Effect of electrode pore geometry modeled using Nernst-Planck-Poisson-modified Stern layer model Academic Article

abstract

• A planar electrode containing cylindrical pores with semi-circular ends is modeled using a finite element implementation of the transient nonlinear 2D Nernst- Planck-Poisson-modified Stern (NPPMS) model. The model uses a modified Stern layer to account for finite ion size. The study includes the effects of pore radius and depth on the predicted electric potential, ion concentration, surface charge density, surface energy density, and charging time. The ion concentration and electric potential are found to be sensitive to the change in radii of the pore and insensitive to the pore depth. The surface charge density is slightly higher within the pore than along the vertical flat regions of the electrode. The increase in surface area due to porosity increases the charging time. 2008 Springer-Verlag.

authors

• Boyd, James
• Whitcomb, John

published proceedings

• COMPUTATIONAL MECHANICS

author list (cited authors)

• Lim, J., Whitcomb, J. D., Boyd, J. G., & Varghese, J.

citation count

• 14

publication date

• March 2009

publisher

• Springer Nature  Publisher

keywords

• Electric Double Layer
• Finite Element Analysis
• Modified Stern Layer
• Nernst-planck-poisson
• Porous Electrode

Digital Object Identifier (DOI)

• 10.1007/s00466-008-0322-y

start page

• 461

end page

• 475

volume

• 43

issue

• 4

URL

• http://dx.doi.org/10.1007/s00466-008-0322-y

user-defined tag

• 7 Affordable and Clean Energy