Electrochemical synthesis and characterization of Gadolinia-Doped Ceria thin films

Khalipova, O. S.; Lair, Virginie; Ringuedé, Armelle

doi:10.1016/j.electacta.2013.11.022

Cited by 14 publications

(6 citation statements)

References 34 publications

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“…The electrodeposition was performed using a classical three-electrode configuration system 48,49 . Fluorine-doped tin oxide on glass (FTO; Wuhan Geao Scientific Education Instrument, China; 2.0 cm × 1.5 cm) with a film resistivity of ~18 Ω, platinum (Basi Inc., Indiana, USA, coil L = 23 cm, wire D = 0.5 mm), and Ag/AgCl (Basi Inc., West Lafayette, IN, USA) were used as the working, counter and reference electrodes, respectively.…”

Section: Methodsmentioning

confidence: 99%

Proton-assisted creation of controllable volumetric oxygen vacancies in ultrathin CeO2−x for pseudocapacitive energy storage applications

et al. 2019

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Two-dimensional metal oxide pseudocapacitors are promising candidates for size-sensitive applications. However, they exhibit limited energy densities and inferior power densities. Here, we present an electrodeposition technique by which ultrathin CeO 2− x films with controllable volumetric oxygen vacancy concentrations can be produced. This technique offers a layer-by-layer fabrication route for ultrathin CeO 2− x films that render Ce 3+ concentrations as high as ~60 at% and a volumetric capacitance of 1873 F cm −3 , which is among the highest reported to the best of our knowledge. This exceptional behaviour originates from both volumetric oxygen vacancies, which enhance electron conduction, and intercrystallite water, which promotes proton conduction. Consequently, simultaneous charging on the surface and in the bulk occur, leading to the observation of redox pseudocapacitive behaviour in CeO 2− x . Thermodynamic investigations reveal that the energy required for oxygen vacancy formation can be reduced significantly by proton-assisted reactions. This cyclic deposition technique represents an efficient method to fabricate metal oxides of precisely controlled defect concentrations and thicknesses.

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Section: Methodsmentioning

confidence: 99%

Proton-assisted creation of controllable volumetric oxygen vacancies in ultrathin CeO2−x for pseudocapacitive energy storage applications

et al. 2019

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“…The crystal quality of the films, however, was depressed by increases in Sm-doping atoms, e.g., for 50 at% [ 119 ]. The same group represented one-step cathodic electrodeposition (from the common solution bath) of Gd-doped ceria films [ 121 ]. CeO 2 , Gd 2 O 3 and Ce 0.77 Gd 0.23 O 2−δ (GDC) thin films were deposited at room temperature applying a fixed potential value of −0.8 V vs. SCE potential.…”

Section: Formation Of Films Based On Cerium Dioxide By Electrodepositionmentioning

confidence: 99%

“… SEM images of the surface as-prepared films deposited potentiostatically at E = −0.8 V/SCE potential at 30 °C on stainless steel substrates: ( a ) SDC0; ( b ) SDC02; ( c ) SDC30; ( d ) CeO 2 ; ( e ) Gd 2 O 3 ; ( f ) GDC23 [ 120 , 121 ]. …”

Section: Figurementioning

confidence: 99%

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Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

Калинина

Pikalova

2021

Materials

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Electrolytic deposition (ELD) and electrophoretic deposition (EPD) are relevant methods for creating functional layers of solid oxide fuel cells (SOFCs). This review discusses challenges, new findings and prospects for the implementation of these methods, with the main emphasis placed on the use of the ELD method. Topical issues concerning the formation of highly active SOFC electrodes using ELD, namely, the electrochemical introduction of metal cations into a porous electrode backbone, the formation of composite electrodes, and the electrochemical synthesis of perovskite-like electrode materials are considered. The review presents examples of the ELD formation of the composite electrodes based on porous platinum and silver, which retain high catalytic activity when used in the low-temperature range (400–650 °C). The features of the ELD/EPD co-deposition in the creation of nanostructured electrode layers comprising metal cations, ceramic nanoparticles, and carbon nanotubes, and the use of EPD to create oriented structures are also discussed. A separate subsection is devoted to the electrodeposition of CeO2-based film structures for barrier, protective and catalytic layers using cathodic and anodic ELD, as well as to the main research directions associated with the deposition of the SOFC electrolyte layers using the EPD method.

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“…32,33 One of the most effective approaches to tailor the OSC was found to be doping the CeO 2 nanoparticles with other metallic elements such as Zr, Ti, Cu, Mn, Fe, and Cr. [33][34][35][36][37] Recently, our group reported that the incorporation of secondary metal ions (Zr 4+ , Cu 2+ , and Ti 4+ ) into the CeO 2 lattice improved the OSC significantly compared to pristine counterpart. 33 This was attributed to enlarged physical surface area, increased oxygen defects in the structure, and weakened metaloxygen binding energy which enable easier oxygen release from the structure.…”

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confidence: 99%

CeO₂-ZrO₂Nanoparticle-Modified Enzymatic Lactate Biosensors with Reduced Oxygen Susceptibility

Uzunoğlu

2018

J. Electrochem. Soc.

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In the present work, the development of novel CeO 2 -ZrO 2 nanoparticle-modified sensing platforms was described to address the oxygen dependency of lactate oxidase enzyme-based electrochemical lactate biosensors. Using engineered electrode modification, it was aimed to construct enzymatic lactate sensors capable of working in O 2 -depleted environments. In this regard, CeO 2 -ZrO 2 nanoparticles were chosen as electrode modifiers due to their high oxygen release and uptake properties. The nanoparticles were prepared using a facile chemical synthesis method and characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy, and N 2 adsorption methods. The XRD and TEM results confirmed the successful synthesis of CeO 2 -ZrO 2 nanoparticles and a physical surface area of 76.1 m 2 g −1 was measured by BET method. The electrochemical performance results demonstrated that CeO 2 -ZrO 2 nanoparticle-modified biosensors showed high sensitivities regardless of the subjected environments. In contrast to conventional enzymatic lactate biosensors, novel sensor design experienced only a slight drop in the response in O 2 -depleted solutions, confirming that the O 2 -susceptibility of the lactate biosensors was diminished significantly. The novel biosensor design showed a high sensitivity of 138.9 ± 1.2 μA. mM −1 . cm −2 with the linear range of 2.5 μM-0.6 mM.

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Electrochemical synthesis and characterization of Gadolinia-Doped Ceria thin films

Cited by 14 publications

References 34 publications

Proton-assisted creation of controllable volumetric oxygen vacancies in ultrathin CeO2−x for pseudocapacitive energy storage applications

Proton-assisted creation of controllable volumetric oxygen vacancies in ultrathin CeO2−x for pseudocapacitive energy storage applications

Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

CeO₂-ZrO₂Nanoparticle-Modified Enzymatic Lactate Biosensors with Reduced Oxygen Susceptibility

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Electrochemical synthesis and characterization of Gadolinia-Doped Ceria thin films

Cited by 14 publications

References 34 publications

Proton-assisted creation of controllable volumetric oxygen vacancies in ultrathin CeO2−x for pseudocapacitive energy storage applications

Proton-assisted creation of controllable volumetric oxygen vacancies in ultrathin CeO2−x for pseudocapacitive energy storage applications

Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

CeO2-ZrO2Nanoparticle-Modified Enzymatic Lactate Biosensors with Reduced Oxygen Susceptibility

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CeO₂-ZrO₂Nanoparticle-Modified Enzymatic Lactate Biosensors with Reduced Oxygen Susceptibility