INFLUENCE OF SINTERING TEMPERATURE ON THE POLARIZATION RESISTANCE OF LaO20.6SrO20.4CoO20.2FeO20.8O3-δ - SDC CARBONATE COMPOSITE CATHODE

Baharuddin, Nurul Akidah; Muchtar, Andanastuti; Somalu, Mahendra Rao; Ali, Muhammed; Rahman, Hamidah Abdul

doi:10.13168/cs.2016.0017

Cited by 18 publications

(10 citation statements)

References 19 publications

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“…The reduction of operating temperature not only lowers the operational cost but also extends the cell stability and durability for effective commercialisation of SOFCs. Unfortunately, a lower operating temperature (< 600°C) deteriorates the electrochemical performance due to large ohmic and anode polarisation resistance [1,2]. High-performance composite anodes are urgently needed to accelerate the development of IT-LT-SOFCs.…”

Section: Introductionmentioning

confidence: 99%

EFFECTS OF NiO LOADING AND PRE-CALCINATION TEMPERATURE ON NiO-SDCC COMPOSITE ANODE POWDER FOR LOW-TEMPERATURE SOLID OXIDE FUEL CELLS

Hoa

Rahman

Somalu³

2017

Ceramics - Silikaty

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The microstructural and thermal characteristics of NiO-samarium-doped ceria carbonate (NiO-DCC) composite powders have been explored in terms of NiO loading and pre-calcination temperature. NiO-SDCC composite powders were intimately mixed via fast ball-milling using different NiO loadings (50-70 wt. %) and subjected to various pre-calcination temperatures (600-800°C). Subsequently, the pre-calcined powders were then used to fabricate composite pellets using a uniaxial press and sintered at a low temperature of 600°C. The crystalline phase, carbonate bonding, microstructure and thermal behaviour of the composite anode powders were investigated. The microstructure, porosity, and hardness of sintered composite pellets were also evaluated. All samples maintained their chemical compatibility and carbonate bonding after various processes. The findings indicated that the pre-calcination factor was more important than NiO loading in terms of powder and pellet morphologies as well as the thermal expansion behaviour. Moreover, the composite pellets prepared with composite powders pre-calcined at increasing temperatures exhibited an increase in porosity, but within an acceptable range (30-40 %). Overall, composite pellets fabricated with 50 wt. % NiO exhibited the optimum hardness values of 21-31 HV and the lowest thermal expansion of 12.2-12.7 × 10-6 K-1 .

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Section: Introductionmentioning

confidence: 99%

EFFECTS OF NiO LOADING AND PRE-CALCINATION TEMPERATURE ON NiO-SDCC COMPOSITE ANODE POWDER FOR LOW-TEMPERATURE SOLID OXIDE FUEL CELLS

Hoa

Rahman

Somalu³

2017

Ceramics - Silikaty

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“…Figure shows the average porosity of the SrFe 0.5 Ti 0.5 O 3‐δ perovskite cathode films sintered at temperatures ranging from 900°C to 1300°C. Without any introduction of pore former, the porosity fell at an acceptable range (20% to 40%) for SOFC electrodes . As the sintering temperature increased, the densification also increased; thus, the porosity decreased .…”

Section: Resultsmentioning

confidence: 98%

Effects of sintering temperature on the structural and electrochemical properties of SrFe_0.5Ti_0.5O_3‐δ perovskite cathode

Baharuddin

Muchtar

Somalu

et al. 2017

Int J Applied Ceramic Tech

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The effects of sintering temperature on the structural and electrochemical properties of SrFe 0.5 Ti 0.5 O 3-d perovskite cathode film was investigated. For the structural properties of SrFe 0.5 Ti 0.5 O 3-d film sintered at a temperature ranging from 900-1300°C, changes in surface and cross-sectional microstructure were studied. Surface porosity and micro hardness were analyzed. The relationship of the structural properties with the electrical and electrochemical performances of the SrFe 0.5-Ti 0.5 O 3-d film was examined. The high densification of the film sintered at 1300°C led to the better electrical conductivity of 16.38 S cm À1 than the 4.86 S cm À1 of the film sintered at 900°C at an operating temperature of 800°C. For the electrochemical performance, the SrFe 0.5 Ti 0.5 O 3-d film sintered at 1300°C gained a low area specific resistance (ASR) value of 38.70 O cm 2 at 800°C. The ASR further decreased to 0.99 O cm 2 for the thicker film sintered at the same temperature. K E Y W O R D S microstructure, perovskite, sintering, solid oxide fuel cell

