Fabrication and characterization of a YSZ/YDC composite electrolyte by a sol–gel coating method

Kim, Seung‐Goo; Yoon, Sung Pil; Nam, Suk Woo; Hyun, Seungjoon; Hong, Seong Ahn

doi:10.1016/s0378-7753(02)00270-7

Cited by 118 publications

(60 citation statements)

References 10 publications

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“…Some groups focused their research on techniques to fabricate bilayer electrolyte structure, including wet ceramic co-sintering process [8], electrophoretic deposition [9], sol-gel coating [18], screen printing [19], pulsed laser deposition [20] and dip coating [21], and so on. Sputtering is a good method without the formation of YSZ-DPC solid solution for preparation of the YSZ/DPC bilayer for sure.…”

Section: Introductionmentioning

confidence: 99%

Preparation and performance of solid oxide fuel cells with YSZ/SDC bilayer electrolyte

Wang

Huang

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Preparation and performance of solid oxide fuel cells with YSZ/SDC bilayer electrolyte

Wang

Huang

et al. 2015

Ceramics International

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“…The electronic conductivity of doped ceria can be suppressed to some extent by adding co-dopants [129,130]. Also, ultra-thin layer of YSZ has been used as an electronic barrier in bilayer thin films to block the electronic conduction [131][132][133]. In addition to gadolinia and samaria, dopants like yttria, calcia, and strontia have been investigated and used in ceria-based systems [134][135][136][137][138].…”

Section: Scandia-stabilized Zirconiamentioning

confidence: 99%

State-of-the-Art Thin Film Electrolytes for Solid Oxide Fuel Cells

Nandasiri

Thevuthasan

2015

Thin Film Structures in Energy Applications

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State-of-the-art solid oxide fuel cells (SOFC) are among the main candidates for clean energy technology due to their high efficiency, fuel flexibility, low air pollution, and minimal greenhouse gas emission. However, high operational temperature of SOFC is a greater challenge in commercialization of these devices for low cost and portable applications. High temperature operation of SOFC degrades its performance with aging, limits the selection of materials for fuel cell components, and increases the fabrication cost. Thus, there have been enormous efforts to improve the properties of existing materials and develop new materials for SOFC components in order to lower the operating temperature of SOFC. Recent advances in thin film technology have also been utilized to develop new materials with improved properties for SOFC. One of the key components in SOFC is the electrolyte and several research groups are working on developing new electrolyte materials. In this chapter, we will discuss the recent advances in thin film SOFC electrolytes. This extensive discussion includes the evolution of doped ceria, doped zirconia, and multilayer hetero-structured thin film electrolytes. The newly developed nanoscale thin films and multilayer hetero-structures with improved oxygen ionic conductivity will have significant impact on SOFC devices. Introduction Background of Solid Oxide Fuel Cells (SOFC)The latest U.S. energy reviews revealed that more than 80 % of the energy consumed in the world is still produced by non-renewable energy sources such as petroleum, natural gas, and coal [1]. Moreover, it is projected that world energy consumption will grow by 56 % from 2010 to 2040. Therefore, from a long-term energy perspective, clean energy technologies are needed to utilize primary energy

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“…Sol-gel process was also used for preparing an electronic blocking layer, such as thin YSZ layer, on doped ceria electrolyte to enhance the OCV [65][66][67]. Kim et al [67] successfully fabricated 2 lm thick YSZ layer on YDC electrolyte surface using a sol-gel spin coating method.…”

Section: Electrolytementioning

confidence: 99%

“…Kim et al [67] successfully fabricated 2 lm thick YSZ layer on YDC electrolyte surface using a sol-gel spin coating method. The open circuit voltage (OCV) of a single cell based on this composite electrolyte was *0.5 V higher than that for an uncoated YDC electrolyte at temperatures from 700 to 1,050°C.…”

Section: Electrolytementioning

confidence: 99%

Solid Oxide Fuel Cells

Zuo

Liu

2012

Sol-Gel Processing for Conventional and Alternative Energy

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Solid oxide fuel cells (SOFCs) have potential to be the most efficient and cost-effective system for direct conversion of a wide variety of fuels to electricity. The performance and durability of SOFCs depend strongly on the microstructure and morphology of cell components. As a unique synthesis and processing technique with easy control of composition, structure, morphology, and microstructure, sol-gel processes have been widely used for fabrication of key SOFC materials or critical components with desired properties or functionalities unattainable otherwise. In this chapter, we provide an overview on sol-gel processes applied for preparation of homogeneous and fine powders of electrolyte, electrode, and ceramic interconnect materials, for deposition of dense electrolyte membranes or porous electrode films, and for modification of electrode or metallic interconnect surface or interface to enhance catalytic activity, to improve tolerance to coking or contaminant poisoning, and to increase stability against oxidation, reduction, or other degradation mechanisms. While significant progress has been made in controlling and tailoring the composition, microstructure, morphology, and hence functionality of materials and components, many challenges still remain to make sol-gel processes cost-effective and versatile for many applications. The development of novel sol-gel processes as well as the exploration of the existing ones to new applications continues to be an intriguing research pursuit.

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Fabrication and characterization of a YSZ/YDC composite electrolyte by a sol–gel coating method

Cited by 118 publications

References 10 publications

Preparation and performance of solid oxide fuel cells with YSZ/SDC bilayer electrolyte

Preparation and performance of solid oxide fuel cells with YSZ/SDC bilayer electrolyte

State-of-the-Art Thin Film Electrolytes for Solid Oxide Fuel Cells

Solid Oxide Fuel Cells

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