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Publications
Publications (77)
Nanofibers have great promise as a highly active air electrode for reversible solid oxide cells (ReSOCs); however, one thorny issue is how to adhesively stick nanofibers to electrolyte with no damage to the original morphology. Herein, PrBa0.8Ca0.2Co2O5+δ (PBCC) nanofibers are applied as an air electrode by a facile direct assembly approach that le...
Nanostructured air electrodes play a crucial role in improving the electrocatalytic activity of oxygen reduction and evolution reactions in solid oxide cells (SOCs). Herein, we report the fabrication of a nanostructured BaCoO3-decorated cation-deficient PrBa0.8Ca0.2Co2O5+δ (PBCC) air electrode via a combined modification and direct assembly approac...
Metal–supported solid oxide fuel cells (SOFCs) have the merits of quick startup, low cost, and excellent robustness, however, there is a lack of understanding on the effect of thermally driven elemental diffusion. Herein, we investigate the role of elemental diffusion on the evolution of morphologies and electrochemical performance of Ni–Fe alloy s...
Degradation of cathodes caused by the gaseous Cr species from a Fe–Cr alloy interconnect is a key issue in the development of durable solid oxide fuel cells technologies. Herein, we explore the effect of infiltration of BaCO3 nanoparticles on the electrocatalytic performance and Cr–tolerance of La0.6Sr0.4Co0.2Fe0.8O3–δ (LSCF) cathodes. The BaCO3 in...
The development of nanostructured electrodes of solid oxide cells is largely hindered by the high temperature sintering process and limited in the loading and choices of catalytic phases. Here, a nanostructured multi-phase air electrode is fabricated via facile combination of Gd0.2Ce0.8O1.9 (GDC) decorated PrBa0.8Ca0.2Co2O5+δ (PBCC) and direct asse...
Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) is an excellent mixed ion/electron conducting cathode among solid oxide fuel cells; however, its electrochemical activity is limited by the sluggish oxygen surface exchange. The application range of the BSCF cathode can be widened by preparing BSCF in the form of an ultrafine powder; however, retaining the microstruc...
Solid oxide fuel cells (SOFCs) are the most efficient energy conversion technology to convert the chemical energy of fuels like hydrogen, natural gas, etc. to electricity. However, one of the limiting factors in the commercial viability of SOFCs technologies is the time-consuming and high-cost multiple cell fabrication processes. Here, we report th...
The electrocatalytic activity of oxygen reduction reaction on the cathodes of solid oxide fuel cells tends to be severely degraded due to the Cr poisoning effect ascribed to the use of a Fe-Cr alloy interconnect. Here, a hybrid catalyst coating consisting of BaCe0.8Gd0.2O3-δ and BaCO3 is developed on (La0.8Sr0.2)0.95MnO3+δ (LSM) cathodes to enhance...
Addition of doped ceria to double perovskite oxide such as PrBa0.8Ca0.2Co2O5+δ (PBCC) leads to remarkable performance enhancement of solid oxide fuel cells (SOFCs), however, the challenge is to facilely fabricate nano-structured PBCC cathodes with nanoscale doped ceria without agglomeration of the ultrafine phase during the conventional high temper...
An intimate Ni anode/electrolyte interface is vital for the performance and operating stability of solid oxide fuel cells, while the interface is greatly influenced under anodic polarization conditions. Here for the first time Ni anodes are directly assembled on 8 mol% Y2O3-stabilized ZrO2 (YSZ) electrolyte without high temperature sintering proces...
Reversible solid oxide cells (SOCs) are very efficient and clean for storage and regeneration of renewable electrical energy by switching between electrolysis and fuel cell modes. One of the most critical factors governing the efficiency and durability of SOCs technology is the stability of the interface between oxygen electrode and electrolyte, wh...
Symmetric cell configuration is commonly used for the study of reaction mechanism and kinetics of oxygen reduction reaction (ORR) and/or oxygen evolution reaction (OER) of solid oxide cells (SOCs) to avoid the issues associated with the possible inaccuracy and errors of the reference electrode in three-electrode cell configuration. The electrode im...
Bi2O3-based composite cathodes of solid oxide fuel cells are generally sintered at a low temperature of 750–800 °C, but the detailed information regarding the generation of electrode/electrolyte interface and its effect on the polarization performance are scarcely known. Here we assemble nanostructured 10–40 wt% Er0.4Bi1.6O3 decorated Sm0.95CoO3-δ...
