The Electrical Double Layer Around a Spherical Colloid Particle

1961 ◽  
Vol 15 (76) ◽  
pp. 425 ◽  
Author(s):  
Lloyd D. Fosdick ◽  
A. L. Loeb ◽  
J. Th. G. Overbeek ◽  
P. H. Wiersema
Keyword(s):  
Double Layer ◽  
Electrical Double Layer ◽  
Colloid Particle

The Electrical Double Layer Around a Spherical Colloid Particle

1961 ◽  
Vol 108 (12) ◽  
pp. 269C ◽  
Author(s):  
A. L. Loeb ◽  
J. Th. G. Overbeek ◽  
P. H. Wiersema ◽  
C. V. King
Keyword(s):  
Double Layer ◽  
Electrical Double Layer ◽  
Colloid Particle

A Network Model of the Electrical Double Layer around a Colloid Particle

1996 ◽  
Vol 183 (1) ◽  
pp. 124-130 ◽  
Author(s):  
J.J. López-Garcı́a ◽  
A.A. Moya ◽  
J. Horno ◽  
A. Delgado ◽  
F. González-Caballero
Keyword(s):  
Double Layer ◽  
Network Model ◽  
Electrical Double Layer ◽  
Colloid Particle

A functional theoretical approach to the electrical double layer of a spherical colloid particle

2001 ◽  
Vol 274 (1) ◽  
pp. 57-69 ◽  
Author(s):  
Zheng-Wu Wang ◽  
Xi-Zhang Yi ◽  
Gan-Zuo Li ◽  
Da-Ren Guan ◽  
An-Jing Lou
Keyword(s):  
Double Layer ◽  
Theoretical Approach ◽  
Electrical Double Layer ◽  
Colloid Particle

Modeling the Electrical Double Layer to Understand the Reaction Environment in a CO2 Electrocatalytic System

2019 ◽  
Author(s):  
Divya Bohra ◽  
Jehanzeb Chaudhry ◽  
Thomas Burdyny ◽  
Evgeny Pidko ◽  
wilson smith
Keyword(s):  
Electric Field ◽  
Double Layer ◽  
Electrical Double Layer ◽  
Surface Reaction ◽  
Catalyst Surface ◽  
Local Reaction ◽  
Reaction Diffusion ◽  
Alkali Metal Cations ◽  
Applied Potential ◽  
Critical Aspect

<p>The environment of a CO<sub>2</sub> electroreduction (CO<sub>2</sub>ER) catalyst is intimately coupled with the surface reaction energetics and is therefore a critical aspect of the overall system performance. The immediate reaction environment of the electrocatalyst constitutes the electrical double layer (EDL) which extends a few nanometers into the electrolyte and screens the surface charge density. In this study, we resolve the species concentrations and potential profiles in the EDL of a CO<sub>2</sub>ER system by self-consistently solving the migration, diffusion and reaction phenomena using the generalized modified Poisson-Nernst-Planck (GMPNP) equations which include the effect of volume exclusion due to the solvated size of solution species. We demonstrate that the concentration of solvated cations builds at the outer Helmholtz plane (OHP) with increasing applied potential until the steric limit is reached. The formation of the EDL is expected to have important consequences for the transport of the CO<sub>2</sub> molecule to the catalyst surface. The electric field in the EDL diminishes the pH in the first 5 nm from the OHP, with an accumulation of protons and a concomitant depletion of hydroxide ions. This is a considerable departure from the results obtained using reaction-diffusion models where migration is ignored. Finally, we use the GMPNP model to compare the nature of the EDL for different alkali metal cations to show the effect of solvated size and polarization of water on the resultant electric field. Our results establish the significance of the EDL and electrostatic forces in defining the local reaction environment of CO<sub>2</sub> electrocatalysts.</p>

Electrical Double Layer Formation on Glassy Carbon in Aqueous Solution

2021 ◽  
pp. 138416
Author(s):  
Sofia B. Davey ◽  
Amanda P. Cameron ◽  
Kenneth G. Latham ◽  
Scott W. Donne
Keyword(s):  
Aqueous Solution ◽  
Double Layer ◽  
Glassy Carbon ◽  
Electrical Double Layer ◽  
Layer Formation
Sign in / Sign up

Export Citation Format

Share Document