Atomic layer deposition of yttria-stabilized zirconia thin films for enhanced reactivity and stability of solid oxide fuel cells

Park, Joonho; Lee, Yeageun; Chang, Ikwhang; Cho, Gu Young; Ji, Sanghoon; Lee, Won Young; Won, Suk

doi:10.1016/j.energy.2016.09.094

Cited by 42 publications

(15 citation statements)

References 32 publications

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“…For example, Bagchi et al 89 successfully modified the sol-gel method in fabricating the YSZ powder with homogenous 8 mol% dispersion of yttria nano-crystalline. Park et al 92 further discussed the benefits of the ALD method in fabricating the YSZ electrolyte. The properties of YSZ powder attained are having spherical morphology, reasonably high surface area, perfect crystallized (10-15 nm in crystal size) after going through the calcination process perhaps to form the dense YSZ electrolyte structure without any agglomerated problem.…”

Section: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

“…This implemented method succeeded to produce YSZ electrolyte with higher conductivity compared to other methods because of the controlled parameter of the ratio of yttria inside the zirconia was optimum. Park et al 92 further discussed the benefits of the ALD method in fabricating the YSZ electrolyte. The anodic aluminum oxide (AAO)-based thin-film accomplished the improvement in reactivity and stability result, which attributed to the YSZ electrolyte, which fabricated through the ALD method.…”

Section: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

“…All the samples were heated from ambient temperature up to 800°C for 10 hours and performed in real operation of SOFCs for 10 hours with 10 times rapidly tests. Park et al 92 modified the YSZ electrolyte with atomic layer deposition (ALD) to enhance reactivity and thermal stability. The anodic aluminum oxide with different deposition was deposited on YSZ electrolyte by sputtering method at 450°C.…”

Section: Thermal Analysismentioning

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: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

Section: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

Section: Thermal Analysismentioning

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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“…When the ALD layers are used as cathodic interlayers, a few times enhancement in the exchange current density and activation resistance is clearly observed, and accordingly, the MPD increased by a factor of 1.6), (3 in previous reports [13,15,16,[47][48][49].…”

Section: Quantitative Comparison In Performance Enhancementmentioning

confidence: 66%

“…ALD-processed interlayers have been applied to thin film SOFCs with thin film oxide electrolytes; for example, Park et al applied the ALD YSZ cathodic interlayer for AAO-based thin film SOFC [47], and observed improved cathodic reactivity as compared to a sputtered YSZ surface by applying nano-granular ALD YSZ films to the electrolyte and cathode electrode interfaces of AAO-based thin film SOFCs, which corroborated well with the previous results by Chao et al and Park et al [13,45,46].…”

Section: Cathodic Interlayersmentioning

confidence: 99%

Review on process-microstructure-performance relationship in ALD-engineered SOFCs

Shin

Kye

et al. 2019

J. Phys. Energy

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Solid oxide fuel cells (SOFCs) are promising candidates for next-generation energy conversion devices, and much effort has been made to lower their operating temperature for wider applicability. Recently, atomic layer deposition (ALD), a novel variant of chemical vapor deposition, has demonstrated interesting research opportunities for SOFCs due to its unique features such as conformality and precise thickness/doping controllability. Individual components of SOFCs, namely the electrolyte, electrolyte-electrode interface, and electrode, can be effectively engineered by ALD nanostructures to yield higher performance and better stability. While the particulate or porous structures may benefit the electrode performance by maximizing the surface area, the dense film effectively blocks the chemical or physical shorting even at nanoscale thickness when applied to the electrolyte, which helps to increase the performance at low operating temperature. In this article, recent examples of the application of ALD-processed nanostructures to SOFCs are reviewed, and the quantitative relationship between ALD process, ALD nanostructure and the performance and stability of SOFCs is elucidated. Abbreviations

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Operating Cost Savings in the Atomic Layer Deposition Process of Ultrathin Electrolyte for Solid Oxide Fuel Cells by Applying Oxygen Plasma

Kim²,

Won

2022

Int. J. Precis. Eng. Manuf.

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Atomic layer deposition of yttria-stabilized zirconia thin films for enhanced reactivity and stability of solid oxide fuel cells

Cited by 42 publications

References 32 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

Review on process-microstructure-performance relationship in ALD-engineered SOFCs

Operating Cost Savings in the Atomic Layer Deposition Process of Ultrathin Electrolyte for Solid Oxide Fuel Cells by Applying Oxygen Plasma

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