Layered Ruddlesden-Popper La2NiO4+δ (LNO) is reported to possess excellent oxygen surface and bulk transport properties, but its application as the cathode of solid oxide fuel cells is restrained by the relatively poor electrocatalytic activity. Here, we report the incorporation of highly ion-conducting Er-stabilized Bi2O3 (ESB) into LNO and assemb...
The high reactivity between bismuth oxide and cobaltite oxygen electrodes is a bottleneck in developing active and reliable bismuth oxide-cobaltite composite oxygen electrodes for solid oxide cells (SOCs). Herein, a Sr-free Sm0.95Co0.95Pd0.05O3-δ (SmCPd) oxygen electrode decorated with nanoscale Er0.4Bi1.6O3 (ESB) is synthesized and prepared on bar...
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Sr doping is a common strategy to enhance the electrocatalytic activity of perovskite cathode materials of solid oxide fuel cells (SOFCs), but the tendency of Sr surface segregation, chemical incompatibility with yttria-stabilized zirconia (YSZ) and interaction with volatile contaminants such as chromium in SOFC stacks lead to a loss of long-term c...
Bismuth oxide exhibits extraordinary ionic conductivity and high surface exchange ability, but the low melting temperature and instability in reducing environment limits its wide application in intermediate temperature solid oxide fuel cells (IT-SOFCs). Herein, we incorporate yttria-stabilized bismuth oxide (YSB) as a promoter to enhance the electr...
In this paper, critical role of infiltrated nanoparticles (NPs) on the electrocatalytic activity of cathodes of solid oxide fuel cells (SOFCs) for O2 reduction reaction is studied on well-defined and microstructurally clean Pt electrodes using infiltrated La0.8Sr0.2CoO3 (LSC), La0.8Sr0.2Co0.5Mn0.5O3 (LSCM), and La0.8Sr0.2MnO3 (LSM) NPs. The promoti...
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Bismuth based oxide has excellent ionic conductivity and fast oxygen surface kinetics and shows promising potential as highly active electrode materials in solid oxide cells (SOCs) such as solid oxide fuel cells (SOFCs) and solid oxide electrolysis cells (SOECs). However, the low melting temperature and high activity of bismuth based oxides severel...
Direct assembly is a newly developed technique in which a co-baltite-based perovskite (CBP) cathode can be directly applied to a barrier-layer-free Y2O3-ZrO2 (YSZ) electrolyte with no high-temperature pre-sintering steps. Solid oxide fuel cells (SOFCs) based on directly assembled CBPs such as La0.6Sr0.4Co0.2Fe0.8O3�d show high performance initially...
Formation of an intimate electrode/electrolyte interface is essential for solid oxide fuel cells (SOFCs). In this study, a comparative investigation has been undertaken to study the interface formation between a La0.8Sr0.2MnO3 (LSM) cathode and Y2O3-ZrO2 (YSZ) electrolyte by high temperature sintering and by cathodic polarization using EIS, SEM, AF...
In this communication, cobaltite-based perovskite (CBP) cathodes are directly applied on the yttria-stabilized zirconia (YSZ) electrolyte via an in situ assembly process without the addition of a doped ceria interlayer and pre-sintering at high temperatures. The results demonstrate for the first time that a CBP electrode/YSZ electrolyte interface c...
A La0.8Sr0.2MnO3 (LSM)/La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) core–shell structured composite cathode of solid oxide fuel cells (SOFCs) has been fabricated by wet infiltration followed by a rapid sintering (RS) process. The RS is carried out by placing LSCF infiltrated LSM electrodes directly into a preheated furnace at 800 °C for 10 min and cooling down...
Inductive impedance loop at low frequencies on electrochemical impedance spectroscopy curves is a common phenomenon in electrochemical reactions such as fuel cells. Here, we study the occurrence of low frequency inductive impedance loops and their evolution for the oxygen reduction reaction on Gd0.2Ce0.8O1.9 infiltrated La0.8Sr0.2MnO3 (GDC-LSM), GD...
