Oxygen transportation, electrical conductivity and electrochemical properties of layered perovskite SmBa0.5Sr0.5Co2O5+δ

Subardi, Adi; Chen, Ching-Cheng; Fu, Yen‐Pei

doi:10.1016/j.ijhydene.2016.11.123

Cited by 12 publications

(7 citation statements)

References 62 publications

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“…Reducing the operating temperature of SOFCs from high (800-1000°C) to intermediate (500-800°C) temperature is a main target in the present SOFC research. Hence, cost reduction and wider material choices for cell components are obtained [1,2]. However, high cathode polarization resistance (R p ) at reduced temperature limited the performance of SOFC [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical performance of sol-gel derived La0.6S0.4CoO3-δ cathode material for proton-conducting fuel cell: A comparison between simple and advanced cell fabrication techniques

Osman

Yusoff

Baharuddin

et al. 2018

PAC

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In this study, the effects of different fabrication techniques on the electrochemical performance of solgel derived La 0.6 Sr 0.4 CoO 3-δ (LSC) cathode material for intermediate temperature proton-conducting fuel cells were investigated. Single-phase, sub-micron LSC powder was used to prepare cathode slurries by a simple grinding-stirring (G-S) technique and an advanced ball milling-triple roll milling (BM-TRM) technique. The prepared G-S and BM-TRM cathode slurries were brush painted and screen printed, respectively, onto separate BaCe 0.54 Zr 0.36 Y 0.1 O 2.95 (BCZY) proton-conducting electrolytes to fabricate symmetrical cells of LSC|BCZY|LSC. The thickness of LSC cathode layer prepared by brush painting and screen printing was 17 ± 0.5 µm and 7 ± 0.5 µm, and the surface porosity of the layers was 32% and 27%, respectively. Electrochemical impedance spectroscopy analysis revealed that the layer deposited by screen printing had lower area specific resistance measured at 700°C (0.25 Ω cm 2) than the layer prepared by brush painting of G-S slurry (1.50 Ω cm 2). The enhanced LSC cathode performance of the cell fabricated using BM-TRM assisted with screen printing is attributed to the improved particle homogeneity and network in the prepared slurry and the enhanced particle connectivity in the screen printed film.

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Section: Introductionmentioning

confidence: 99%

Electrochemical performance of sol-gel derived La0.6S0.4CoO3-δ cathode material for proton-conducting fuel cell: A comparison between simple and advanced cell fabrication techniques

Osman

Yusoff

Baharuddin

et al. 2018

PAC

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“…Linearitas plot Arrhenius mengilustrasikan bahwa katoda SBSC73 relatif stabil terhadap suhu. Nilai aktivasi tersebut lebih rendah dibanding dengan penelitian sebelumnya yang menggunakan katoda perovskit ganda SmBa0,5Sr0,5Co2O5+δ [28] , hasil ini menunjukkan bahwa SBSC73 adalah kandidat katoda untuk SOFC karena aktivitas elektrokatalitiknya yang tinggi.…”

Section: Ea Rtunclassified

Ekspansi Termal, Oxygen Content, dan Sifat Elektrokimia Oksida SmBa0.5Sr0.5Co2O5+δ (70%) + SDC (30%) Sebagai Katoda SOFC

Subardi

2022

J.Ris.Kim.

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The thermal properties of the double perovskite SmBa0.5Sr0.5Co2O5+δ (70%) + SDC (30%) have been investigated as potential cathodes for intermediate-temperature solid oxide fuel cells (IT-SOFC). This study also includes the oxygen content and electrochemical performance of long-term tests carried out to evaluate the electrochemical stability. Cathode powder is fabricated by a simple and relatively inexpensive solid-state reaction. Oxygen content decreased gradually from room temperature to 800oC by 18.3%. Doping 30% SDC into SBSC oxide can reduce the thermal expansion coefficients (TEC) value from 19.80 x 10-6 (K-1) to 18.17 x 10-6 (K-1) or a decrease of 8.23%. The activation energy (Ea) identified by the electrochemical impedance spectroscopy (EIS), low field (LF), and high field (HF) techniques were 125.3 kJ mol-1, 60.6 kJ mol-1, and 62.5 kJ mol-1, respectively. The SBSC73|SDC|SBSC73 symmetric cell test for 96 hours at 600oC showed an increase in the average polarization resistance value of 0.30% h-1. The cathode grains are evenly distributed with a size of 2-3 µm and tend to be porous. These results exhibit that SmBa0.5Sr0.5Co2O5+δ (70%) + SDC (30%) is a promising cathode material for IT-SOFCs.

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“…The oxygen transport properties of SmBa 0.5 Sr 0.5 Co 2 O 5+δ as a potential cathode material for IT–SOFCs were investigated in [ 127 ]. The D chem values for SmBa 0.5 Sr 0.5 Co 2 O 5+δ were equal to 2.6 × 10 −6 , 9.1 × 10 −6 , and 1.8 × 10 −5 cm 2 s −1 at 773, 873, and 973 K, respectively.…”

Section: Electrochemical Performance Of Layered Oxygen-deficient Perovskitesmentioning

confidence: 99%

Layered Oxygen-Deficient Double Perovskites as Promising Cathode Materials for Solid Oxide Fuel Cells

et al. 2021

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Development of new functional materials with improved characteristics for solid oxide fuel cells (SOFCs) and solid oxide electrolysis cells (SOECs) is one of the most important tasks of modern materials science. High electrocatalytic activity in oxygen reduction reactions (ORR), chemical and thermomechanical compatibility with solid electrolytes, as well as stability at elevated temperatures are the most important requirements for cathode materials utilized in SOFCs. Layered oxygen-deficient double perovskites possess the complex of the above-mentioned properties, being one of the most promising cathode materials operating at intermediate temperatures. The present review summarizes the data available in the literature concerning crystal structure, thermal, electrotransport-related, and other functional properties (including electrochemical performance in ORR) of these materials. The main emphasis is placed on the state-of-art approaches toimproving the functional characteristics of these complex oxides.

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Oxygen transportation, electrical conductivity and electrochemical properties of layered perovskite SmBa0.5Sr0.5Co2O5+δ

Cited by 12 publications

References 62 publications

Electrochemical performance of sol-gel derived La0.6S0.4CoO3-δ cathode material for proton-conducting fuel cell: A comparison between simple and advanced cell fabrication techniques

Electrochemical performance of sol-gel derived La0.6S0.4CoO3-δ cathode material for proton-conducting fuel cell: A comparison between simple and advanced cell fabrication techniques

Ekspansi Termal, Oxygen Content, dan Sifat Elektrokimia Oksida SmBa0.5Sr0.5Co2O5+δ (70%) + SDC (30%) Sebagai Katoda SOFC

Layered Oxygen-Deficient Double Perovskites as Promising Cathode Materials for Solid Oxide Fuel Cells

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