proposed to study the oxygen reduction reaction and water oxidation on the surface of xAg 2 O-yPrO 2 /γ-Al 2 O 3 /Glassy-Carbon. The ORR was studied electrochemically via cyclic voltammetry on the surface of these nano-catalysts while the OER was investigated via cyclic voltammetry and linear sweep voltammetry in alkaline media. The mechanism of ORR on catalysts surface was enquired and the results indicate that ORR followed two electrons pathway in case of 10PrO 2 /γ-Al 2 O 3 / Glassy-Carbon while four electrons reduction pathway is identified on surface of others catalysts which divulged that addition of silver with praseodymium shifted the mechanism from 2e À to 4e À pathway. The electrocatalysts featured the stability during multiple scans and no corrosion of electrode in OER/ORR is observed.Different kinetic parameters for both reactions are determined which affirmed that both ORR and OER on the active surface of catalysts is irreversible and diffusion controlled. 4Ag 2 O-6PrO 2 /γ-Al 2 O 3 is indicated to be proficient electro-catalyst among other members of the series, having greater value of mass transport and diffusion coefficients. The bi-functionality of all electrocatalysts are verified by their electrochemical responses in alkaline medium. The catalytic reduction of oxygen and oxidation of water by these electro-catalysts imitates their potential as electrode material in batteries and unitized regenerative fuel cells (URFC) technology for energy production as substitute of platinum electrode.

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“…In pursuit of solid oxide fuel cells (SOFCs) with higher power densities, there has especially been an intensive effort to develop cathode materials with new chemistries and microstructures (Lyskov et al, 2018;Tatko et al, 2015;Li et al, 2014). To evaluate the performance of the developed cathode materials in the laboratory scale, electrochemical testing using single button cell or symmetrical half-cell configurations has been the widely adopted approach (Chen et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Gümüş Akim Toplayici Mürekkepleri̇nde Fri̇t Bulunmasinin Kati Oksi̇t Yakit Hücresi̇ Katotlarinin Elektroki̇myasal Performansina Etki̇si̇

Demirkal

Büyükaksoy

2019

Mühendislik Bilimleri Ve Tasarım Dergisi

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Silver (Ag) inks are often used as precursors to form current collector layers on the intermediate-temperature solid oxide fuel cell (SOFC) cathodes. It has been common practice to add glassy phase (frit) particles into the Ag inks to achieve good adhesion between the current collector and the cathode layers upon firing. However, insufficient attention has been given to the effects of frit content on the microstructure and the current collecting properties of Ag layers. This study presents the effect of frit addition on the measured electrochemical performance of La0.6Sr0.4FeO3 (LSF) thin film cathodes. Microstructural analyses reveal that frit addition significantly densifies the Ag current collector layer. The glassy phase replacing Ag reduces the contact area between the Ag particles and the LSF thin film cathode, resulting in increased ohmic resistances. The glassy phase also seals the electrocatalytic surface of the LSF thin film, thus enhancing the cathode polarization resistances. Electrochemical impedance spectroscopy measurements on symmetrical half-cells reveal that ohmic resistances matching the resistivity of the yttria stabilized zirconia electrolyte (YSZ) and acceptable cathode polarization resistances (e.g., 0.5 Ωcm2 at 700℃ in air) can be obtained when frit-free Ag current collector inks are used.

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Development of lanthanum-doped praseodymium cuprates as cathode materials for intermediate-temperature solid oxide fuel cells

Cited by 15 publications

References 21 publications

Performance Benchmark of Planar Solid Oxide Cells Based on Material Development and Designs

Performance Benchmark of Planar Solid Oxide Cells Based on Material Development and Designs

Highly effective bi‐functional electrochemical activity of Ag ₂ O‐PrO ₂ / γ‐Al ₂ O ₃ electrocatalysts towards OER and ORR

Gümüş Akim Toplayici Mürekkepleri̇nde Fri̇t Bulunmasinin Kati Oksi̇t Yakit Hücresi̇ Katotlarinin Elektroki̇myasal Performansina Etki̇si̇

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Development of lanthanum-doped praseodymium cuprates as cathode materials for intermediate-temperature solid oxide fuel cells

Cited by 15 publications

References 21 publications

Performance Benchmark of Planar Solid Oxide Cells Based on Material Development and Designs

Performance Benchmark of Planar Solid Oxide Cells Based on Material Development and Designs

Highly effective bi‐functional electrochemical activity of Ag 2 O‐PrO 2 / γ‐Al 2 O 3 electrocatalysts towards OER and ORR

Gümüş Akim Toplayici Mürekkepleri̇nde Fri̇t Bulunmasinin Kati Oksi̇t Yakit Hücresi̇ Katotlarinin Elektroki̇myasal Performansina Etki̇si̇

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Highly effective bi‐functional electrochemical activity of Ag ₂ O‐PrO ₂ / γ‐Al ₂ O ₃ electrocatalysts towards OER and ORR