Development of solid oxide fuel cells (SOFCs) by tape-casting and single-step co-firing of monolithic laminates

Myung, Jae‐ha; Ko, Hyun Jun; Im, Chang Hyeok; Moon, Jooho; Hyun, Seungjoon

doi:10.1016/j.ijhydene.2013.11.122

Cited by 19 publications

(12 citation statements)

References 31 publications

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“…In addition, the cathode in all the cells possesses coarser microstructure than the anode as a result of over‐sintering. Nonetheless, electrolyte porosity might be removed either by adding some sintering aids in order to reduce sintering temperature of electrolyte or reducing electrolyte particle size to improve its sinterability though these could affect the performance of the cell . Furthermore, the XRD result of the final planar cell with no curvature (specimen E) also shows that there is no third phase formation (see Figure ).…”

Section: Resultsmentioning

confidence: 99%

“…The rationale for a two‐step sintering is that the materials for anode, electrolyte, and cathode require different sintering temperatures to achieve the expected microstructures. Though a two‐step sintering process decreases possible reactions/interactions between electrolyte and cathode, there are several reasons why single‐step co‐sintering of SC‐SOFCs are desirable, mainly pertaining to simplifying the process along with decreasing the processing time and input energy . These benefits of single‐step co‐sintering of SC‐SOFCs reduce further the cost of SC‐SOFCs fabrication and thereby improve commercial viability if employed in commercial scale.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, a single‐step co‐sintering process is applied to fabricate anode‐supported planar SC‐SOFCs. Sintering the anode, cathode, and electrolyte in one step is difficult because each component has different sintering behaviors and microstructures . Therefore, each component of the cell must match in shrinkage behavior to avoid or minimize strain mismatches.…”

Section: Introductionmentioning

confidence: 99%

“…Sintering the anode, cathode, and electrolyte in one step is difficult because each component has different sintering behaviors and microstructures. 12,[14][15][16] Therefore, each component of the cell must match in shrinkage behavior to avoid or minimize strain mismatches. Otherwise, it is highly possible to form crack or crack-like defects in the cell as a result of the mismatch stress.…”

Section: Introductionmentioning

confidence: 99%

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Single‐step fabrication of an anode supported planar single‐chamber solid oxide fuel cell

Sayan

Venkatesan

Guk

et al. 2018

Int J Applied Ceramic Tech

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We present single‐step‐co‐sintering manufacture of a planar single‐chamber solid oxide fuel cell (SC‐SOFC) with porous multilayer structures consisting of NiO/CGO, CGO and CGO‐LSCF as anode, electrolyte, and cathode, respectively. Their green tapes were casted with 20 μm thickness and stacked into layers of anode, electrolyte, and cathode (10:2:2), then hot‐pressed at 2 MPa and 60°C for 5 minutes (deemed optimal). Subsequently, hot laminated layers were cut into 40 × 40 mm cells and co‐sintered up to 1200°C via different sintering profiles. Shrinkage behavior and curvature developments of cells were characterized, determining the best sintering profile. Hence, anode‐supported SC‐SOFCs were fabricated via a single‐step co‐sintering process, albeit with curvature formation at edges. Subsequently, anode thickness was increased to 800 μm and electrolyte reduced to 20 μm to obtain SOFCs with drastically reduced curvature with the help of a porous alumina cover plate.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Single‐step fabrication of an anode supported planar single‐chamber solid oxide fuel cell

Sayan

Venkatesan

Guk

et al. 2018

Int J Applied Ceramic Tech

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“…Digital manufacturing has been recently introduced to fabricate ceramic fuel cells [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ]. Digital manufacturing offers various advantages over conventional printing techniques such as screen printing [ 38 , 39 ] and tape casting [ 40 , 41 ]. For instance, the production cost of fuel cells is expected to be decreased by preventing material loss and by reducing the number of fabrication steps involved in device fabrication.…”

Section: Introductionmentioning

confidence: 99%

Systematic Analysis on the Effect of Sintering Temperature for Optimized Performance of Li0.15Ni0.45Zn0.4O2-Gd0.2Ce0.8O2-Li2CO3-Na2CO3-K2CO3 Based 3D Printed Single-Layer Ceramic Fuel Cell

et al. 2021

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Single-layer ceramic fuel cells consisting of Li0.15Ni0.45Zn0.4O2, Gd0.2Ce0.8O2 and a eutectic mixture of Li2CO3, Na2CO3 and K2CO3, were fabricated through extrusion-based 3D printing. The sintering temperature of the printed cells was varied from 700 °C to 1000 °C to identify the optimal thermal treatment to maximize the cell performance. It was found that the 3D printed single-layer cell sintered at 900 °C produced the highest power density (230 mW/cm2) at 550 °C, which is quite close to the performance (240 mW/cm2) of the single-layer cell fabricated through a conventional pressing method. The best printed cell still had high ohmic (0.46 Ω·cm2) and polarization losses (0.32 Ω·cm2) based on EIS measurements conducted in an open-circuit condition. The XRD spectra showed the characteristic peaks of the crystalline structures in the composite material. HR-TEM, SEM and EDS measurements revealed the morphological information of the composite materials and the distribution of the elements, respectively. The BET surface area of the single-layer cells was found to decrease from 2.93 m2/g to 0.18 m2/g as the sintering temperature increased from 700 °C to 1000 °C. The printed cell sintered at 900 °C had a BET surface area of 0.34 m2/g. The fabrication of single-layer ceramic cells through up-scalable 3D technology could facilitate the scaling up and commercialization of this promising fuel cell technology.

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Design of Nano‐Composite Structured Electrode for High‐Performance and Stability of Metal‐Supported Solid Oxide Cells

Park,

Kang,

Kim

et al. 2023

Adv Materials Technologies

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Solid oxide cells are reversible energy‐conversion devices for electric power generation and fuel production with high efficiency. However, robust cell structures and multifunctional electrodes must be provided to achieve high cell performance under multifuel conditions. Herein, a precisely controlled metal‐supported structure and dual‐nanocomposite catalyst is presented. The thermal and shrinkage behaviors of the metal supports play a crucial role in determining the interconnectivity between cell components. Compared to micron‐sized cermets, the dual‐nanocomposite electrode with tremendous three‐phase boundaries drastically improves cell performance by increasing the electrochemical activity for diverse fuel reactions. The developed cells exhibited outstanding maximum power densities of 1.1 and 1.0 W cm−2 in fuel‐cell mode using H2 and CO fuels, and current densities of −0.61 and −0.5 A cm−2 in electrolysis‐cell mode (1.3 V) under H2O/H2 and CO2/CO conditions at 650 °C. These findings suggest fundamental techniques for improving the structural stability and activity of cell components to operate in diverse fuel systems.

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Development of solid oxide fuel cells (SOFCs) by tape-casting and single-step co-firing of monolithic laminates

Cited by 19 publications

References 31 publications

Single‐step fabrication of an anode supported planar single‐chamber solid oxide fuel cell

Single‐step fabrication of an anode supported planar single‐chamber solid oxide fuel cell

Systematic Analysis on the Effect of Sintering Temperature for Optimized Performance of Li0.15Ni0.45Zn0.4O2-Gd0.2Ce0.8O2-Li2CO3-Na2CO3-K2CO3 Based 3D Printed Single-Layer Ceramic Fuel Cell

Design of Nano‐Composite Structured Electrode for High‐Performance and Stability of Metal‐Supported Solid Oxide Cells

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