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Title: Exploring chemical speciation at electrified interfaces using detailed continuum models

Journal Article · · Journal of Chemical Physics
DOI: https://doi.org/10.1063/1.5058159 · OSTI ID:1543894

We present a local free-energy functional-based generic continuum model for material interfaces with a specific emphasis on electrified solid/liquid interfaces. The model enables a description of multicomponent phases at interfaces and includes the effects of specific non-electrostatic interactions (specific adsorption), ion size disparity, and the explicit presence of neutral species. In addition to the optimization of electrostatic, non-electrostatic, and steric forces, the model can be easily modified to explore the effects of other channels for equilibration, including local chemical transformations driven by equilibrium constants and electrochemical reactions driven by the electrode potential. In this way, we show that, upon accounting for these effects, local speciation in the vicinity of the interface can be drastically different from what is expected from restricted models and minor species (from the bulk perspective) may become dominant due to the effects of local pH. We evaluate the ionic contribution to the surface tension at the interface and show how this could impact the structure of air/liquid interfaces. On the same footing, an attempt to describe electrochemical metal dissolution is made. The model allows estimates of the mutual population of newly produced ions depending on their charge and size and could be useful for interpretation of electrochemical and spectroscopic measurements if the dissolution involves different metal ions (species). With these advances, the proposed model may be used as an ingredient within a hybrid ab initio-continuum methodology to model biased interfaces.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1543894
Journal Information:
Journal of Chemical Physics, Vol. 150, Issue 4; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

References (90)

