Enhanced electrochemical performance of metal-supported solid oxide fuel cells via an inner coating of Gd0.1Ce0.9O2-δ nanosol in the porous NiFe-metal support

Choi, Hyun Jong; Kim, Tae Woo; Na, Young Heum; Seo, Doo Won; Woo, Sang Kuk; Huh, Joo Youl; Kim, Sun Dong

doi:10.1016/j.jpowsour.2018.10.044

Cited by 17 publications

(9 citation statements)

References 22 publications

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“…130 The development of auxiliary power unit (APU) by Delphi (US) and the ship propulsion by Hitachi (Japan), which targeted market power production for transportation application is about 5 kW. 130 The development of auxiliary power unit (APU) by Delphi (US) and the ship propulsion by Hitachi (Japan), which targeted market power production for transportation application is about 5 kW.…”

Section: Conductivity Properties and Performance Of Sofcsmentioning

confidence: 99%

“…The application of SOFCs system as an alternative power supply system for the transportation and portable device consumption leads to more advantages such as the green technology, which minimizes the pollution emission and making the environment friendly. 130 The development of auxiliary power unit (APU) by Delphi (US) and the ship propulsion by Hitachi (Japan), which targeted market power production for transportation application is about 5 kW. Meanwhile, the targeted market of portable application is around the 250 W and below.…”

Section: Conductivity Properties and Performance Of Sofcsmentioning

confidence: 99%

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A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

et al. 2019

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Solid Oxide Fuel Cells (SOFCs) are an electrochemical energy converter that receives the world's attention as a power generation system of the future owing to its flexibility to consume various types of fuels, low emission of greenhouses gases, and having high efficiency reaching over 70%. A conventional SOFCs operates at high temperature, typically ranges between 800 to 1000°C. SOFCs use yttria-stabilized zirconia (YSZ) as the electrolyte, which exhibits excellent oxide ion conductivity in this temperature range. However, this temperature range poses an issue to SOFCs durability, as it leads to the degradation of the cell components. In addition, SOFCs application is limited and difficult to implement for the transportation sector and portable appliance. A viable solution is to lower the SOFCs operating temperature to intermediate (600 to 800°C ) or low (<600°C) operating temperature. The benefit of this way, cell durability will improve, as well as other advantages such as facilitates handling, assembling, dismantling, cost reduction, and expanded the SOFCs application. Nonetheless, the key challenge for the issue is finding suitable electrolyte, as YSZ have lower ionic conductivity at low and intermediate temperature range. The aim of this paper is to review the status and challenges in the attempts made to modify YSZ electrolyte within the past decade. The resulting ionic conductivity, microstructure, and densification, mechanical and thermal properties of these 'new' electrolytes critically reviewed. The targeted conductivity of modification of YSZ electrolyte must be exceeded >0.1 S cm -1 to enable high performance of SOFCs power generation systems to be realized for transportation and portable applications. Based on our knowledge, this paper is the first review which focused on the recent status and challenges of YSZ electrolyte towards lowering the operating temperature.

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Section: Conductivity Properties and Performance Of Sofcsmentioning

confidence: 99%

Section: Conductivity Properties and Performance Of Sofcsmentioning

confidence: 99%

A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

et al. 2019

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“…136 The targeted market power production for transportation application is about 5 kW such as the development of auxiliary power unit (APU) by Delphi (US), and the ship propulsion by Hitachi (Japan). 136 The targeted market power production for transportation application is about 5 kW such as the development of auxiliary power unit (APU) by Delphi (US), and the ship propulsion by Hitachi (Japan).…”

Section: Challenges and Future Perspectivementioning

confidence: 99%

“…The consumption of SOFC application as an alternative power generator system for the transportation and portable application gives many benefits toward green technology and environmentally friendly . 136 The targeted market power production for transportation application is about 5 kW such as the development of auxiliary power unit (APU) by Delphi (US), and the ship propulsion by Hitachi (Japan). For the portable application, the targeted market is about below than 250 W such as Acumentrics (US) manufactured the portable power generation and Protonex Tech.…”

Section: Challenges and Future Perspectivementioning

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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“…One of the most promising approaches to the reduction of ohmic resistance is the application of electrolyte thin films having a thickness of about 10-30 µm [6][7][8]. Due to technological issues involved in the manufacture of such thin films, their formation should be carried out on a porous supporting substrate (cathode [9][10][11], anode [12][13][14], metal interconnector [15][16][17]) in order to ensure the mechanical strength of the cell. For this reason, questions arise concerning the production technology of supporting substrates.…”

Section: Introductionmentioning

confidence: 99%

Application of Promising Electrode Materials in Contact with a Thin-Layer ZrO2-Based Supporting Electrolyte for Solid Oxide Fuel Cells

et al. 2020

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The paper presents the results of an investigation into thin single- and triple-layer ZrO2-Sc2O3-based electrolytes prepared using the tape-casting technique in combination with promising electrodes based on La2NiO4+δ and Ni-Ce0.8Sm0.2O2-δ materials. It is shown that pressing and joint sintering of single electrolyte layers allows multilayer structures to be obtained that are free of defects at the layer interface. Electrical conductivity measurements of a triple-layer electrolyte carried out in longitudinal and transverse directions with both direct and alternating current showed resistance of the interface between the layers on the total resistance of the electrolyte to be minimal. Long-term tests have shown that the greatest degradation in resistance over time occurs in the case of an electrolyte with a tetragonal structure. Symmetrical electrochemical cells with electrodes fabricated using a screen-printing method were examined by means of electrochemical impedance spectroscopy. The polarization resistance of the electrodes was 0.45 and 0.16 Ohm∙cm2 at 800 °C for the fuel and oxygen electrodes, respectively. The distribution of relaxation times method was applied for impedance data analysis. During tests of a single solid oxide fuel cell comprising a supporting triple-layer electrolyte having a thickness of 300 microns, a power density of about 160 mW/cm2 at 850 °C was obtained using wet hydrogen as fuel and air as an oxidizing gas.

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Enhanced electrochemical performance of metal-supported solid oxide fuel cells via an inner coating of Gd0.1Ce0.9O2-δ nanosol in the porous NiFe-metal support

Cited by 17 publications

References 22 publications

A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

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

Application of Promising Electrode Materials in Contact with a Thin-Layer ZrO2-Based Supporting Electrolyte for Solid Oxide Fuel Cells

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