Ni-Y2O3 stabilized ZrO2 (Ni-YSZ) cermet is the most commonly used hydrogen electrode for hydrogen oxidation reaction (HOR) under solid oxide fuel cell (SOFC) mode and water reduction reaction (WRR) under solid oxide electrolysis cell (SOEC) mode. Here we studied the electrocatalytic activity of Ni-YSZ electrodes as a function of Ni content, water c...
The effect of boron species from borosilicate glass sealant on the electrocatalytic activity and microstructure of La0.8Sr0.2MnO3 (LSM) oxygen electrodes is studied for the first time under accelerated solid oxide electrolysis cell (SOEC) operation conditions at 800 °C. The presence of volatile boron species has remarkable detrimental effect on the...
High temperature solid oxide cells (SOCs) are attractive for storage and regeneration of renewable energy by operating reversibly in solid oxide electrolysis cell (SOEC) and solid oxide fuel cell (SOFC) modes. However, the stability of SOCs, particularly the deterioration of the performance of the oxygen electrodes under SOEC operation mode, is the...
Ni/Y2O3 stabilized ZrO2 (Ni/YSZ) cermet is a widely used hydrogen electrode for solid oxide fuel cells (SOECs), but detailed studies regarding the water splitting processes are scarce. Here we report the preliminary results on the variation of electrocatalytic activity of Ni/YSZ hydrogen electrodes as a function of operating temperature, water conc...
Performance degradation of cathodes due to the attack by chromium from Fe-Cr alloy interconnect is a major barrier to develop long-term durable solid oxide fuel cells (SOFCs). In this presentation, we report the development of a chromium tolerant BaO infiltrated La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode. After the test at 800°C for 100 h in the prese...
The effect of presence of Fe-Cr alloy metallic interconnect on the performance and stability of La0.8Sr0.2MnO3 (LSM) oxygen electrodes is studied for the first time under solid oxide electrolysis cell (SOEC) operation conditions at 800oC. The presence of Fe-Cr interconnect accelerates the degradation and delamination processes of the LSM oxygen ele...
BaO infiltrated La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode shows a remarkable tolerance and resistance towards chromium via the formation of BaCrO4 instead of SrCrO4 on the electrode surface, preventing the excess Sr deficiency at the A-site of LSCF perovskite and thus mitigating the Cr poisoning effect.
Effect of Gd0.2Ce0.8O1.9 (GDC) infiltration on the performance and stability of La0.8Sr0.2MnO3 (LSM) oxygen electrodes on Y2O3-stabilized ZrO2 (YSZ) electrolyte has been studied in detail under solid oxide electrolysis cell (SOEC) operating conditions at 800 degrees C. The incorporation of GDC nanoparticles significantly enhances the electrocatalyt...
Nano-structured Pd infiltrated and Pd0.95M0.05 (M = Mn, Co, Ce, and Gd) co-infiltrated Y2O3–ZrO2 (YSZ) electrodes are studied as the oxygen electrodes of solid oxide electrolysis cells (SOECs). The infiltrated Pd-YSZ electrodes show good electrocatalytic activity for the oxygen evolution reaction. For example, the electrode polarization resistance...
Boron is a key component in glass and glass–ceramic sealants for planar solid oxide fuel cells (SOFCs). In this paper, the chemical compatibility between boron and commonly used electrolyte and cathode materials of SOFCs such as Y0.16Zr0.84O2 (YSZ), Gd0.1Ce0.9O2 (GDC), La0.8Sr0.2MnO3 (LSM), La0.6Sr0.4Co0.2Fe0.8O3 (LSCF), SrCo0.2Fe0.8O3 (SCF), and (...
Oxygen electrode is a key component for solid oxide electrolysis cells (SOECs). Double perovksite oxide SmBaCo2O5-δ (SBCO) exhibits high electrical conductivity and fast oxygen transport properties, herein we proposed SBCO as a novel high efficient SOEC oxygen electrode based on Ce0.9Gd0.1O1.9 (GDC) electrolyte. Preliminary study showed that an are...
Effect of volatile boron species on the properties of La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) cathode materials has been studied in detail by using porous electrode coatings and dense bar samples. Prior to the characterization, the LSCF samples were heat-treated at 800oC in air in the presence of borosilicate glass for 7 and 30 days. Heat-treatment in the pr...
Effect of volatile boron species on the microstructure and composition of dense La0.8Sr0.2MnO3 (LSM) and La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) bar samples is studied in detail using secondary ion mass spectroscopy (SIMS) technique. Prior to the characterization, the bar samples were heat-treated at 800◦C in air in the presence of borosilicate glass for 7 a...
