The Development of Current Collection in Micro-Tubular Solid Oxide Fuel Cells—A Review

Hodjati-Pugh, Oujen; Dhir, Aman; Steinberger‐Wilckens, Robert

doi:10.3390/app11031077

Cited by 31 publications

(15 citation statements)

References 110 publications

(137 reference statements)

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“…The main configurations of the thin film SOFCs are the cells with (i) a supporting electrolyte, (ii) a supporting electrode (an anode or a cathode), and (iii) an external support [39], as schematically shown in Figure 2. The SOFC with a freestanding electrolyte film, which is schematically presented in Figure 3, can be considered as a distinct type of thin film SOFCs [39,40]. In the case of the electrolytesupported SOFC, a dense ceramic electrolyte provides mechanical support of the cell.…”

Section: Operation Mechanism Configurations and Geometries Of Thin Fi...mentioning

confidence: 99%

Solid Oxide Fuel Cells with a Thin Film Electrolyte: A Review on Manufacturing Technologies and Electrochemical Characteristicses

Dunyushkina

2022

EM&T

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Solid oxide fuel cells (SOFCs) are electrochemical systems converting the energy released during fuel oxidation into electrical energy. SOFCs are considered as a promising clean energy technology due to the high efficiency of fuel-to-power conversion and environmental friendliness. The potential applications of SOFCs extend from stationary power generation units for industrial and household facilities to auxiliary power units in vehicles and portable power sources. One of the main elements of SOFCs is a solid oxide electrolyte possessing ionic conductivity at high temperatures (above 700 °C). The main challenge in the SOFC commercialization is related to their high operating temperature, which entails materials degradation, short life-time, long start-up and shut-down times, and high cost. One of the most effective ways to reduce the SOFC operating temperature is to minimize the electrolyte thickness. In this regard, fabrication of SOFCs with a thin film electrolyte has been attracting high research activity over the past few decades. Different fabrication techniques were reported to be applicable for manufacturing thin film SOFCs, and the fuel cell performance was found to be highly dependent on the appropriate selection of materials and processing technologies. The present review is focused on state-of-the-art fabrication technologies of the thin film SOFCs. A brief survey of configurations and geometries of the thin film SOFCs and methods of deposition of solid-oxide films is given. Special attention is focused on the electrical generation performance of the thin film SOFCs.

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Section: Operation Mechanism Configurations and Geometries Of Thin Fi...mentioning

confidence: 99%

Solid Oxide Fuel Cells with a Thin Film Electrolyte: A Review on Manufacturing Technologies and Electrochemical Characteristicses

Dunyushkina

2022

EM&T

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“…[108] However, tubular cells often suffer from the long current path, increasing the ohmic loss and essentially negatively influencing the power density. [132,138,140,141] The geometric design of SOFCs requires a cell assembly as a support to carry the remaining cell layers, which can be roughly classified into two types: electrolyte support and electrode support. The electrolyte support design is to use the electrolyte as the support structure, with the cathode and anode on both sides of the electrolyte.…”

Section: Effects Of Solvent Non-solvent and Polymer Additivesmentioning

confidence: 99%

“…[ 108 ] However, tubular cells often suffer from the long current path, increasing the ohmic loss and essentially negatively influencing the power density. [ 132,138,140,141 ]…”

Section: Phase Inversion and Its Applications For Generating The Hier...mentioning

confidence: 99%

Manipulating and Optimizing the Hierarchically Porous Electrode Structures for Rapid Mass Transport in Solid Oxide Cells

Hou

Pan

et al. 2022

Adv Funct Materials

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Over the past decades, considerable efforts have been made to develop hierarchically porous electrodes for the high surface area, the fast velocity of fuels/products to/away from the reaction site, and the high loading of thermal-and/or electrochemical-catalysts. Manipulation of the hierarchical structure is one of the key steps for high performance in applications of efficient energy storage and conversion such as solid oxide cells. This review starts with a brief introduction to the basic concept of mass transport and how mass transport may affect performance. Then, the latest developments in enhancing the performance of cells through modification or optimization of the hierarchically porous electrode structures, including altering the geometry or morphology and increasing the triple-phase boundaries length of electrodes are summarized. Subsequently, the unique characteristics of microstructures that are critical to enhancing electrode performance and provide important insights into the mechanisms of performance (activity and durability) enhancement, aiming at achieving the rational design of better electrode architecture are highlighted. Finally, the remaining challenges for the knowledge-based design of highly efficient electrodes for electrochemical devices, together with possible directions and future perspectives for the development of highly efficient electrodes through optimization of microstructure are discussed.

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“…They are characterised by simplicity and lower manufacturing costs compared to tubular cells. However, their tubular geometry allows to solve problems with start-up time, thermal cracks and sealing [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ]. These properties make them more desirable, and the possibility of their manufacturing and operating at low temperatures should allow for a much wider scope of their application.…”

Section: Introductionmentioning

confidence: 99%

“…Considerably less information is available on the preparation of this electrolyte for tubular cells. Few papers [ 1 , 2 , 4 , 5 , 6 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 ] demonstrate results of investigation on manufacturing of ScSZ electrolytes for tubular SOFC via “wet chemistry” methods, mainly dip-coating, where the final stage of this process is their sintering at temperatures of 1400–1500 °C. However, there is no information on attempts to obtain electrolytes on tubular substrates using CVD or MOCVD methods.…”

Section: Introductionmentioning

confidence: 99%

Chemical Vapour Deposition of Scandia-Stabilised Zirconia Layers on Tubular Substrates at Low Temperatures

Sawka

2022

Materials

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The paper presents results of investigation on synthesis of non-porous ZrO2-Sc2O2 layers on tubular substrates by MOCVD (metalorganic chemical vapor deposition) method using Sc(tmhd)3 (Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)scandium(III), 99%) and Zr(tmhd)4 (Tetrakis(2,2,6,6-tetramethyl-3,5-heptanedionato)zirconium)(IV), 99.9+%) as basic reactants. The molar content of Sc(tmhd)3 in the gas mixture was as follows: 14, 28%. The synthesis temperature was in the range of 600–700 °C. The value of extended Grx/Rex2 expression (Gr-Grashof number, Re-Reynolds number and x-the distance from the gas inflow point) was less than 0.01. The layers were deposited under reduced pressure or close to atmospheric pressure. The layers obtained were tested using scanning electron microscope (SEM) with an energy dispersive X-ray spectroscope (EDS) microanalyzer, X-ray diffractometer and UV-Vis spectrophotometer. The layers deposited were non-porous, amorphous or nanocrystalline with controlled chemical composition. The layers synthesized at 700 °C were nanocrystalline. ZrO2-Sc2O3 layers with 14 mol.% Sc2O3 content had a rhombohedral structure.

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The Development of Current Collection in Micro-Tubular Solid Oxide Fuel Cells—A Review

Cited by 31 publications

References 110 publications

Solid Oxide Fuel Cells with a Thin Film Electrolyte: A Review on Manufacturing Technologies and Electrochemical Characteristicses

Solid Oxide Fuel Cells with a Thin Film Electrolyte: A Review on Manufacturing Technologies and Electrochemical Characteristicses

Manipulating and Optimizing the Hierarchically Porous Electrode Structures for Rapid Mass Transport in Solid Oxide Cells

Chemical Vapour Deposition of Scandia-Stabilised Zirconia Layers on Tubular Substrates at Low Temperatures

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