Examples

Here is a brief overview of the examples in echemfem/examples.

• Planar flow reactor with electroneutral Nernst-Planck. A Butler-Volmer expression is used for the redox reaction, and there are no homogeneous bulk reactions. A custom mesh is used with refinements close to the electrodes.

  • 2D case for binary electrolyte (\(\ce{CuSO4}\))

  • Nondimensional version of binary case

  • 2D case for three-ion electrolyte (\(\ce{CuSO4}\) and \(\ce{H2SO4}\))

  • Nondimensional version of three ion case

  • 3D version of the three-ion case using custom preconditioners for a Discontinuous Galerkin (DG) scheme, and nondimensional

• Simple 1D reaction-diffusion system for \(\ce{CO2}\) electrolysis in \(\ce{KHCO3}\)

  • Simplified bicarbonate bulk reactions

  • Full bicarbonate bulk reactions

  • Different implementation of the full bicarbonate bulk reactions (using the homog_params interface)

• 2D flow-past the electrode with advection-diffusion

  • Two species toy model with shear flow

  • CO2 electrolysis in bicarbonate with linear charge-transfer kinetics and shear flow

  • Two species toy model with irregular electrode with Navier-Stokes for the flow

• 1D model for the \(\ce{CO2}\) electrolysis in a copper catalyst layer of a gas diffusion electrode (GDE). The model uses electroneutral Nernst-Planck in a porous medium.

  • Using substitution of the electroneutrality equation to eliminate a species

  • Solving the electroneutrality equation explicitly

• A simple Vanadium flow battery using advection-diffusion-reaction, Poisson for the ionic potential with a predefinied conductivity and Navier-Stokes-Brinkman for the flow

• A symmetric cylindrical pore model for CO2 electrolysis using electroneutral Nernst-Planck and simplified bicarbonate bulk reactions

• A tandem flow-past the electrode system with an Ag catalyst placed in front of a Cu catalyst with electroneutral Nernst-Planck and Tafel kinetics

• Simple example for the BMCSL model for finite size ion effects