The relationship between the surface segregation, boron poisoning and surface exchange coefficients of La0.6Sr0.4Co0.2Fe0.8O3−δ, (LSCF) cathodes of solid oxide fuel cells (SOFCs) is studied on dense bar samples using SEM, SIMS and conductivity relaxation method. The SEM results clearly indicate that the segregation on the LSCF surface occurs after...
The effect of volatile boron species on the electrocatalytic activity, microstructure and phase stability of conventional La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) and nano-structured LSCF infiltrated Gd0.1Ce0.9O1.95 (LSCF-GDC) electrodes of solid oxide fuel cell (SOFC) is studied. The cathodes were heat-treated at 700–800°C for 7-30 days in air in the presenc...
The effect of volatile boron species on the microstructure and electrocatalytic activity of conventional (La,Sr)MnO3 (LSM) and nano-structured LSM infiltrated Y2O3-ZrO2 (LSM-YSZ) cathodes of solid oxide fuel cell (SOFC) is studied. The cathodes were heat-treated at 700–800°C in air for 7–30 days in the presence of borosilicate glass powder. Compare...
The impact of volatile boron species on the microstructure and performance of nano-structured (Gd,Ce)O2-infiltrated (La,Sr)MnO3 (GDC-LSM) cathodes of solid oxide fuel cells is studied for the first time. The results indicate that after the heat treatment of the cathodes at 800 °C in air for 30 days in the presence of borosilicate glass significant...
The electrochemical performance and stability of (La,Sr)MnO3–Y2O3–ZrO2 (LSM-YSZ) composite oxygen electrodes is studied in detail under solid oxide electrolysis cells (SOECs) operation conditions. The introduction of YSZ electrolyte phase to form an LSM-YSZ composite oxygen electrode substantially enhances the electrocatalytic activity for oxygen o...
Nano-structured (La,Sr)MnO3 infiltrated Y2O3–ZrO2 (LSM–YSZ) oxygen electrodes show excellent activity and performance stability under solid oxide electrolysis cells (SOECs) operation conditions. LSM–YSZ composite electrodes are prepared by infiltrating pre-sintered YSZ scaffold with LSM nitrate solution, followed by heat-treatment at 900 or 1100 °C...
Palladium-impregnated or infiltrated La0.8Sr0.2MnO3–Gd0.2Ce0.8O1.9 (LSM-GDC) composites are studied as the oxygen electrodes (anodes) for the hydrogen production in solid oxide electrolysis cells (SOECs). The incorporation of small amount of Pd nanoparticles leads to a substantial increase in the electrocatalytic activity and stability of the LSM-G...
Effect of characteristics of Sm0.2Ce0.8O1.9 (SDC) powder as a function of calcination temperature on the fabrication of dense and flat anode-supported SDC thin electrolyte cells has been studied. The results show that the calcination temperature has a significant effect on the particle size, degree of agglomeration, and sintering profiles of the SD...
Cu is incorporated by vacuum-assisted electroless plating into porous Ni/Sm0.2Ce0.8O1.9 (Ni/SDC) anodes as the active anodes for the oxidation reaction of hydrogen and methane of intermediate temperature solid oxide fuel cells (IT-SOFCs). The scanning electron microscopy (SEM) observation indicates the formation of a uniformly distributed nano-stru...
A nanostructured cathode is fabricated by incorporating a mixed ionic and electronic conducting (MIEC) perovskite, Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF), via ion impregnation into the most common, highly electronic conducting, and structurally stable La0.8Sr0.2MnO3-delta (LSM) porous cathode skeleton. The introduction of nanosized MIEC BSCF particles...
Gd0.2Ce0.8O1.9 (GDC)-impregnated La0.8Sr0.2MnO3 (LSM) electrodes are developed as the anodes for high temperature solid oxide electrolysis cells (SOECs). The effect of anodic polarization current passage on the electrode behavior and microstructure of the LSM- and GDC-impregnated LSM anodes is investigated under low and high currents at 800 degrees...
Anode substrate has a great effect on screen-printing fabrication of yttria-stabilized zirconia (YSZ) electrolyte film and cell performance. In this work, NiO+YSZ anode substrate was prepared by a conventional ceramic sintering method, on which dense YSZ electrolyte film was successfully fabricated by screen-printing method. Microstructure of the a...
