The model features five species of particles, an electrolyte component consisting of nonreactive ions of valency ±1 with equilibrium concentration 100 mM, solvation size 0.8 nm, and diffusion coefficient 1 μm 2 ms -1 ; CO 2 with equilibrium concentration 25.8 mM, solvation size 0.23 nm, and diffusion coefficient 1.91 μm 2 ms -1 ; HCO 3 -with equilibrium concentration 7.65 mM, solvation size 0.8 nm, and diffusion coefficient 1.185 μm 2 ms -1 ; and H + with equilibrium concentration 10 -7 M, solvation size 0.56 nm, and diffusion coefficient 9.311 μm 2 ms -1 . As we chose to take the simplest possible approach in this initial computational model, we set the concentration of H + to 10 -6 M to match the pH of 6 in the reaction of Equation . However, H + is also charged and therefore interacts with the charged electrodes. Within Poisson-Boltzmann theory, in a dilute regime with fully developed double layers, this would actually mean [HCO 3 -][H + ] is a constant within the electric double layers since both ions ∝ Exp(±𝑒𝑉/𝑘 𝐵 𝑇).