Double layer capacitance of anode/solid-electrolyte interfaces

Ge, Xiaoming; Fu, Chuankai; Chan, Siew Hwa

doi:10.1039/c1cp20508k

Cited by 24 publications

(14 citation statements)

References 73 publications

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“…4c), or 10 -6 to 10 -5 F/cm 2 . These capacitance values fall within the range of the double-layer capacitances [29], and are similar to the interfacial polarization capacitances reported for a Pt/YSZ interface (10 -6 to 10 -5 F/cm 2 ) [25].…”

Section: Dependence Of the Electrochemical Behavior On Oxygen Partialsupporting

confidence: 84%

Optimizing cathode materials for intermediate-temperature solid oxide fuel cells (SOFCs): Oxygen reduction on nanostructured lanthanum nickelate oxides

Carneiro

Brocca

Lucena

et al. 2017

Applied Catalysis B: Environmental

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Kinetics of high temperature oxygen reduction reaction (ORR) on La 2 NiO 4+δ (LNO) nanostructures are investigated by means of electrochemical impedance spectroscopy, with the aim of determining (i) the critical steps that govern ORR in these catalysts, and (ii) ways to lower the overpotential losses associated with these steps. We have identified two main electrochemical processes that govern the polarization resistances during ORR: the electron transfer/oxygen vacancy healing), and the oxygen ion transfer through the electrocatalyst/electrolyte interface (. We find that the nanostructure of LNO significantly effects the activation barriers associated with these processes with nanorodstructured LNO catalyst, highly terminated by [001] surface facets, exhibiting lower barriers compared to traditional, spherical-shaped catalysts. We also show that incorporation of the nanorod-structured LNO as cathode electrocatalysts in SOFCs leads to a significant improvement in the cell performance. These findings provide important insights on the electrochemical steps that govern ORR kinetics on LNO electrocatalyst, and ways to optimize these materials as cathode electrocatalysts for intermediate temperature SOFCs (IT-SOFCs).

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Section: Dependence Of the Electrochemical Behavior On Oxygen Partialsupporting

confidence: 84%

Optimizing cathode materials for intermediate-temperature solid oxide fuel cells (SOFCs): Oxygen reduction on nanostructured lanthanum nickelate oxides

Carneiro

Brocca

Lucena

et al. 2017

Applied Catalysis B: Environmental

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“…One such typical cyclic voltammogram is shown in Fig. 8 mimicking a double M a n u s c r i p t 11 layer capacitance associated with the electrode/electrolyte interface [32][33]. An all solid-state capacitor using polymer electrolyte mimics to have a capacitance behavior (in Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Solid Polymer Electrolyte based on Activated Carbon for Solid State Capacitor

Verma

Minakshi

Singh³

2014

Electrochimica Acta

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Verma, M.L., Minakshi, M. and Singh, N.K. (2014)SynthesisThis is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…For the simulation we used fitted parameters according to Table 3. The experimentally observed capacitances of the solid interface (see also [23] and [24]) are higher than for a metal electrode in aqueous solution. This is consistent with the absence of solvation shell formation in YSZ solid electrolyte.…”

Section: Double Layer Capacitance Of Blocking Electrodementioning

confidence: 88%

A continuum model for yttria-stabilized zirconia incorporating triple phase boundary, lattice structure and immobile oxide ions

Vágner

Guhlke

Miloš

et al. 2019

J Solid State Electrochem

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A continuum model for yttria-stabilized zirconia (YSZ) in the framework of non-equilibrium thermodynamics is developed. Particular attention is given to (i) modeling of the YSZ-metal-gas triple phase boundary, (ii) incorporation of the lattice structure and immobile oxide ions within the free energy model and (iii) surface reactions. A finite volume discretization method based on modified Scharfetter-Gummel fluxes is derived in order to perform numerical simulations. The model is used to study the impact of yttria and immobile oxide ions on the structure of the charged boundary layer and the double layer capacitance. Cyclic voltammograms of an air-half cell are simulated to study the effect of parameter variations on surface reactions, adsorption and anion diffusion.

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Double layer capacitance of anode/solid-electrolyte interfaces

Cited by 24 publications

References 73 publications

Optimizing cathode materials for intermediate-temperature solid oxide fuel cells (SOFCs): Oxygen reduction on nanostructured lanthanum nickelate oxides

Optimizing cathode materials for intermediate-temperature solid oxide fuel cells (SOFCs): Oxygen reduction on nanostructured lanthanum nickelate oxides

Synthesis and Characterization of Solid Polymer Electrolyte based on Activated Carbon for Solid State Capacitor

A continuum model for yttria-stabilized zirconia incorporating triple phase boundary, lattice structure and immobile oxide ions

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