Electrostatic Spray Deposition of Doped Ceria Films

Huang, J. B.; Chang, Chi-Wei; Hsu, Ching-Shiung; Hwang, Bing-Hwai

doi:10.1002/fuce.201000015

Cited by 5 publications

(3 citation statements)

References 24 publications

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“…These include physicalvapour-deposition techniques, such as magnetron sputtering 11,12 and pulsed laser deposition, 13 and a variety of liquid-precursorbased methods, including spin coating 14 and electrostatic-spray deposition. 15,16 Flame-spray deposition is a wet chemical route which has received particular attention of late in relation to the deposition of CGO electrolytes for m-SOFCs. 17,18 There are large discrepancies in reported electrical-transport results for CGO and YSZ thin lms.…”

Section: Introductionmentioning

confidence: 99%

Electrical properties of nanometric CGO-thin films prepared by electron-beam physical vapour deposition

et al. 2014

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Thin-film oxide-ion-conducting electrolytes are of considerable interest for the development of microsolid oxide fuel cells (m-SOFCs). In this study, nanocrystalline CGO thin films (with thickness ranging from 0.3 to 1.35 mm) were deposited from a Ce 0.9 Gd 0.1 O 2Àd target by electron-beam physical vapour deposition onto a selection of substrates (Si, glass, fused silica and Al 2 O 3 ) which were either maintained at room temperature or at 700 C during deposition. Films have a columnar microstructure with (111) texture in the surface plane. The crystallinity of the films deposited at a substrate temperature of 700 C was found to be much superior to those deposited at RT and subsequently heated. Impedance spectroscopy revealed that the in-plane resistivity of the films in air at 900 C is greater than that of bulk CGO by around two orders of magnitude, with this difference increasing with decreasing temperature.The poor electrical properties of the nanocrystalline films may be considerably affected by the expected higher concentration of strains in comparison with the micrometric sample. The composition of the thin films was also affected by a de-doping process. The in-plane charge transport in films is limited by grain boundaries, mainly due to both a greater grain-boundary volume and higher specific grain-boundary resistivity. Conductivity measurements as a function of oxygen partial pressure reveal a considerably narrower electrolytic domain for the thin films than that of bulk CGO.

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Section: Introductionmentioning

confidence: 99%

Electrical properties of nanometric CGO-thin films prepared by electron-beam physical vapour deposition

et al. 2014

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“…A schematic diagram of current ESD system can be found elsewhere [23]. In brief, stochiometric amounts of Sm(NO 3 ) 3 · 6H 2 O, Sr(NO 3 ) 2 , Co(NO 3 ) 2 · 6H 2 O were dissolved to a mixture solvent of 2-(2-Butoxyethoxy)-ethanol to obtain a precursor solution with a total concentration of 0.4 M for all metal ions.…”

Section: Preparation Of Ssc Cathodes By Electrostatic Assisted Spray mentioning

confidence: 99%

Preparation of BaZr_0.1Ce_0.7Y_0.2O_3–δ Based Solid Oxide Fuel Cells with Anode Functional Layers by Tape Casting

Nien

Hsu²,

Chang

et al. 2011

Fuel Cells

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Solid oxide fuel cells (SOFCs) based on the proton conducting BaZr0.1Ce0.7Y0.2O3–δ (BZCY) electrolyte were prepared and tested in 500–700 °C using humidified H2 as fuel (100 cm3 min–1 with 3% H2O) and dry O2 (50 cm3 min–1) as oxidant. Thin NiO‐BZCY anode functional layers (AFL) with 0, 5, 10 and 15 wt.% carbon pore former were inserted between the NiO‐BZCY anode and BZCY electrolyte to enhance the cell performance. The anode/AFL/BZCY half cells were prepared by tape casting and co‐sintering (1,300 °C/8 h), while the Sm0.5Sr0.5CoO3–δ (SSC) cathodes were prepared by thermal spray deposition. Well adhered planar SOFCs were obtained and the test results indicated that the SOFC with an AFL containing 10 wt.% pore former content showed the best performance: area specific resistance as low as 0.39 Ω cm2 and peak power density as high as 0.863 W cm–2 were obtained at 700 °C. High open circuit voltages ranging from 1.00 to 1.12 V in 700–500 °C also indicated negligible leakage of fuel gas through the electrolyte.

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“…Dense/10-15 -Yattra stabilized zirconia [74] Ethanol Yattra stabilized zirconia Yattria stabilized zirconia [195] Isopropyl alcohol, toluene, polyvinyl butyral Yattra stabilized zirconia Scandium stabilized Zirconia [124] Ethanol, butyl carbitol Samrium doped ceria [125] Butyl carbitol ethanol [197] Butyl Table 6. Continued.…”

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confidence: 99%

Electrostatically Sprayed Nanostructured Electrodes for Energy Conversion and Storage Devices

Joshi

Samuel

Kim

et al. 2021

Adv Funct Materials

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The electrostatic spray method is a promising nonvacuum technique for efficient deposition of thin films from solutions or dispersions. The multitude of electrostatic spray process parameters, including surface tension, viscosity, and conductivity of the liquid, applied voltage, nozzle size, and flow rate, make electrostatic spray deposition very versatile for the morphological engineering of nanostructured films. The current state-of-the-art in electrostatic spraying can produce exceptional morphologies. Such tailoring of morphologies is notably useful in electrochemical applications where high electrolyte-accessible surface area often improves performance. Interesting morphologies of metal oxides and their composites are highlighted, including nanopillars, nanoferns, and porous microspheres produced by electrostatic spraying to enhance energy conversion and storage performance. The physics associated with the electrostatic spray process and morphology control using it are also presented. The manuscript highlights the potential of electrospray processing for producing thin films of controlled microstructure, from ultrasmooth layers in organic photovoltaics and perovskite photovoltaics to hierarchical nanostructured films for anodes and photoanodes. It aims to help researchers appreciate essential aspects of electrostatic spray deposition efficiency, process control, and morphology engineering for energy conversion (e.g., solar cell, fuel cell, and photoelectrochemical cell) and energy storage (e.g., lithium-ion battery and supercapacitor) electrodes.

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Electrostatic Spray Deposition of Doped Ceria Films

Cited by 5 publications

References 24 publications

Electrical properties of nanometric CGO-thin films prepared by electron-beam physical vapour deposition

Electrical properties of nanometric CGO-thin films prepared by electron-beam physical vapour deposition

Preparation of BaZr_0.1Ce_0.7Y_0.2O_3–δ Based Solid Oxide Fuel Cells with Anode Functional Layers by Tape Casting

Electrostatically Sprayed Nanostructured Electrodes for Energy Conversion and Storage Devices

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Electrostatic Spray Deposition of Doped Ceria Films

Cited by 5 publications

References 24 publications

Electrical properties of nanometric CGO-thin films prepared by electron-beam physical vapour deposition

Electrical properties of nanometric CGO-thin films prepared by electron-beam physical vapour deposition

Preparation of BaZr0.1Ce0.7Y0.2O3–δ Based Solid Oxide Fuel Cells with Anode Functional Layers by Tape Casting

Electrostatically Sprayed Nanostructured Electrodes for Energy Conversion and Storage Devices

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Preparation of BaZr_0.1Ce_0.7Y_0.2O_3–δ Based Solid Oxide Fuel Cells with Anode Functional Layers by Tape Casting