Nickel oxide (NiO)/yttria-stabilized zirconia (YSZ) anode substrates were fabricated at four compaction pressures, 70, 200, 500 and 1000MPa, the particle size distributions of NiO and YSZ were investigated with the powders treated at different compaction pressures, and the effects of compaction pressure on the performance of anodes with and without...
A dense and uniform 3mol% yttria-stabilized tetragonal zirconia polycrystal (3YSZ) electrolyte film of 6μm in thickness was fabricated by slurry spin coating on a porous NiO/3YSZ anode substrate. Composite cathodes of La0.7Sr0.3MnO3 impregnated with Sm0.2Ce0.8O1.9 were fabricated on the 3YSZ films. A single cell produced in this way was tested at 7...
Before fabrication of dense yttria-stabilized zirconia films, several thin anode functional layers (AFL) were fabricated onto porous NiO/yttria-stabilized zirconia anode substrates using slurry spin coating. The effect of AFL thickness on gas impermeability and performance of a cell was investigated by studying the effect of AFL thickness on the op...
Ba0.5Sr0.5Co0.8Fe0.2O3−δ–xSm0.5Sr0.5CoO3−δ (BSCF–xSSC, x = 0–40 wt%) composite cathodes supported on Sm0.2Ce0.8O1.9 (SDC) electrolyte were studied for applications in IT-SOFCs. X-ray diffraction patterns showed obvious solid-state reactions between BSCF and SSC. However, the composite materials exhibited higher conductivity than that of pure BSCF,...
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Anode functional layers (AFLs) were fabricated using slurry spin coating method on anode substrates to improve the performance of cells based on samaria-doped ceria (SDC) films. The effects of the chemical compositions of AFL and AFL thickness on the performance of solid oxide fuel cell anodes were investigated by studying their effect on the ohmic...
In this investigation, a composite pore-former was developed to improve the properties of the NiO–YSZ (yttria-stabilized zirconia) anode substrate for YSZ membrane used in SOFC. By utilizing the composite pore-former in the anode substrate, the requirements of both suitable shrinkage that was compatible with that of electrolyte films and rational p...
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A novel in situ method – vacuum assisted electroless plating (VA–EP) is developed to modify the porous structure of various materials. The advantage of this method is it can form a metal network based on the already-given structure. We utilize this method to deposit silver (VA–EPA) in porous perovskite cathode Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) for an...
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NiO/yttria-stabilized zirconia (YSZ) anode substrates were fabricated at two compaction pressures of 200 and 1000 MPa, the particle size distributions of NiO and YSZ were investigated with powders treated under different conditions using a laser scattering technique (Mastersizer 2000, Malvern Instruments) and the effect of compaction pressure on th...
In order to increase the three phase boundary (TPB) length through lowering the NiO particles to submicro-size, NiO powder was synthesized by the precipitation method and the corresponding NiO-YSZ (8mol% yttria-stabilized zirconia) composite anodes were investigated in this paper. The crystallite size of the as-synthesized NiO particle was 20–30nm....
In an attempt to achieve desirable cell performance, the effects of La0.7Sr0.3MnO3 (LSM)-based cathodes on the anode-supported solid oxide fuel cells (SOFCs) were investigated in the present study. Three types of cathodes were fabricated on the anode-supported yttria-stabilized zirconia (YSZ) thin films to constitute several single cells, i.e., pur...
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An anode functional layer (AFL, ∼5μm) for improving the cell performance was fabricated by the slurry spin coating method on the porous surface of an anode substrate. The effects of the AFL on the anode/electrolyte interfacial morphology and the Sm0.2Ce0.8O1.9 (SDC) film deposition process were evaluated. And the electrochemical characteristics of...
In this paper, four fuel cells were prepared using anode supported YSZ electrolyte membranes with different thickness by slurry spin coating technique and tested at 700{degree sign} C to 800{degree sign}C. By fitting the AC impedance spectra of fuel cells, the ohmic and electrochemical polarization resistances were distinguished. It has been found...
