Fabrication of solid oxide fuel cells (SOFCs) by solvent-controlled co-tape casting technique

Lee, Sang-Hun; Lee, Kun Ho; Jang, Young-hoon; Bae, Joongmyeon

doi:10.1016/j.ijhydene.2016.07.066

Cited by 40 publications

(25 citation statements)

References 44 publications

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“…Before continuing, it is important to describe how these fuel side electrode cermets are fabricated. The most common practice is to co-sinter a thin electrolyte (YSZ or BZCY) onto a composite support composed of NiO and the electrolyte material [32,[407][408][409][410], YSZ on YSZ/NiO for SOFCs, or BZCY on BZCY/NiO in the case of PCFCs. The co-sintering takes place in oxidizing atmospheres at temperatures above 1300 • C, followed by a reduction step to reduce NiO to Ni.…”

Section: Expansion Of Fuel Side Electrodesmentioning

confidence: 99%

Thermal and Chemical Expansion in Proton Ceramic Electrolytes and Compatible Electrodes

2018

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This review paper focuses on the phenomenon of thermochemical expansion of two specific categories of conducting ceramics: Proton Conducting Ceramics (PCC) and Mixed Ionic-Electronic Conductors (MIEC). The theory of thermal expansion of ceramics is underlined from microscopic to macroscopic points of view while the chemical expansion is explained based on crystallography and defect chemistry. Modelling methods are used to predict the thermochemical expansion of PCCs and MIECs with two examples: hydration of barium zirconate (BaZr1−xYxO3−δ) and oxidation/reduction of La1−xSrxCo0.2Fe0.8O3−δ. While it is unusual for a review paper, we conducted experiments to evaluate the influence of the heating rate in determining expansion coefficients experimentally. This was motivated by the discrepancy of some values in literature. The conclusions are that the heating rate has little to no effect on the obtained values. Models for the expansion coefficients of a composite material are presented and include the effect of porosity. A set of data comprising thermal and chemical expansion coefficients has been gathered from the literature and presented here divided into two groups: protonic electrolytes and mixed ionic-electronic conductors. Finally, the methods of mitigation of the thermal mismatch problem are discussed.

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Section: Expansion Of Fuel Side Electrodesmentioning

confidence: 99%

Thermal and Chemical Expansion in Proton Ceramic Electrolytes and Compatible Electrodes

2018

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“…The benefits of this method for commercialization of SOFC application is the capability to produce bulk production with cost-effective development . 98,99 Typically, this method is appropriate for anode and bi-layer electrolyte fabrication. The fabrication component begins with the preparation of ceramic and polymer mixture with the dispersing agents to prepare the slurry development usually using the ball-milled.…”

Section: Tape Casting Methodsmentioning

confidence: 99%

A review of solid oxide fuel cell component fabrication methods toward lowering temperature

et al. 2019

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The solid oxide fuel cells (SOFCs) emerge as an alternative power generation system for high-scale stationary application and power plant station. The SOFC consumption leads to the high-efficiency energy production that forms variety of fuels up to 60% energy conversion; the operation system does not involve the burning process and minimizes the air pollution. Also, the aptitude to provide the cogenerative energy production from the heat waste during the operation process serve SOFC as an attractive green technology and environmentally friendly. However, the SOFC consumption remains limited for transportation and portable applications because the simple design of power source compartment is still the major hurdle in each SOFC component development and commercialization. Therefore, the appropriate fabrication method of each SOFC component is important to achieve the reliability of the SOFC application for the small-scale power generation design. In this paper, an overview of the design types and SOFC components and properties following electrode, electrolyte, interconnect and sealant are discussed and summarized. As the thirdgeneration fuel cells, which entice the commercialization stage, this paper concentrates more on the fabrication method of each SOFC components that were explored including the working principle, advantage, disadvantage and several previous works on each fabrication method, which are described to finding the appropriate fabrication method toward lowering the operating temperature and develop the simple design of SOFC power sources system for the transportation and portable application. The targeted market power production of SOFC system for transportation application is about 5 kW and 250 W for portable application.

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“…After sintering, green sheets support passive components and conductors. Hence, the characteristics of the green sheet affect its practical application . A green sheet is a thick composite film composed of inorganic powders and organic additives, such as binders, plasticizers, and dispersants.…”

Section: Characteristics Required In Green Sheetsmentioning

confidence: 99%

“…Hence, the characteristics of the green sheet affect its practical application. 15,16 A green sheet is a thick composite film composed of inorganic powders and organic additives, such as binders, plasticizers, and dispersants. To ensure uniform shrinkage during sintering, as well as uniform density and physical properties, inorganic powders need to be evenly dispersed in the solvent system such that the slurry is isotropic.…”

Section: In Green Sheetsmentioning

confidence: 99%

The tape casting process for manufacturing low‐temperature co‐fired ceramic green sheets: A review

2018

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For low‐temperature co‐fired ceramic technology, the fabrication of high‐performance green sheet is a critical step because of its effect on subsequent operations such as punching, printing, laminating, and firing. Here, we present an overview of the tape casting process for manufacturing high‐performance low‐temperature co‐fired ceramic green sheets. Previous research is reviewed, and the primary materials for preparing the casting slurry, such as powders, solvents, dispersants, binders, and plasticizers, are systematically described. Their functions, application methods, and action mechanisms are described. Suggestions are made for future research into the tape casting process based on recent results.

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Fabrication of solid oxide fuel cells (SOFCs) by solvent-controlled co-tape casting technique

Cited by 40 publications

References 44 publications

Thermal and Chemical Expansion in Proton Ceramic Electrolytes and Compatible Electrodes

Thermal and Chemical Expansion in Proton Ceramic Electrolytes and Compatible Electrodes

A review of solid oxide fuel cell component fabrication methods toward lowering temperature

The tape casting process for manufacturing low‐temperature co‐fired ceramic green sheets: A review

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