Single-Ion Solvation Free Energies and the Normal Hydrogen Electrode Potential in Methanol, Acetonitrile, and Dimethyl Sulfoxide journal January 2007
Towards understanding the structure and capacitance of electrical double layer in ionic liquids journal October 2008
Improving accuracy of electrochemical capacitance and solvation energetics in first-principles calculations journal April 2018
The Surface Tension of Solutions of Electrolytes as a Function of the Concentration. I. A Differential Method for Measuring Relative Surface Tension journal January 1937
The influence of image interactions on the structure of water and electrolytes in front of a metal surface journal February 1997
First-principles molecular dynamics simulations in a continuum solvent journal January 2003
Modeling the electrified solid–liquid interface journal November 2008
Nonlocal electrostatic approach to the double layer and adsorption at the electrode-electrolyte interface journal December 1980
How Voltage Drops Are Manifested by Lithium Ion Configurations at Interfaces and in Thin Films on Battery Electrodes journal May 2015
Continuous Self-Energy of Ions at the Dielectric Interface journal April 2014
The adsorption of iodide ion from aqueous KI + KF of constant ionic strength journal February 1966
Electrical double layers. V. Asymmetric ion–wall interactions journal December 1984
A generalized van der Waals model for solvation forces between solute particles in a colloidal suspension journal November 1983
Density functional theory for differential capacitance of planar electric double layers in ionic liquids journal March 2011
Avoiding pitfalls in the modeling of electrochemical interfaces journal January 2013
Electronic structure calculations of liquid-solid interfaces: Combination of density functional theory and modified Poisson-Boltzmann theory journal June 2008
Unravelling the electrochemical double layer by direct probing of the solid/liquid interface journal August 2016
The structure of interfacial water on gold electrodes studied by x-ray absorption spectroscopy journal October 2014
XXXIX. Structure and capacity of electrical double layer journal May 1942
Experimental approach to the anion problem in DFT calculation of the partial charge transfer during adsorption at electrochemical interfaces journal August 2005
Modeling the Electrochemical Hydrogen Oxidation and Evolution Reactions on the Basis of Density Functional Theory Calculations journal October 2010
Influence of cation adsorption on the kinetics of electrode processes journal January 1959
Frontiers in first principles modelling of electrochemical simulations journal August 2018
The structure of water at a planar wall: An integral equation approach with the central force model journal August 1994
Improving Continuum Models to Define Practical Limits for Molecular Models of Electrified Interfaces journal January 2017
Unequal size of ions in modified Wicke-Eigen model of electric double layer journal January 2017
Chemisorbed Molecules under Potential Bias: Detailed Insights from First-Principles Vibrational Spectroscopies journal March 2014
Classical solvent dynamics and electron transfer. 1. Continuum theory journal September 1983
Computational electrochemistry: aqueous one-electron oxidation potentials for substituted anilines journal January 2000
Computational electrochemistry: prediction of liquid-phase reduction potentials journal January 2014
Adsorption of bromide ions on single crystals of gold journal August 1983
Towards first principles modeling of electrochemical electrode–electrolyte interfaces journal January 2015
Grand canonical electronic density-functional theory: Algorithms and applications to electrochemistry journal March 2017
Fundamental measure theory for hard-sphere mixtures: a review journal January 2010
Ionic Components of Charge in the Electrical Double Layer journal March 1954
Electrochemical reduction of an anion for ionic-liquid molecules on a lithium electrode studied by first-principles calculations journal September 2014
A generalized Poisson and Poisson-Boltzmann solver for electrostatic environments journal January 2016
Raumbedarf und Aktivitätskoeffizienten starker Elektrolyte in wäßriger Lösung journal January 1953
Toward First Principles Prediction of Voltage Dependences of Electrolyte/Electrolyte Interfacial Processes in Lithium Ion Batteries journal November 2013
Odyssey of Multivalent Cathode Materials: Open Questions and Future Challenges journal February 2017
Calculation of Solvation Free Energies of Charged Solutes Using Mixed Cluster/Continuum Models journal August 2008
On the effect of dielectric saturation on the swelling of clays journal March 1992
Determination of specific adsorption of some simple anions at a polycrystalline silver-aqueous interface using differential capacitance and kinetic probe techniques journal September 1982
Investigation of Dielectric Decrement and Correlation Effects on Electric Double-Layer Capacitance by Self-Consistent Field Model journal July 2016
The Dielectric Constant of Water and the Saturation Effect journal April 1951
Detecting the undetectable: The role of trace surfactant in the Jones-Ray effect journal November 2018
Density functional theory for inhomogeneous mixtures of polymeric fluids journal August 2002
A model for the electrical double layer combining integral equation techniques with quantum density functional theory journal August 2011
The concept of absolute electrode potential an attempt at a calculation journal May 1974
Are electrostatic potentials between regions of different chemical composition measurable? The Gibbs–Guggenheim principle reconsidered, extended and its consequences revisited journal January 2007
Specific adsorption of bromide and iodide anions from nonaqueous solutions on controlled-surface polycrystalline silver electrodes journal August 2006
Electrochemical Windows of Room-Temperature Ionic Liquids from Molecular Dynamics and Density Functional Theory Calculations journal June 2011
The anatomy of the double layer and capacitance in ionic liquids with anisotropic ions: Electrostriction vs. lattice saturation journal November 2010
First-principles molecular dynamics simulation of biased electrode/solution interface journal November 2007
A simple density functional theory for inhomogeneous liquids: Wetting by gas at a solid-liquid interface journal July 1984
Reactivity at the Lithium–Metal Anode Surface of Lithium–Sulfur Batteries journal November 2015
Double-layer effects on simple electrode reactions journal November 1977
Electrosorption Valency and Partial Charge Transfer in Halide and Sulfide Adsorption on Ag(111) journal November 1998
The electrical double layer. III. Modified Gouy−Chapman theory with unequal ion sizes journal May 1982
Concentration and chemical-state profiles at heterogeneous interfaces with sub-nm accuracy from standing-wave ambient-pressure photoemission journal November 2014
The relation between the capacity of the electrode double layer and the adsorption of surface-active material journal January 1959
The importance of nonlinear fluid response in joint density-functional theory studies of battery systems journal October 2013
Generic density functional for electric double layers in a molecular solvent journal April 1998
The Minimum Entropy Production Principle journal October 1980
On the theoretical description of weakly charged surfaces journal March 2015
Ab Initio Molecular Dynamics for Molecules with Variable Numbers of Electrons journal May 2002
Toward a Unified Picture of the Water Self-Ions at the Air–Water Interface: A Density Functional Theory Perspective journal May 2014
Theoretical modeling of electrode/electrolyte interface from first-principles periodic continuum solvation method journal March 2013
Aqueous Solvation Free Energies of Ions and Ion−Water Clusters Based on an Accurate Value for the Absolute Aqueous Solvation Free Energy of the Proton journal August 2006
Molecular dynamics simulations of solutions at constant chemical potential journal April 2015
Effect of thermal motion on catalytic activity of nanoparticles in polar solvent journal January 2014
Origin of the Overpotential for Oxygen Reduction at a Fuel-Cell Cathode journal November 2004
Function-Space-Based Solution Scheme for the Size-Modified Poisson–Boltzmann Equation in Full-Potential DFT journal July 2016
Towards an understanding of induced-charge electrokinetics at large applied voltages in concentrated solutions journal November 2009
The nature of the liquid-vapour interface and other topics in the statistical mechanics of non-uniform, classical fluids journal April 1979
Calculation of Redox Potentials and p K a Values of Hydrated Transition Metal Cations by a Combined Density Functional and Continuum Dielectric Theory journal January 1996
Double-Layer in Ionic Liquids:  Paradigm Change? journal May 2007
Computer Simulations of Electrochemical Interfaces book February 1999
The concept of absolute electrode potential an attempt at a calculation journal May 1974
Modeling the Electrochemical Hydrogen Oxidation and Evolution Reactions on the Basis of Density Functional Theory Calculations journal November 2010
A generalized Poisson and Poisson-Boltzmann solver for electrostatic environments text January 2016
Non-equilibrium Thermodynamics journal September 1971
Dipolar Poisson-Boltzmann Equation: Ions and Dipoles Close to Charged Surfaces text January 2007
Towards an understanding of induced-charge electrokinetics at large applied voltages in concentrated solutions preprint January 2009
The importance of nonlinear fluid response in joint density-functional theory studies of battery systems text January 2013
Continuous Self Energy of Ions at the Dielectric Interface text January 2013
Molecular Dynamics Simulations of Solutions at Constant Chemical Potential text January 2015
Predicting the Voltage Dependence of Interfacial Electrochemical Processes at Lithium-Intercalated Graphite Edge Planes text January 2015
How Voltage Drops are Manifested by Lithium Ion Configurations at Interfaces and in Thin Films on Battery Electrodes text January 2015
Grand canonical electronic density-functional theory: algorithms and applications to electrochemistry text January 2017

Cited By (1)

Special Topic on Interfacial Electrochemistry and Photo(electro)catalysis journal January 2019

Figures / Tables (11)