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Sm0.2Ce0.8O1.9 (SDC)-impregnated La0.7Sr0.3MnO3 (LSM) composite cathodes were fabricated on anode-supported yttria-stabilized zirconia (YSZ) thin films. Electrochemical performances of the solid oxide fuel cells (SOFCs) were investigated in the present study. Four single cells, i.e., Cell-1, Cell-2, Cell-3 and Cell-4 were obtained after the fabrica...
A glass system based on SiO2–B2O3–Al2O3–BaCO3–PbO2–ZnO was prepared and a sort of compounding was optimized to determine the composition with best performance named AF8. The technical thermal expansion coefficient (t-TEC) is 10.58 × 10−6 K−1 between 323 and 773 K. The resistivity of AF8 is 1.95 × 104 Ω cm at 800 °C. The optimum sealing temperature...
This study presents the electrochemical performance of (Ba0.5Sr0.5)0.9Sm0.1Co0.8Fe0.2O3−δ (BSSCF) as a cathode material for intermediate temperature solid oxide fuel cells (IT-SOFC). AC-impedance analyses were carried on an electrolyte supported BSSCF/Sm0.2Ce0.8O1.9 (SDC)/Ag half-cell and a Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF)/SDC/Ag half-cell. In contr...
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Yttria-stabilized zirconia (YSZ) thin films were fabricated by slurry spin coating on NiO-YSZ anode substrates. The effect of processing factors, such as the baking temperature and spinning number was investigated and discussed. According to the thermogravimetric analysis, the organic additives could be removed by baking at 400 °C for 10 min. Under...
A slurry spin coating method was developed to fabricate gas-tight anode-supported YSZ films for solid oxide fuel cells (SOFCs). Several technique parameters for slurry spin coating, such as the slurry viscosity, spinning speed, number of coating cycles, film thickness and their effects on YSZ electrolyte film were investigated. SEM results, open-ci...
A dense single-layer YSZ film has been successfully fabricated by a spin smoothing method. Followed by a simplified slurry coating, an additional spin smoothing process was conducted to obtain a thinner and smoother film. By employment of high-viscosity slurry including high YSZ content, the film has a suitable thickness by a single coating cycle....
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Samaria-doped ceria (Sm0.2Ce0.8O1.9, SDC) membranes for anode-supported solid oxide fuel cells were fabricated by a slurry spin coating method. Comparative studies were carried out on the effect of the agglomerate property of SDC powders on the fabrication of the membranes. The results showed that the agglomerate property of the SDC powders had a s...
Dense yttria-stabilized zirconia (YSZ) electrolyte films were successfully fabricated onto anode substrates using a modified dry pressing process. The film thickness was uniform, and could be readily controlled by the mass of the nanocrystalline YSZ powders. The electrolyte films adhered well to the anode substrates by controlling the anode composi...
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A simple and effective slurry spin coating approach was developed for fabricating Sm0.2Ce0.8O1.9 (SDC) films on porous NiO-SDC anode substrates. A dense SDC film with a thickness of ∼15μm was obtained after sintering at 1400°C for 4h. With the same approach, the novel Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF)-SDC composite cathode layer was fabricated on the...
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Yttria-stabilized zirconia (YSZ) thin films were successfully fabricated on porous NiO–YSZ anode substrates via a slurry spin coating method. With ∼34-μm-thick Sm0.2Ce0.8O1.9 (SDC)-impregnated La0.7Sr0.3MnO3 (LSM) cathodes, a single cell based on a ∼9-μm-thick YSZ film exhibited a good performance at intermediate-to-low temperature. The cell produc...
Projects
Projects (2)
This project highlights the research conducted using the Lyra FIB-SEM at Curtin University.
The Lyra is a high resolution Ga+ FIB (2.5 nm resolution) and includes a ToF-SIMS detector as well as Oxford AZtec EDS and EBSD detectors. This combination enables the FIB-SEM to be used for high precision site-selective sample preparation (for atom probe, TEM or TKD) and advanced microanalysis in 2D and 3D.
The Lyra is part of the Advanced Resource Characterisation Facility (ARCF) and is located within the John de Laeter Centre.
Direct assembly is a newly developed technique in which cathode is directly applied to Y2O3-ZrO2 (YSZ) electrolyte without a doped ceria interlayer and without pre-sintering at high temperatures. The aim of this project is to investigate how the electrode/electrolyte interface is formed under the influence of electrochemical polarization, as well as to search a suitable cobaltite based perovskite (CBP) cathode for long term durable solid oxide cells.