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“…The authors note that the resulting electrode nano-microstructure will definitely enhance the cathodic performance, which is defined not only by the microstructure and porosity, but also by some degree of crystalline disorder around the electrode nanoparticles [78]. The sintering temperature of LSFC was further decreased in a study by Baharuddin et al [79] by introducing 50 wt% of carbonate electrolyte based on samarium-doped ceria (SDCC) into the electrode composition. An EPD suspension based on a mixture of ethanol and deionized water with polydiallyldimethylammonium chloride (PDADMAC) was used as a dispersing agent.…”

Section: Electrodeposition Of the Electrodes With Pore-formers And Development Of Oriented Structuresmentioning

confidence: 99%

Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

Калинина

Pikalova

2021

Materials

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Electrolytic deposition (ELD) and electrophoretic deposition (EPD) are relevant methods for creating functional layers of solid oxide fuel cells (SOFCs). This review discusses challenges, new findings and prospects for the implementation of these methods, with the main emphasis placed on the use of the ELD method. Topical issues concerning the formation of highly active SOFC electrodes using ELD, namely, the electrochemical introduction of metal cations into a porous electrode backbone, the formation of composite electrodes, and the electrochemical synthesis of perovskite-like electrode materials are considered. The review presents examples of the ELD formation of the composite electrodes based on porous platinum and silver, which retain high catalytic activity when used in the low-temperature range (400–650 °C). The features of the ELD/EPD co-deposition in the creation of nanostructured electrode layers comprising metal cations, ceramic nanoparticles, and carbon nanotubes, and the use of EPD to create oriented structures are also discussed. A separate subsection is devoted to the electrodeposition of CeO2-based film structures for barrier, protective and catalytic layers using cathodic and anodic ELD, as well as to the main research directions associated with the deposition of the SOFC electrolyte layers using the EPD method.

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INFLUENCE OF SINTERING TEMPERATURE ON THE POLARIZATION RESISTANCE OF LaO20.6SrO20.4CoO20.2FeO20.8O3-δ - SDC CARBONATE COMPOSITE CATHODE

Abstract: The effects of sintering temperature of an LSCF-samarium-doped

Cited by 18 publications

References 19 publications

EFFECTS OF NiO LOADING AND PRE-CALCINATION TEMPERATURE ON NiO-SDCC COMPOSITE ANODE POWDER FOR LOW-TEMPERATURE SOLID OXIDE FUEL CELLS

EFFECTS OF NiO LOADING AND PRE-CALCINATION TEMPERATURE ON NiO-SDCC COMPOSITE ANODE POWDER FOR LOW-TEMPERATURE SOLID OXIDE FUEL CELLS

Effects of sintering temperature on the structural and electrochemical properties of SrFe_0.5Ti_0.5O_3‐δ perovskite cathode

Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

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INFLUENCE OF SINTERING TEMPERATURE ON THE POLARIZATION RESISTANCE OF LaO20.6SrO20.4CoO20.2FeO20.8O3-δ - SDC CARBONATE COMPOSITE CATHODE

Abstract: The effects of sintering temperature of an LSCF-samarium-doped

Cited by 18 publications

References 19 publications

EFFECTS OF NiO LOADING AND PRE-CALCINATION TEMPERATURE ON NiO-SDCC COMPOSITE ANODE POWDER FOR LOW-TEMPERATURE SOLID OXIDE FUEL CELLS

EFFECTS OF NiO LOADING AND PRE-CALCINATION TEMPERATURE ON NiO-SDCC COMPOSITE ANODE POWDER FOR LOW-TEMPERATURE SOLID OXIDE FUEL CELLS

Effects of sintering temperature on the structural and electrochemical properties of SrFe0.5Ti0.5O3‐δ perovskite cathode

Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

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Effects of sintering temperature on the structural and electrochemical properties of SrFe_0.5Ti_0.5O_3‐δ perovskite cathode