Fabrication and evaluation of a novel wavy Single Chamber Solid Oxide Fuel Cell via in-situ monitoring of curvature evolution

Choi, Indae; Kim, Jung-Sik; Venkatesan, V.; Ranaweera, Manoj Prasanna

doi:10.1016/j.apenergy.2017.03.090

Cited by 8 publications

(4 citation statements)

References 49 publications

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“…Figure b, c shows the I – V (current–voltage) and I – P (current–power) of fuel cell devices consisting of the bulk planar and thin planar p–n junction(s) bilayers, respectively, measured at 500–600 °C. It should be noted that in the fuel cell, H 2 (Fuel) was applied to the planar p–LiCoO 2 side, and ambient air as the oxidant was applied to the planar n-SnO 2 side. − At the interface between the p-LiCoO 2 and n-SnO 2 , the formed BIEF can effectively prevent the electrons from CB of SnO 2 to CB of LiCoO 2 . Here, the BIEF promotes the lopsided charge distribution around the junction to support the electrochemical reactions.…”

Section: Resultsmentioning

confidence: 99%

Built-in Electric Field for Efficient Charge Separation and Ionic Transport in LiCoO₂/SnO₂ Semiconductor Junction Fuel Cells

Ganesh

Fan

Wang

et al. 2022

ACS Appl. Energy Mater.

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Built-in electric field (BIEF)-induced charge transfer in planar and bulk junctions has significantly improved electrochemical performance in current and advanced energy storage devices such as lithium, sodium, and aluminum batteries. In this study, fuel cells with different junctions based on semiconductor membranes were designed in thin-film planar, bulk planar, and bulk heterojunction (BHJ) configurations to investigate the BIEF effects on their electrochemical performance. These semiconductor membrane fuel cells were constructed with p-type LiCoO2 and n-type SnO2 sandwiched between Ni0.8Co0.15Al0.05LiO2 (NCAL) electrode semiconductors. At 600 °C, the fuel cells with bulk heterojunction (BHJ), bulk planar p–n junction, and thin-film planar p–n junction deliver remarkable peak power densities of 0.82, 0.61, and 0.28 W/cm2 in H2/air operation, respectively. The band structures were determined and the charge transport properties and device operation were investigated. Our results show that the semiconductor membrane-based devices are a good alternative to replace the conventional electrolyte membrane fuel cells for the next generation of fuel-to-electricity conversion technology.

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Section: Resultsmentioning

confidence: 99%

Built-in Electric Field for Efficient Charge Separation and Ionic Transport in LiCoO₂/SnO₂ Semiconductor Junction Fuel Cells

Ganesh

Fan

Wang

et al. 2022

ACS Appl. Energy Mater.

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“…Mostly, electrolytes and anodes are used as supporting components in SC-SOFC too [ 7 , 60 , 103 , 104 , 105 ]. In the single work [ 106 ] devoted to cathode-supported SC-SOFC, the peak specific power of only 9 mW∙cm −2 was obtained, whereas in AS SC-SOFC, power values of the order of 200–400 mW∙cm −2 are achieved [ 104 , 105 ]. A recent numerical simulation [ 107 ] has shown that the characteristics of a cathode-supported SC-SOFC should be less than those of an anode-supported SC-SOFC due to the difficulty of oxygen passing through the cathode layer to the reaction zone.…”

Section: Classification Of Sofcmentioning

confidence: 99%

Classification of Solid Oxide Fuel Cells

et al. 2022

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Solid oxide fuel cells (SOFC) are promising, environmentally friendly energy sources. Many works are devoted to the study of materials, individual aspects of SOFC operation, and the development of devices based on them. However, there is no work covering the entire spectrum of SOFC concepts and designs. In the present review, an attempt is made to collect and structure all types of SOFC that exist today. Structural features of each type of SOFC have been described, and their advantages and disadvantages have been identified. A comparison of the designs showed that among the well-studied dual-chamber SOFC with oxygen-ion conducting electrolyte, the anode-supported design is the most suitable for operation at temperatures below 800 °C. Other SOFC types that are promising for low-temperature operation are SOFC with proton-conducting electrolyte and electrolyte-free fuel cells. However, these recently developed technologies are still far from commercialization and require further research and development.

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“…Furthermore, thermal expansion coefficient (TEC) mismatch between each layer becomes a dominant factor when materials have higher viscosity that is, during cooling process . Therefore, in order to achieve the single‐step co‐sintering of an anode supported SC‐SOFC, the sintering temperature was decreased to obtain a preferable cathode microstructure, while still densifying the electrolyte . In addition, the sintering temperature of the cathode is generally less than that of the anode and electrolyte .…”

Section: Introductionmentioning

confidence: 99%

“…6 Therefore, in order to achieve the singlestep co-sintering of an anode supported SC-SOFC, the sintering temperature was decreased to obtain a preferable cathode microstructure, while still densifying the electrolyte. 11,17,18 In addition, the sintering temperature of the cathode is generally less than that of the anode and electrolyte. 11,19,20 Therefore, the cathode particle size was chosen to be greater than that of the anode and cathode, so as to retard the sintering kinetics of the cathode and thereby suppressing quicker densification, as well as to balance the final density of materials during the co-sintering process.…”

Section: Introductionmentioning

confidence: 99%

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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Fabrication and evaluation of a novel wavy Single Chamber Solid Oxide Fuel Cell via in-situ monitoring of curvature evolution

Cited by 8 publications

References 49 publications

Built-in Electric Field for Efficient Charge Separation and Ionic Transport in LiCoO₂/SnO₂ Semiconductor Junction Fuel Cells

Built-in Electric Field for Efficient Charge Separation and Ionic Transport in LiCoO₂/SnO₂ Semiconductor Junction Fuel Cells

Classification of Solid Oxide Fuel Cells

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

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Fabrication and evaluation of a novel wavy Single Chamber Solid Oxide Fuel Cell via in-situ monitoring of curvature evolution

Cited by 8 publications

References 49 publications

Built-in Electric Field for Efficient Charge Separation and Ionic Transport in LiCoO2/SnO2 Semiconductor Junction Fuel Cells

Built-in Electric Field for Efficient Charge Separation and Ionic Transport in LiCoO2/SnO2 Semiconductor Junction Fuel Cells

Classification of Solid Oxide Fuel Cells

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

Contact Info

Product

Resources

About

Built-in Electric Field for Efficient Charge Separation and Ionic Transport in LiCoO₂/SnO₂ Semiconductor Junction Fuel Cells

Built-in Electric Field for Efficient Charge Separation and Ionic Transport in LiCoO₂/SnO₂ Semiconductor Junction Fuel Cells